From 2113bc7764ea7a0b1a6682ce3275b6f06f036ab3 Mon Sep 17 00:00:00 2001
From: Michael Wetherell <mike.wetherell@ntlworld.com>
Date: Wed, 3 Aug 2005 16:10:12 +0000
Subject: [PATCH] Rebake after MSLU and other changes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@35063 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 Makefile.in                                   |  27 +-
 build/msw/makefile.bcc                        | 285 ++++++++++--------
 build/msw/makefile.gcc                        | 230 +++++++-------
 build/msw/makefile.vc                         | 270 +++++++++--------
 build/msw/makefile.wat                        |  26 +-
 configure                                     |  79 ++++-
 contrib/build/animate/makefile.bcc            |  12 +-
 contrib/build/animate/makefile.gcc            |  12 +-
 contrib/build/animate/makefile.vc             |  12 +-
 contrib/build/animate/makefile.wat            |   2 +-
 contrib/build/deprecated/makefile.bcc         |  16 +-
 contrib/build/deprecated/makefile.gcc         |  16 +-
 contrib/build/deprecated/makefile.vc          |  35 ++-
 contrib/build/deprecated/makefile.wat         |   2 +-
 contrib/build/fl/makefile.bcc                 |  22 +-
 contrib/build/fl/makefile.gcc                 |  22 +-
 contrib/build/fl/makefile.vc                  |  12 +-
 contrib/build/fl/makefile.wat                 |   2 +-
 contrib/build/foldbar/makefile.bcc            |  12 +-
 contrib/build/foldbar/makefile.gcc            |  12 +-
 contrib/build/foldbar/makefile.vc             |  12 +-
 contrib/build/foldbar/makefile.wat            |   2 +-
 contrib/build/gizmos/makefile.bcc             |  18 +-
 contrib/build/gizmos/makefile.gcc             |  18 +-
 contrib/build/gizmos/makefile.vc              |  18 +-
 contrib/build/gizmos/makefile.wat             |   4 +-
 contrib/build/mmedia/makefile.bcc             |  12 +-
 contrib/build/mmedia/makefile.gcc             |  12 +-
 contrib/build/mmedia/makefile.vc              |  12 +-
 contrib/build/mmedia/makefile.wat             |   2 +-
 contrib/build/net/makefile.bcc                |  12 +-
 contrib/build/net/makefile.gcc                |  12 +-
 contrib/build/net/makefile.vc                 |  12 +-
 contrib/build/net/makefile.wat                |   2 +-
 contrib/build/ogl/makefile.bcc                |  12 +-
 contrib/build/ogl/makefile.gcc                |  22 +-
 contrib/build/ogl/makefile.vc                 |  12 +-
 contrib/build/ogl/makefile.wat                |   2 +-
 contrib/build/plot/makefile.bcc               |  12 +-
 contrib/build/plot/makefile.gcc               |  12 +-
 contrib/build/plot/makefile.vc                |  12 +-
 contrib/build/plot/makefile.wat               |   2 +-
 contrib/build/stc/makefile.bcc                |  12 +-
 contrib/build/stc/makefile.gcc                |  28 +-
 contrib/build/stc/makefile.vc                 |  12 +-
 contrib/build/stc/makefile.wat                |   2 +-
 contrib/build/svg/makefile.bcc                |  12 +-
 contrib/build/svg/makefile.gcc                |  22 +-
 contrib/build/svg/makefile.vc                 |  12 +-
 contrib/build/svg/makefile.wat                |   2 +-
 contrib/samples/animate/Makefile.in           |   2 +-
 contrib/samples/animate/makefile.bcc          |  14 +-
 contrib/samples/animate/makefile.gcc          |  16 +-
 contrib/samples/animate/makefile.vc           |  16 +-
 contrib/samples/animate/makefile.wat          |   2 +-
 .../samples/deprecated/proplist/Makefile.in   |   2 +-
 .../samples/deprecated/proplist/makefile.bcc  |  14 +-
 .../samples/deprecated/proplist/makefile.gcc  |  16 +-
 .../samples/deprecated/proplist/makefile.vc   |  16 +-
 .../samples/deprecated/proplist/makefile.wat  |   2 +-
 .../samples/deprecated/resource/Makefile.in   |   2 +-
 .../samples/deprecated/resource/makefile.bcc  |  14 +-
 .../samples/deprecated/resource/makefile.gcc  |  16 +-
 .../samples/deprecated/resource/makefile.vc   |  16 +-
 .../samples/deprecated/resource/makefile.wat  |   2 +-
 .../samples/deprecated/treelay/Makefile.in    |   2 +-
 .../samples/deprecated/treelay/makefile.bcc   |  14 +-
 .../samples/deprecated/treelay/makefile.gcc   |  16 +-
 .../samples/deprecated/treelay/makefile.vc    |  16 +-
 .../samples/deprecated/treelay/makefile.wat   |   2 +-
 contrib/samples/fl/Makefile.in                |  10 +-
 contrib/samples/fl/makefile.bcc               |  46 +--
 contrib/samples/fl/makefile.gcc               |  61 ++--
 contrib/samples/fl/makefile.vc                |  56 ++--
 contrib/samples/fl/makefile.wat               |  10 +-
 contrib/samples/foldbar/extended/Makefile.in  |   2 +-
 contrib/samples/foldbar/extended/makefile.bcc |  14 +-
 contrib/samples/foldbar/extended/makefile.gcc |  16 +-
 contrib/samples/foldbar/extended/makefile.vc  |  16 +-
 contrib/samples/foldbar/extended/makefile.wat |   2 +-
 .../samples/foldbar/foldpanelbar/Makefile.in  |   2 +-
 .../samples/foldbar/foldpanelbar/makefile.bcc |  14 +-
 .../samples/foldbar/foldpanelbar/makefile.gcc |  16 +-
 .../samples/foldbar/foldpanelbar/makefile.vc  |  16 +-
 .../samples/foldbar/foldpanelbar/makefile.wat |   2 +-
 contrib/samples/gizmos/dynsash/Makefile.in    |   2 +-
 contrib/samples/gizmos/dynsash/makefile.bcc   |  14 +-
 contrib/samples/gizmos/dynsash/makefile.gcc   |  16 +-
 contrib/samples/gizmos/dynsash/makefile.vc    |  16 +-
 contrib/samples/gizmos/dynsash/makefile.wat   |   2 +-
 .../samples/gizmos/dynsash_switch/Makefile.in |   2 +-
 .../gizmos/dynsash_switch/makefile.bcc        |  10 +-
 .../gizmos/dynsash_switch/makefile.gcc        |  16 +-
 .../samples/gizmos/dynsash_switch/makefile.vc |  16 +-
 .../gizmos/dynsash_switch/makefile.wat        |   2 +-
 contrib/samples/gizmos/editlbox/Makefile.in   |   2 +-
 contrib/samples/gizmos/editlbox/makefile.bcc  |  14 +-
 contrib/samples/gizmos/editlbox/makefile.gcc  |  16 +-
 contrib/samples/gizmos/editlbox/makefile.vc   |  16 +-
 contrib/samples/gizmos/editlbox/makefile.wat  |   2 +-
 contrib/samples/gizmos/led/Makefile.in        |   2 +-
 contrib/samples/gizmos/led/makefile.bcc       |  14 +-
 contrib/samples/gizmos/led/makefile.gcc       |  16 +-
 contrib/samples/gizmos/led/makefile.vc        |  16 +-
 contrib/samples/gizmos/led/makefile.wat       |   2 +-
 contrib/samples/gizmos/multicell/Makefile.in  |   2 +-
 contrib/samples/gizmos/multicell/makefile.bcc |  14 +-
 contrib/samples/gizmos/multicell/makefile.gcc |  16 +-
 contrib/samples/gizmos/multicell/makefile.vc  |  16 +-
 contrib/samples/gizmos/multicell/makefile.wat |   2 +-
 contrib/samples/gizmos/splittree/Makefile.in  |   2 +-
 contrib/samples/gizmos/splittree/makefile.bcc |  14 +-
 contrib/samples/gizmos/splittree/makefile.gcc |  16 +-
 contrib/samples/gizmos/splittree/makefile.vc  |  16 +-
 contrib/samples/gizmos/splittree/makefile.wat |   2 +-
 contrib/samples/mmedia/Makefile.in            |   2 +-
 contrib/samples/mmedia/makefile.bcc           |  14 +-
 contrib/samples/mmedia/makefile.gcc           |  16 +-
 contrib/samples/mmedia/makefile.vc            |  16 +-
 contrib/samples/mmedia/makefile.wat           |   2 +-
 contrib/samples/ogl/ogledit/Makefile.in       |   2 +-
 contrib/samples/ogl/ogledit/makefile.bcc      |  14 +-
 contrib/samples/ogl/ogledit/makefile.gcc      |  16 +-
 contrib/samples/ogl/ogledit/makefile.vc       |  16 +-
 contrib/samples/ogl/ogledit/makefile.wat      |   2 +-
 contrib/samples/ogl/studio/Makefile.in        |   2 +-
 contrib/samples/ogl/studio/makefile.bcc       |  14 +-
 contrib/samples/ogl/studio/makefile.gcc       |  16 +-
 contrib/samples/ogl/studio/makefile.vc        |  16 +-
 contrib/samples/ogl/studio/makefile.wat       |   2 +-
 contrib/samples/plot/Makefile.in              |   2 +-
 contrib/samples/plot/makefile.bcc             |  14 +-
 contrib/samples/plot/makefile.gcc             |  16 +-
 contrib/samples/plot/makefile.vc              |  16 +-
 contrib/samples/plot/makefile.wat             |   2 +-
 contrib/samples/stc/Makefile.in               |   2 +-
 contrib/samples/stc/makefile.bcc              |  14 +-
 contrib/samples/stc/makefile.gcc              |  16 +-
 contrib/samples/stc/makefile.vc               |  16 +-
 contrib/samples/stc/makefile.wat              |   2 +-
 contrib/samples/svg/Makefile.in               |   2 +-
 contrib/samples/svg/makefile.bcc              |  14 +-
 contrib/samples/svg/makefile.gcc              |  16 +-
 contrib/samples/svg/makefile.vc               |  16 +-
 contrib/samples/svg/makefile.wat              |   2 +-
 contrib/src/animate/Makefile.in               |   2 +-
 contrib/src/deprecated/Makefile.in            |   2 +-
 contrib/src/fl/Makefile.in                    |   2 +-
 contrib/src/foldbar/Makefile.in               |   2 +-
 contrib/src/gizmos/Makefile.in                |   4 +-
 contrib/src/mmedia/Makefile.in                |   2 +-
 contrib/src/net/Makefile.in                   |   2 +-
 contrib/src/ogl/Makefile.in                   |   2 +-
 contrib/src/plot/Makefile.in                  |   2 +-
 contrib/src/stc/Makefile.in                   |   2 +-
 contrib/src/svg/Makefile.in                   |   2 +-
 contrib/utils/convertrc/Makefile.in           |   2 +-
 contrib/utils/convertrc/makefile.bcc          |  14 +-
 contrib/utils/convertrc/makefile.gcc          |  16 +-
 contrib/utils/convertrc/makefile.vc           |  16 +-
 contrib/utils/convertrc/makefile.wat          |   2 +-
 demos/bombs/Makefile.in                       |   2 +-
 demos/bombs/makefile.bcc                      |  13 +-
 demos/bombs/makefile.gcc                      |  15 +-
 demos/bombs/makefile.vc                       |  15 +-
 demos/bombs/makefile.wat                      |   2 +-
 demos/dbbrowse/Makefile.in                    |   2 +-
 demos/dbbrowse/makefile.bcc                   |  13 +-
 demos/dbbrowse/makefile.gcc                   |  15 +-
 demos/dbbrowse/makefile.vc                    |  15 +-
 demos/dbbrowse/makefile.wat                   |   2 +-
 demos/forty/Makefile.in                       |   2 +-
 demos/forty/makefile.bcc                      |  13 +-
 demos/forty/makefile.gcc                      |  15 +-
 demos/forty/makefile.vc                       |  15 +-
 demos/forty/makefile.wat                      |   2 +-
 demos/fractal/Makefile.in                     |   2 +-
 demos/fractal/makefile.bcc                    |  13 +-
 demos/fractal/makefile.gcc                    |  15 +-
 demos/fractal/makefile.vc                     |  15 +-
 demos/fractal/makefile.wat                    |   2 +-
 demos/life/Makefile.in                        |   2 +-
 demos/life/makefile.bcc                       |  13 +-
 demos/life/makefile.gcc                       |  12 +-
 demos/life/makefile.vc                        |  15 +-
 demos/life/makefile.wat                       |   2 +-
 demos/poem/Makefile.in                        |   2 +-
 demos/poem/makefile.bcc                       |  13 +-
 demos/poem/makefile.gcc                       |  15 +-
 demos/poem/makefile.vc                        |  15 +-
 demos/poem/makefile.wat                       |   2 +-
 samples/access/Makefile.in                    |   2 +-
 samples/access/makefile.bcc                   |  13 +-
 samples/access/makefile.gcc                   |  15 +-
 samples/access/makefile.vc                    |  15 +-
 samples/access/makefile.wat                   |   2 +-
 samples/artprov/Makefile.in                   |   2 +-
 samples/artprov/makefile.bcc                  |  13 +-
 samples/artprov/makefile.gcc                  |  15 +-
 samples/artprov/makefile.vc                   |  15 +-
 samples/artprov/makefile.wat                  |   2 +-
 samples/calendar/Makefile.in                  |   2 +-
 samples/calendar/makefile.bcc                 |  13 +-
 samples/calendar/makefile.gcc                 |  15 +-
 samples/calendar/makefile.vc                  |  15 +-
 samples/calendar/makefile.wat                 |   2 +-
 samples/caret/Makefile.in                     |   2 +-
 samples/caret/makefile.bcc                    |  13 +-
 samples/caret/makefile.gcc                    |  15 +-
 samples/caret/makefile.vc                     |  15 +-
 samples/caret/makefile.wat                    |   2 +-
 samples/checklst/Makefile.in                  |   2 +-
 samples/checklst/makefile.bcc                 |  13 +-
 samples/checklst/makefile.gcc                 |  15 +-
 samples/checklst/makefile.vc                  |  15 +-
 samples/checklst/makefile.wat                 |   2 +-
 samples/config/Makefile.in                    |   2 +-
 samples/config/makefile.bcc                   |  13 +-
 samples/config/makefile.gcc                   |  15 +-
 samples/config/makefile.vc                    |  15 +-
 samples/config/makefile.wat                   |   2 +-
 samples/console/makefile.bcc                  |   8 +-
 samples/console/makefile.gcc                  |  10 +-
 samples/console/makefile.vc                   |   9 +-
 samples/controls/Makefile.in                  |   2 +-
 samples/controls/makefile.bcc                 |  13 +-
 samples/controls/makefile.gcc                 |  15 +-
 samples/controls/makefile.vc                  |  15 +-
 samples/controls/makefile.wat                 |   2 +-
 samples/db/Makefile.in                        |   2 +-
 samples/db/makefile.bcc                       |  13 +-
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 samples/db/makefile.vc                        |  15 +-
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 samples/debugrpt/Makefile.in                  |   2 +-
 samples/debugrpt/makefile.bcc                 |  13 +-
 samples/debugrpt/makefile.gcc                 |  15 +-
 samples/debugrpt/makefile.vc                  |  15 +-
 samples/debugrpt/makefile.wat                 |   2 +-
 samples/dialogs/Makefile.in                   |   2 +-
 samples/dialogs/makefile.bcc                  |  13 +-
 samples/dialogs/makefile.gcc                  |  15 +-
 samples/dialogs/makefile.vc                   |  15 +-
 samples/dialogs/makefile.wat                  |   2 +-
 samples/dialup/Makefile.in                    |   2 +-
 samples/dialup/makefile.bcc                   |  13 +-
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 samples/dialup/makefile.vc                    |  15 +-
 samples/dialup/makefile.wat                   |   2 +-
 samples/display/Makefile.in                   |   2 +-
 samples/display/makefile.bcc                  |  13 +-
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 samples/display/makefile.wat                  |   2 +-
 samples/dnd/Makefile.in                       |   2 +-
 samples/dnd/makefile.bcc                      |  13 +-
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 samples/docview/Makefile.in                   |   2 +-
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 samples/dragimag/Makefile.in                  |   2 +-
 samples/dragimag/makefile.bcc                 |  13 +-
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 samples/drawing/Makefile.in                   |   2 +-
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 samples/drawing/makefile.vc                   |  15 +-
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 samples/dynamic/makefile.bcc                  |  13 +-
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 samples/html/about/Makefile.in                |   2 +-
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 samples/html/help/makefile.wat                |   2 +-
 samples/html/helpview/Makefile.in             |   2 +-
 samples/html/helpview/makefile.bcc            |  14 +-
 samples/html/helpview/makefile.gcc            |  16 +-
 samples/html/helpview/makefile.vc             |  15 +-
 samples/html/helpview/makefile.wat            |   2 +-
 samples/html/htmlctrl/Makefile.in             |   2 +-
 samples/html/printing/Makefile.in             |   2 +-
 samples/html/printing/makefile.bcc            |  14 +-
 samples/html/printing/makefile.gcc            |  16 +-
 samples/html/printing/makefile.vc             |  15 +-
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 samples/html/test/Makefile.in                 |   2 +-
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 samples/minifram/makefile.vc                  |  15 +-
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 samples/minimal/Makefile.in                   |   2 +-
 samples/minimal/makefile.bcc                  |  13 +-
 samples/minimal/makefile.gcc                  |  15 +-
 samples/minimal/makefile.vc                   |  15 +-
 samples/minimal/makefile.wat                  |   2 +-
 samples/mobile/styles/Makefile.in             |   2 +-
 samples/mobile/styles/makefile.bcc            |  14 +-
 samples/mobile/styles/makefile.gcc            |  16 +-
 samples/mobile/styles/makefile.vc             |  15 +-
 samples/mobile/styles/makefile.wat            |   2 +-
 samples/mobile/wxedit/Makefile.in             |   2 +-
 samples/mobile/wxedit/makefile.bcc            |  14 +-
 samples/mobile/wxedit/makefile.gcc            |  16 +-
 samples/mobile/wxedit/makefile.vc             |  15 +-
 samples/mobile/wxedit/makefile.wat            |   2 +-
 samples/multimon/Makefile.in                  |   2 +-
 samples/multimon/makefile.bcc                 |  12 +-
 samples/multimon/makefile.gcc                 |  15 +-
 samples/multimon/makefile.vc                  |  15 +-
 samples/multimon/makefile.wat                 |   2 +-
 samples/nativdlg/Makefile.in                  |   2 +-
 samples/nativdlg/makefile.bcc                 |  13 +-
 samples/nativdlg/makefile.gcc                 |  15 +-
 samples/nativdlg/makefile.vc                  |  15 +-
 samples/nativdlg/makefile.wat                 |   2 +-
 samples/notebook/Makefile.in                  |   2 +-
 samples/notebook/makefile.bcc                 |  13 +-
 samples/notebook/makefile.gcc                 |  15 +-
 samples/notebook/makefile.vc                  |  15 +-
 samples/notebook/makefile.wat                 |   2 +-
 samples/oleauto/Makefile.in                   |   2 +-
 samples/oleauto/makefile.bcc                  |  13 +-
 samples/oleauto/makefile.gcc                  |  15 +-
 samples/oleauto/makefile.vc                   |  15 +-
 samples/oleauto/makefile.wat                  |   2 +-
 samples/opengl/cube/Makefile.in               |   2 +-
 samples/opengl/cube/makefile.bcc              |  14 +-
 samples/opengl/cube/makefile.gcc              |  15 +-
 samples/opengl/cube/makefile.vc               |  15 +-
 samples/opengl/cube/makefile.wat              |   2 +-
 samples/opengl/isosurf/Makefile.in            |   2 +-
 samples/opengl/isosurf/makefile.bcc           |  14 +-
 samples/opengl/isosurf/makefile.gcc           |  16 +-
 samples/opengl/isosurf/makefile.vc            |  15 +-
 samples/opengl/isosurf/makefile.wat           |   2 +-
 samples/opengl/penguin/Makefile.in            |   2 +-
 samples/opengl/penguin/makefile.bcc           |  20 +-
 samples/opengl/penguin/makefile.gcc           |  22 +-
 samples/opengl/penguin/makefile.vc            |  21 +-
 samples/opengl/penguin/makefile.wat           |   2 +-
 samples/ownerdrw/Makefile.in                  |   2 +-
 samples/ownerdrw/makefile.bcc                 |  13 +-
 samples/ownerdrw/makefile.gcc                 |  15 +-
 samples/ownerdrw/makefile.vc                  |  15 +-
 samples/ownerdrw/makefile.wat                 |   2 +-
 samples/png/Makefile.in                       |   2 +-
 samples/png/makefile.bcc                      |  13 +-
 samples/png/makefile.gcc                      |  12 +-
 samples/png/makefile.vc                       |  15 +-
 samples/png/makefile.wat                      |   2 +-
 samples/popup/Makefile.in                     |   2 +-
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 samples/popup/makefile.gcc                    |  15 +-
 samples/popup/makefile.vc                     |  15 +-
 samples/popup/makefile.wat                    |   2 +-
 samples/printing/Makefile.in                  |   2 +-
 samples/printing/makefile.bcc                 |  13 +-
 samples/printing/makefile.gcc                 |  15 +-
 samples/printing/makefile.vc                  |  15 +-
 samples/printing/makefile.wat                 |   2 +-
 samples/propsize/Makefile.in                  |   2 +-
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 samples/propsize/makefile.gcc                 |  15 +-
 samples/propsize/makefile.vc                  |  15 +-
 samples/propsize/makefile.wat                 |   2 +-
 samples/regtest/Makefile.in                   |   2 +-
 samples/regtest/makefile.bcc                  |  13 +-
 samples/regtest/makefile.gcc                  |  15 +-
 samples/regtest/makefile.vc                   |  15 +-
 samples/regtest/makefile.wat                  |   2 +-
 samples/render/Makefile.in                    |   2 +-
 samples/render/makefile.bcc                   |  17 +-
 samples/render/makefile.gcc                   |  20 +-
 samples/render/makefile.vc                    |  18 +-
 samples/render/makefile.wat                   |   2 +-
 samples/richedit/Makefile.in                  |   2 +-
 samples/richedit/makefile.bcc                 |  13 +-
 samples/richedit/makefile.gcc                 |  15 +-
 samples/richedit/makefile.vc                  |  15 +-
 samples/richedit/makefile.wat                 |   2 +-
 samples/rotate/Makefile.in                    |   2 +-
 samples/rotate/makefile.bcc                   |  13 +-
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 samples/rotate/makefile.vc                    |  15 +-
 samples/rotate/makefile.wat                   |   2 +-
 samples/sashtest/Makefile.in                  |   2 +-
 samples/sashtest/makefile.bcc                 |  13 +-
 samples/sashtest/makefile.gcc                 |  15 +-
 samples/sashtest/makefile.vc                  |  15 +-
 samples/sashtest/makefile.wat                 |   2 +-
 samples/scroll/Makefile.in                    |   2 +-
 samples/scroll/makefile.bcc                   |  13 +-
 samples/scroll/makefile.gcc                   |  15 +-
 samples/scroll/makefile.vc                    |  15 +-
 samples/scroll/makefile.wat                   |   2 +-
 samples/scrollsub/Makefile.in                 |   2 +-
 samples/scrollsub/makefile.bcc                |  13 +-
 samples/scrollsub/makefile.gcc                |  15 +-
 samples/scrollsub/makefile.vc                 |  15 +-
 samples/scrollsub/makefile.wat                |   2 +-
 samples/shaped/Makefile.in                    |   2 +-
 samples/shaped/makefile.bcc                   |  13 +-
 samples/shaped/makefile.gcc                   |  15 +-
 samples/shaped/makefile.vc                    |  15 +-
 samples/shaped/makefile.wat                   |   2 +-
 samples/sockets/Makefile.in                   |   4 +-
 samples/sockets/makefile.bcc                  |  20 +-
 samples/sockets/makefile.gcc                  |  22 +-
 samples/sockets/makefile.vc                   |  22 +-
 samples/sockets/makefile.wat                  |   4 +-
 samples/sound/makefile.wat                    |   2 +-
 samples/splash/Makefile.in                    |   2 +-
 samples/splash/makefile.bcc                   |  13 +-
 samples/splash/makefile.gcc                   |  15 +-
 samples/splash/makefile.vc                    |  15 +-
 samples/splash/makefile.wat                   |   2 +-
 samples/splitter/Makefile.in                  |   2 +-
 samples/splitter/makefile.bcc                 |  13 +-
 samples/splitter/makefile.gcc                 |  15 +-
 samples/splitter/makefile.vc                  |  15 +-
 samples/splitter/makefile.wat                 |   2 +-
 samples/statbar/Makefile.in                   |   2 +-
 samples/statbar/makefile.bcc                  |  13 +-
 samples/statbar/makefile.gcc                  |  15 +-
 samples/statbar/makefile.vc                   |  15 +-
 samples/statbar/makefile.wat                  |   2 +-
 samples/stc/Makefile.in                       |   2 +-
 samples/stc/makefile.bcc                      |  14 +-
 samples/stc/makefile.gcc                      |  16 +-
 samples/stc/makefile.vc                       |  16 +-
 samples/stc/makefile.wat                      |   2 +-
 samples/svg/Makefile.in                       |   2 +-
 samples/svg/makefile.bcc                      |  14 +-
 samples/svg/makefile.gcc                      |  16 +-
 samples/svg/makefile.vc                       |  16 +-
 samples/svg/makefile.wat                      |   2 +-
 samples/taskbar/Makefile.in                   |   2 +-
 samples/taskbar/makefile.bcc                  |  13 +-
 samples/taskbar/makefile.gcc                  |  15 +-
 samples/taskbar/makefile.vc                   |  15 +-
 samples/taskbar/makefile.wat                  |   2 +-
 samples/text/Makefile.in                      |   2 +-
 samples/text/makefile.bcc                     |  13 +-
 samples/text/makefile.gcc                     |  12 +-
 samples/text/makefile.vc                      |  15 +-
 samples/text/makefile.wat                     |   2 +-
 samples/thread/Makefile.in                    |   2 +-
 samples/thread/makefile.bcc                   |  13 +-
 samples/thread/makefile.gcc                   |  15 +-
 samples/thread/makefile.vc                    |  15 +-
 samples/thread/makefile.wat                   |   2 +-
 samples/toolbar/Makefile.in                   |   2 +-
 samples/toolbar/makefile.bcc                  |  13 +-
 samples/toolbar/makefile.gcc                  |  15 +-
 samples/toolbar/makefile.vc                   |  15 +-
 samples/toolbar/makefile.wat                  |   2 +-
 samples/treectrl/Makefile.in                  |   2 +-
 samples/treectrl/makefile.bcc                 |  13 +-
 samples/treectrl/makefile.gcc                 |  15 +-
 samples/treectrl/makefile.vc                  |  15 +-
 samples/treectrl/makefile.wat                 |   2 +-
 samples/typetest/Makefile.in                  |   2 +-
 samples/typetest/makefile.bcc                 |  13 +-
 samples/typetest/makefile.gcc                 |  15 +-
 samples/typetest/makefile.vc                  |  15 +-
 samples/typetest/makefile.wat                 |   2 +-
 samples/validate/Makefile.in                  |   2 +-
 samples/validate/makefile.bcc                 |  13 +-
 samples/validate/makefile.gcc                 |  15 +-
 samples/validate/makefile.vc                  |  15 +-
 samples/validate/makefile.wat                 |   2 +-
 samples/vscroll/Makefile.in                   |   2 +-
 samples/vscroll/makefile.bcc                  |  13 +-
 samples/vscroll/makefile.gcc                  |  15 +-
 samples/vscroll/makefile.vc                   |  15 +-
 samples/vscroll/makefile.wat                  |   2 +-
 samples/widgets/Makefile.in                   |   2 +-
 samples/widgets/makefile.bcc                  |  13 +-
 samples/widgets/makefile.gcc                  |  15 +-
 samples/widgets/makefile.vc                   |  15 +-
 samples/widgets/makefile.wat                  |   2 +-
 samples/wizard/Makefile.in                    |   2 +-
 samples/wizard/makefile.bcc                   |  13 +-
 samples/wizard/makefile.gcc                   |  15 +-
 samples/wizard/makefile.vc                    |  15 +-
 samples/wizard/makefile.wat                   |   2 +-
 samples/xrc/Makefile.in                       |   2 +-
 samples/xrc/makefile.bcc                      |  13 +-
 samples/xrc/makefile.gcc                      |  15 +-
 samples/xrc/makefile.vc                       |  15 +-
 samples/xrc/makefile.wat                      |   2 +-
 src/stc/Makefile.in                           |   2 +-
 tests/Makefile.in                             |   2 +-
 tests/makefile.bcc                            |  21 +-
 tests/makefile.gcc                            |  20 +-
 tests/makefile.vc                             |  23 +-
 tests/makefile.wat                            |   2 +-
 utils/HelpGen/src/makefile.bcc                |   8 +-
 utils/HelpGen/src/makefile.gcc                |  10 +-
 utils/HelpGen/src/makefile.vc                 |   9 +-
 utils/configtool/src/Makefile.in              |   2 +-
 utils/configtool/src/makefile.bcc             |  14 +-
 utils/configtool/src/makefile.gcc             |  16 +-
 utils/configtool/src/makefile.vc              |  15 +-
 utils/configtool/src/makefile.wat             |   2 +-
 utils/emulator/src/Makefile.in                |   2 +-
 utils/emulator/src/makefile.bcc               |  14 +-
 utils/emulator/src/makefile.gcc               |  16 +-
 utils/emulator/src/makefile.vc                |  15 +-
 utils/emulator/src/makefile.wat               |   2 +-
 utils/helpview/src/Makefile.in                |   2 +-
 utils/helpview/src/makefile.bcc               |  14 +-
 utils/helpview/src/makefile.gcc               |  16 +-
 utils/helpview/src/makefile.vc                |  15 +-
 utils/helpview/src/makefile.wat               |   2 +-
 utils/hhp2cached/Makefile.in                  |   2 +-
 utils/hhp2cached/makefile.bcc                 |  13 +-
 utils/hhp2cached/makefile.gcc                 |  15 +-
 utils/hhp2cached/makefile.vc                  |  15 +-
 utils/hhp2cached/makefile.wat                 |   2 +-
 utils/tex2rtf/src/Makefile.in                 |   2 +-
 utils/tex2rtf/src/makefile.bcc                |  20 +-
 utils/tex2rtf/src/makefile.gcc                |  23 +-
 utils/tex2rtf/src/makefile.vc                 |  21 +-
 utils/tex2rtf/src/makefile.wat                |   2 +-
 utils/wxrc/makefile.bcc                       |   8 +-
 utils/wxrc/makefile.gcc                       |   7 +-
 utils/wxrc/makefile.vc                        |   9 +-
 673 files changed, 5137 insertions(+), 2367 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index 8abbbe763e..8b615305bd 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -279,7 +279,6 @@ ALL_BASE_HEADERS =  \
 	wx/mimetype.h \
 	wx/module.h \
 	wx/msgout.h \
-	wx/msgout.h \
 	wx/mstream.h \
 	wx/object.h \
 	wx/platform.h \
@@ -10115,7 +10114,7 @@ wxexpat_xmltok.o: $(srcdir)/src/expat/lib/xmltok.c
 	$(CCC) -c -o $@ $(WXEXPAT_CFLAGS) $(srcdir)/src/expat/lib/xmltok.c
 
 monodll_version_rc.o: $(srcdir)/src/msw/version.rc $(MONODLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 monodll_appbase.o: $(srcdir)/src/common/appbase.cpp $(MONODLL_ODEP)
 	$(CXXC) -c -o $@ $(MONODLL_CXXFLAGS) $(srcdir)/src/common/appbase.cpp
@@ -17036,7 +17035,7 @@ monolib_sound_sdl.o: $(srcdir)/src/unix/sound_sdl.cpp $(MONOLIB_ODEP)
 @COND_PLATFORM_MACOSX_1_USE_GUI_1@	$(CXXC) -c -o $@ $(MONOLIB_CXXFLAGS) $(srcdir)/src/html/chm.cpp
 
 basedll_version_rc.o: $(srcdir)/src/msw/version.rc $(BASEDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)  --define WXDLLNAME=$(WXDLLNAMEPREFIX)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)   --define WXDLLNAME=$(WXDLLNAMEPREFIX)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 basedll_appbase.o: $(srcdir)/src/common/appbase.cpp $(BASEDLL_ODEP)
 	$(CXXC) -c -o $@ $(BASEDLL_CXXFLAGS) $(srcdir)/src/common/appbase.cpp
@@ -18143,7 +18142,7 @@ baselib_uma.o: $(srcdir)/src/mac/carbon/uma.cpp $(BASELIB_ODEP)
 @COND_PLATFORM_MACOSX_1@	$(CXXC) -c -o $@ $(BASELIB_CXXFLAGS) $(srcdir)/src/unix/utilsunx.cpp
 
 netdll_version_rc.o: $(srcdir)/src/msw/version.rc $(NETDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)  --define WXDLLNAME=$(WXDLLNAMEPREFIX)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_net$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)   --define WXDLLNAME=$(WXDLLNAMEPREFIX)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_net$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 netdll_fs_inet.o: $(srcdir)/src/common/fs_inet.cpp $(NETDLL_ODEP)
 	$(CXXC) -c -o $@ $(NETDLL_CXXFLAGS) $(srcdir)/src/common/fs_inet.cpp
@@ -18248,7 +18247,7 @@ netlib_net.o: $(srcdir)/src/msw/wince/net.cpp $(NETLIB_ODEP)
 @COND_PLATFORM_MACOS_1@	$(CXXC) -c -o $@ $(NETLIB_CXXFLAGS) $(srcdir)/src/mac/carbon/gsocket.cpp
 
 coredll_version_rc.o: $(srcdir)/src/msw/version.rc $(COREDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_core$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_core$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 coredll_event.o: $(srcdir)/src/common/event.cpp $(COREDLL_ODEP)
 	$(CXXC) -c -o $@ $(COREDLL_CXXFLAGS) $(srcdir)/src/common/event.cpp
@@ -23267,7 +23266,7 @@ corelib_win32.o: $(srcdir)/src/univ/themes/win32.cpp $(CORELIB_ODEP)
 @COND_USE_GUI_1@	$(CXXC) -c -o $@ $(CORELIB_CXXFLAGS) $(srcdir)/src/generic/vscroll.cpp
 
 advdll_version_rc.o: $(srcdir)/src/msw/version.rc $(ADVDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_adv$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_adv$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 advdll_datectrl.o: $(srcdir)/src/msw/datectrl.cpp $(ADVDLL_ODEP)
 	$(CXXC) -c -o $@ $(ADVDLL_CXXFLAGS) $(srcdir)/src/msw/datectrl.cpp
@@ -23540,7 +23539,7 @@ advlib_wizard.o: $(srcdir)/src/generic/wizard.cpp $(ADVLIB_ODEP)
 @COND_TOOLKIT_GTK@	$(CCC) -c -o $@ $(ADVLIB_CFLAGS) $(srcdir)/src/gtk/eggtrayicon.c
 
 mediadll_version_rc.o: $(srcdir)/src/msw/version.rc $(MEDIADLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_media$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_media$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 mediadll_mediactrlcmn.o: $(srcdir)/src/common/mediactrlcmn.cpp $(MEDIADLL_ODEP)
 	$(CXXC) -c -o $@ $(MEDIADLL_CXXFLAGS) $(srcdir)/src/common/mediactrlcmn.cpp
@@ -23591,7 +23590,7 @@ medialib_mediactrlcmn.o: $(srcdir)/src/common/mediactrlcmn.cpp $(MEDIALIB_ODEP)
 @COND_TOOLKIT_X11@	$(CXXC) -c -o $@ $(MEDIALIB_CXXFLAGS) $(srcdir)/src/unix/mediactrl.cpp
 
 odbcdll_version_rc.o: $(srcdir)/src/msw/version.rc $(ODBCDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)  --define WXDLLNAME=$(WXDLLNAMEPREFIX)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_odbc$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)   --define WXDLLNAME=$(WXDLLNAMEPREFIX)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_odbc$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 odbcdll_db.o: $(srcdir)/src/common/db.cpp $(ODBCDLL_ODEP)
 	$(CXXC) -c -o $@ $(ODBCDLL_CXXFLAGS) $(srcdir)/src/common/db.cpp
@@ -23606,7 +23605,7 @@ odbclib_dbtable.o: $(srcdir)/src/common/dbtable.cpp $(ODBCLIB_ODEP)
 	$(CXXC) -c -o $@ $(ODBCLIB_CXXFLAGS) $(srcdir)/src/common/dbtable.cpp
 
 dbgriddll_version_rc.o: $(srcdir)/src/msw/version.rc $(DBGRIDDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_dbgrid$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_dbgrid$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 dbgriddll_dbgrid.o: $(srcdir)/src/common/dbgrid.cpp $(DBGRIDDLL_ODEP)
 	$(CXXC) -c -o $@ $(DBGRIDDLL_CXXFLAGS) $(srcdir)/src/common/dbgrid.cpp
@@ -23615,7 +23614,7 @@ dbgridlib_dbgrid.o: $(srcdir)/src/common/dbgrid.cpp $(DBGRIDLIB_ODEP)
 	$(CXXC) -c -o $@ $(DBGRIDLIB_CXXFLAGS) $(srcdir)/src/common/dbgrid.cpp
 
 htmldll_version_rc.o: $(srcdir)/src/msw/version.rc $(HTMLDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_html$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_html$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 htmldll_helpbest.o: $(srcdir)/src/msw/helpbest.cpp $(HTMLDLL_ODEP)
 	$(CXXC) -c -o $@ $(HTMLDLL_CXXFLAGS) $(srcdir)/src/msw/helpbest.cpp
@@ -23762,7 +23761,7 @@ htmllib_htmllbox.o: $(srcdir)/src/generic/htmllbox.cpp $(HTMLLIB_ODEP)
 @COND_PLATFORM_MACOSX_1@	$(CXXC) -c -o $@ $(HTMLLIB_CXXFLAGS) $(srcdir)/src/html/chm.cpp
 
 qadll_version_rc.o: $(srcdir)/src/msw/version.rc $(QADLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_qa$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_qa$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 qadll_debugrpt.o: $(srcdir)/src/common/debugrpt.cpp $(QADLL_ODEP)
 	$(CXXC) -c -o $@ $(QADLL_CXXFLAGS) $(srcdir)/src/common/debugrpt.cpp
@@ -23777,7 +23776,7 @@ qalib_dbgrptg.o: $(srcdir)/src/generic/dbgrptg.cpp $(QALIB_ODEP)
 	$(CXXC) -c -o $@ $(QALIB_CXXFLAGS) $(srcdir)/src/generic/dbgrptg.cpp
 
 xmldll_version_rc.o: $(srcdir)/src/msw/version.rc $(XMLDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)  --define WXDLLNAME=$(WXDLLNAMEPREFIX)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xml$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)   --define WXDLLNAME=$(WXDLLNAMEPREFIX)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xml$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 xmldll_xml.o: $(srcdir)/src/xml/xml.cpp $(XMLDLL_ODEP)
 	$(CXXC) -c -o $@ $(XMLDLL_CXXFLAGS) $(srcdir)/src/xml/xml.cpp
@@ -23792,7 +23791,7 @@ xmllib_xtixml.o: $(srcdir)/src/common/xtixml.cpp $(XMLLIB_ODEP)
 	$(CXXC) -c -o $@ $(XMLLIB_CXXFLAGS) $(srcdir)/src/common/xtixml.cpp
 
 xrcdll_version_rc.o: $(srcdir)/src/msw/version.rc $(XRCDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xrc$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xrc$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 xrcdll_xh_bmpbt.o: $(srcdir)/src/xrc/xh_bmpbt.cpp $(XRCDLL_ODEP)
 	$(CXXC) -c -o $@ $(XRCDLL_CXXFLAGS) $(srcdir)/src/xrc/xh_bmpbt.cpp
@@ -24053,7 +24052,7 @@ xrclib_xmlrsall.o: $(srcdir)/src/xrc/xmlrsall.cpp $(XRCLIB_ODEP)
 	$(CXXC) -c -o $@ $(XRCLIB_CXXFLAGS) $(srcdir)/src/xrc/xmlrsall.cpp
 
 gldll_version_rc.o: $(srcdir)/src/msw/version.rc $(GLDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gl$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_49)  $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gl$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 @COND_TOOLKIT_MAC@gldll_glcanvas.o: $(srcdir)/src/mac/carbon/glcanvas.cpp $(GLDLL_ODEP)
 @COND_TOOLKIT_MAC@	$(CXXC) -c -o $@ $(GLDLL_CXXFLAGS) $(srcdir)/src/mac/carbon/glcanvas.cpp
diff --git a/build/msw/makefile.bcc b/build/msw/makefile.bcc
index f091d1680d..f9e22d7fdf 100644
--- a/build/msw/makefile.bcc
+++ b/build/msw/makefile.bcc
@@ -185,17 +185,18 @@ WXEXPAT_OBJECTS =  \
 MONODLL_CFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_BASE=1 -DWXMAKINGDLL \
-	$(CPPFLAGS) $(CFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_BASE=1 -DWXMAKINGDLL $(CPPFLAGS) $(CFLAGS)
 MONODLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_BASE=1 -DWXMAKINGDLL -Hu \
-	-H=$(OBJS)\wxprec_monodll.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_BASE=1 -DWXMAKINGDLL -Hu -H=$(OBJS)\wxprec_monodll.csm $(CPPFLAGS) \
+	$(CXXFLAGS)
 MONODLL_OBJECTS =  \
 	$(OBJS)\monodll_dummy.obj \
 	$(OBJS)\monodll_appbase.obj \
@@ -293,16 +294,17 @@ MONODLL_OBJECTS =  \
 MONOLIB_CFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
 MONOLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_BASE=1 -Hu \
-	-H=$(OBJS)\wxprec_monolib.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_BASE=1 -Hu -H=$(OBJS)\wxprec_monolib.csm $(CPPFLAGS) $(CXXFLAGS)
 MONOLIB_OBJECTS =  \
 	$(OBJS)\monolib_dummy.obj \
 	$(OBJS)\monolib_appbase.obj \
@@ -400,17 +402,18 @@ MONOLIB_OBJECTS =  \
 BASEDLL_CFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DWXMAKINGDLL_BASE \
-	-DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_GUI=0 -DWXMAKINGDLL_BASE -DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
 BASEDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DWXMAKINGDLL_BASE \
-	-DwxUSE_BASE=1 -Hu -H=$(OBJS)\wxprec_basedll.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_GUI=0 -DWXMAKINGDLL_BASE -DwxUSE_BASE=1 -Hu \
+	-H=$(OBJS)\wxprec_basedll.csm $(CPPFLAGS) $(CXXFLAGS)
 BASEDLL_OBJECTS =  \
 	$(OBJS)\basedll_dummy.obj \
 	$(OBJS)\basedll_appbase.obj \
@@ -493,17 +496,18 @@ BASEDLL_OBJECTS =  \
 BASELIB_CFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DwxUSE_BASE=1 \
-	$(CPPFLAGS) $(CFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_GUI=0 -DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
 BASELIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DwxUSE_BASE=1 -Hu \
-	-H=$(OBJS)\wxprec_baselib.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_GUI=0 -DwxUSE_BASE=1 -Hu -H=$(OBJS)\wxprec_baselib.csm $(CPPFLAGS) \
+	$(CXXFLAGS)
 BASELIB_OBJECTS =  \
 	$(OBJS)\baselib_dummy.obj \
 	$(OBJS)\baselib_appbase.obj \
@@ -586,10 +590,11 @@ BASELIB_OBJECTS =  \
 NETDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DWXUSINGDLL \
-	-DWXMAKINGDLL_NET -Hu -H=$(OBJS)\wxprec_netdll.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_GUI=0 -DWXUSINGDLL -DWXMAKINGDLL_NET -Hu \
+	-H=$(OBJS)\wxprec_netdll.csm $(CPPFLAGS) $(CXXFLAGS)
 NETDLL_OBJECTS =  \
 	$(OBJS)\netdll_dummy.obj \
 	$(OBJS)\netdll_fs_inet.obj \
@@ -607,10 +612,10 @@ NETDLL_OBJECTS =  \
 NETLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -Hu \
-	-H=$(OBJS)\wxprec_netlib.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_GUI=0 -Hu -H=$(OBJS)\wxprec_netlib.csm $(CPPFLAGS) $(CXXFLAGS)
 NETLIB_OBJECTS =  \
 	$(OBJS)\netlib_dummy.obj \
 	$(OBJS)\netlib_fs_inet.obj \
@@ -628,10 +633,11 @@ NETLIB_OBJECTS =  \
 COREDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_CORE \
-	-DwxUSE_BASE=0 -Hu -H=$(OBJS)\wxprec_coredll.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DWXUSINGDLL -DWXMAKINGDLL_CORE -DwxUSE_BASE=0 -Hu \
+	-H=$(OBJS)\wxprec_coredll.csm $(CPPFLAGS) $(CXXFLAGS)
 COREDLL_OBJECTS =  \
 	$(OBJS)\coredll_dummy.obj \
 	$(OBJS)\coredll_event.obj \
@@ -645,10 +651,10 @@ COREDLL_OBJECTS =  \
 CORELIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_BASE=0 -Hu \
-	-H=$(OBJS)\wxprec_corelib.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_BASE=0 -Hu -H=$(OBJS)\wxprec_corelib.csm $(CPPFLAGS) $(CXXFLAGS)
 CORELIB_OBJECTS =  \
 	$(OBJS)\corelib_dummy.obj \
 	$(OBJS)\corelib_event.obj \
@@ -662,30 +668,32 @@ CORELIB_OBJECTS =  \
 ADVDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_ADV -Hu \
-	-H=$(OBJS)\wxprec_advdll.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DWXUSINGDLL -DWXMAKINGDLL_ADV -Hu -H=$(OBJS)\wxprec_advdll.csm $(CPPFLAGS) \
+	$(CXXFLAGS)
 ADVDLL_OBJECTS =  \
 	$(OBJS)\advdll_dummy.obj \
 	$(____ADVANCED_SRC_FILENAMES_2_OBJECTS)
 ADVLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -Hu -H=$(OBJS)\wxprec_advlib.csm \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib -Hu \
+	-H=$(OBJS)\wxprec_advlib.csm $(CPPFLAGS) $(CXXFLAGS)
 ADVLIB_OBJECTS =  \
 	$(OBJS)\advlib_dummy.obj \
 	$(____ADVANCED_SRC_FILENAMES_3_OBJECTS)
 MEDIADLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_MEDIA -Hu \
-	-H=$(OBJS)\wxprec_mediadll.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DWXUSINGDLL -DWXMAKINGDLL_MEDIA -Hu -H=$(OBJS)\wxprec_mediadll.csm \
+	$(CPPFLAGS) $(CXXFLAGS)
 MEDIADLL_OBJECTS =  \
 	$(OBJS)\mediadll_dummy.obj \
 	$(OBJS)\mediadll_mediactrlcmn.obj \
@@ -693,10 +701,10 @@ MEDIADLL_OBJECTS =  \
 MEDIALIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -Hu -H=$(OBJS)\wxprec_medialib.csm \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib -Hu \
+	-H=$(OBJS)\wxprec_medialib.csm $(CPPFLAGS) $(CXXFLAGS)
 MEDIALIB_OBJECTS =  \
 	$(OBJS)\medialib_dummy.obj \
 	$(OBJS)\medialib_mediactrlcmn.obj \
@@ -704,10 +712,11 @@ MEDIALIB_OBJECTS =  \
 ODBCDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DWXUSINGDLL \
-	-DWXMAKINGDLL_ODBC -Hu -H=$(OBJS)\wxprec_odbcdll.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_GUI=0 -DWXUSINGDLL -DWXMAKINGDLL_ODBC -Hu \
+	-H=$(OBJS)\wxprec_odbcdll.csm $(CPPFLAGS) $(CXXFLAGS)
 ODBCDLL_OBJECTS =  \
 	$(OBJS)\odbcdll_dummy.obj \
 	$(OBJS)\odbcdll_db.obj \
@@ -715,10 +724,10 @@ ODBCDLL_OBJECTS =  \
 ODBCLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -Hu \
-	-H=$(OBJS)\wxprec_odbclib.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_GUI=0 -Hu -H=$(OBJS)\wxprec_odbclib.csm $(CPPFLAGS) $(CXXFLAGS)
 ODBCLIB_OBJECTS =  \
 	$(OBJS)\odbclib_dummy.obj \
 	$(OBJS)\odbclib_db.obj \
@@ -726,30 +735,32 @@ ODBCLIB_OBJECTS =  \
 DBGRIDDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_DBGRID \
-	-Hu -H=$(OBJS)\wxprec_dbgriddll.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DWXUSINGDLL -DWXMAKINGDLL_DBGRID -Hu -H=$(OBJS)\wxprec_dbgriddll.csm \
+	$(CPPFLAGS) $(CXXFLAGS)
 DBGRIDDLL_OBJECTS =  \
 	$(OBJS)\dbgriddll_dummy.obj \
 	$(OBJS)\dbgriddll_dbgrid.obj
 DBGRIDLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -Hu -H=$(OBJS)\wxprec_dbgridlib.csm \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib -Hu \
+	-H=$(OBJS)\wxprec_dbgridlib.csm $(CPPFLAGS) $(CXXFLAGS)
 DBGRIDLIB_OBJECTS =  \
 	$(OBJS)\dbgridlib_dummy.obj \
 	$(OBJS)\dbgridlib_dbgrid.obj
 HTMLDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_HTML -Hu \
-	-H=$(OBJS)\wxprec_htmldll.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DWXUSINGDLL -DWXMAKINGDLL_HTML -Hu -H=$(OBJS)\wxprec_htmldll.csm \
+	$(CPPFLAGS) $(CXXFLAGS)
 HTMLDLL_OBJECTS =  \
 	$(OBJS)\htmldll_dummy.obj \
 	$(OBJS)\htmldll_helpbest.obj \
@@ -777,10 +788,10 @@ HTMLDLL_OBJECTS =  \
 HTMLLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -Hu -H=$(OBJS)\wxprec_htmllib.csm \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib -Hu \
+	-H=$(OBJS)\wxprec_htmllib.csm $(CPPFLAGS) $(CXXFLAGS)
 HTMLLIB_OBJECTS =  \
 	$(OBJS)\htmllib_dummy.obj \
 	$(OBJS)\htmllib_helpbest.obj \
@@ -808,10 +819,11 @@ HTMLLIB_OBJECTS =  \
 QADLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_QA -Hu \
-	-H=$(OBJS)\wxprec_qadll.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DWXUSINGDLL -DWXMAKINGDLL_QA -Hu -H=$(OBJS)\wxprec_qadll.csm $(CPPFLAGS) \
+	$(CXXFLAGS)
 QADLL_OBJECTS =  \
 	$(OBJS)\qadll_dummy.obj \
 	$(OBJS)\qadll_debugrpt.obj \
@@ -819,10 +831,10 @@ QADLL_OBJECTS =  \
 QALIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -Hu -H=$(OBJS)\wxprec_qalib.csm \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib -Hu \
+	-H=$(OBJS)\wxprec_qalib.csm $(CPPFLAGS) $(CXXFLAGS)
 QALIB_OBJECTS =  \
 	$(OBJS)\qalib_dummy.obj \
 	$(OBJS)\qalib_debugrpt.obj \
@@ -830,10 +842,11 @@ QALIB_OBJECTS =  \
 XMLDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DWXUSINGDLL \
-	-DWXMAKINGDLL_XML -Hu -H=$(OBJS)\wxprec_xmldll.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_GUI=0 -DWXUSINGDLL -DWXMAKINGDLL_XML -Hu \
+	-H=$(OBJS)\wxprec_xmldll.csm $(CPPFLAGS) $(CXXFLAGS)
 XMLDLL_OBJECTS =  \
 	$(OBJS)\xmldll_dummy.obj \
 	$(OBJS)\xmldll_xml.obj \
@@ -841,10 +854,10 @@ XMLDLL_OBJECTS =  \
 XMLLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -Hu \
-	-H=$(OBJS)\wxprec_xmllib.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_GUI=0 -Hu -H=$(OBJS)\wxprec_xmllib.csm $(CPPFLAGS) $(CXXFLAGS)
 XMLLIB_OBJECTS =  \
 	$(OBJS)\xmllib_dummy.obj \
 	$(OBJS)\xmllib_xml.obj \
@@ -852,10 +865,11 @@ XMLLIB_OBJECTS =  \
 XRCDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_XRC -Hu \
-	-H=$(OBJS)\wxprec_xrcdll.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DWXUSINGDLL -DWXMAKINGDLL_XRC -Hu -H=$(OBJS)\wxprec_xrcdll.csm $(CPPFLAGS) \
+	$(CXXFLAGS)
 XRCDLL_OBJECTS =  \
 	$(OBJS)\xrcdll_dummy.obj \
 	$(OBJS)\xrcdll_xh_bmpbt.obj \
@@ -904,10 +918,10 @@ XRCDLL_OBJECTS =  \
 XRCLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -Hu -H=$(OBJS)\wxprec_xrclib.csm \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib -Hu \
+	-H=$(OBJS)\wxprec_xrclib.csm $(CPPFLAGS) $(CXXFLAGS)
 XRCLIB_OBJECTS =  \
 	$(OBJS)\xrclib_dummy.obj \
 	$(OBJS)\xrclib_xh_bmpbt.obj \
@@ -956,20 +970,21 @@ XRCLIB_OBJECTS =  \
 GLDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_GL -Hu \
-	-H=$(OBJS)\wxprec_gldll.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DWXUSINGDLL -DWXMAKINGDLL_GL -Hu -H=$(OBJS)\wxprec_gldll.csm $(CPPFLAGS) \
+	$(CXXFLAGS)
 GLDLL_OBJECTS =  \
 	$(OBJS)\gldll_dummy.obj \
 	$(OBJS)\gldll_glcanvas.obj
 GLLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -Hu -H=$(OBJS)\wxprec_gllib.csm \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib -Hu \
+	-H=$(OBJS)\wxprec_gllib.csm $(CPPFLAGS) $(CXXFLAGS)
 GLLIB_OBJECTS =  \
 	$(OBJS)\gllib_dummy.obj \
 	$(OBJS)\gllib_glcanvas.obj
@@ -3048,6 +3063,9 @@ __THREAD_DEFINE_p_49 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_50 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_49 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(USE_GUI)" == "1"
 __LIB_TIFF_p = wxtiff$(WXDEBUGFLAG).lib
 !endif
@@ -3111,6 +3129,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(WXUNIV)" == "0"
 __SETUP_H_SUBDIR_FILENAMES = msw
 !endif
@@ -3905,7 +3926,7 @@ $(OBJS)\monodll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(MONODLL_CXXFLAGS) -H $**
 
 $(OBJS)\monodll_version.res: ..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_bcc$(VENDORTAG) $**
 
 $(OBJS)\monodll_appbase.obj: ..\..\src\common\appbase.cpp
 	$(CXX) -q -c -P -o$@ $(MONODLL_CXXFLAGS) $**
@@ -7278,7 +7299,7 @@ $(OBJS)\basedll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(BASEDLL_CXXFLAGS) -H $**
 
 $(OBJS)\basedll_version.res: ..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_bcc$(VENDORTAG) $**
 
 $(OBJS)\basedll_appbase.obj: ..\..\src\common\appbase.cpp
 	$(CXX) -q -c -P -o$@ $(BASEDLL_CXXFLAGS) $**
@@ -7749,7 +7770,7 @@ $(OBJS)\netdll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(NETDLL_CXXFLAGS) -H $**
 
 $(OBJS)\netdll_version.res: ..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_net_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_net_bcc$(VENDORTAG) $**
 
 $(OBJS)\netdll_fs_inet.obj: ..\..\src\common\fs_inet.cpp
 	$(CXX) -q -c -P -o$@ $(NETDLL_CXXFLAGS) $**
@@ -7830,7 +7851,7 @@ $(OBJS)\coredll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(COREDLL_CXXFLAGS) -H $**
 
 $(OBJS)\coredll_version.res: ..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_core_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_core_bcc$(VENDORTAG) $**
 
 $(OBJS)\coredll_event.obj: ..\..\src\common\event.cpp
 	$(CXX) -q -c -P -o$@ $(COREDLL_CXXFLAGS) $**
@@ -10101,7 +10122,7 @@ $(OBJS)\advdll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(ADVDLL_CXXFLAGS) -H $**
 
 $(OBJS)\advdll_version.res: ..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_adv_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_adv_bcc$(VENDORTAG) $**
 
 $(OBJS)\advdll_datectrl.obj: ..\..\src\msw\datectrl.cpp
 	$(CXX) -q -c -P -o$@ $(ADVDLL_CXXFLAGS) $**
@@ -10212,7 +10233,7 @@ $(OBJS)\mediadll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(MEDIADLL_CXXFLAGS) -H $**
 
 $(OBJS)\mediadll_version.res: ..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_media_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_media_bcc$(VENDORTAG) $**
 
 $(OBJS)\mediadll_mediactrlcmn.obj: ..\..\src\common\mediactrlcmn.cpp
 	$(CXX) -q -c -P -o$@ $(MEDIADLL_CXXFLAGS) $**
@@ -10233,7 +10254,7 @@ $(OBJS)\odbcdll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(ODBCDLL_CXXFLAGS) -H $**
 
 $(OBJS)\odbcdll_version.res: ..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_odbc_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_odbc_bcc$(VENDORTAG) $**
 
 $(OBJS)\odbcdll_db.obj: ..\..\src\common\db.cpp
 	$(CXX) -q -c -P -o$@ $(ODBCDLL_CXXFLAGS) $**
@@ -10254,7 +10275,7 @@ $(OBJS)\dbgriddll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(DBGRIDDLL_CXXFLAGS) -H $**
 
 $(OBJS)\dbgriddll_version.res: ..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_dbgrid_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_dbgrid_bcc$(VENDORTAG) $**
 
 $(OBJS)\dbgriddll_dbgrid.obj: ..\..\src\common\dbgrid.cpp
 	$(CXX) -q -c -P -o$@ $(DBGRIDDLL_CXXFLAGS) $**
@@ -10269,7 +10290,7 @@ $(OBJS)\htmldll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(HTMLDLL_CXXFLAGS) -H $**
 
 $(OBJS)\htmldll_version.res: ..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_html_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_html_bcc$(VENDORTAG) $**
 
 $(OBJS)\htmldll_helpbest.obj: ..\..\src\msw\helpbest.cpp
 	$(CXX) -q -c -P -o$@ $(HTMLDLL_CXXFLAGS) $**
@@ -10410,7 +10431,7 @@ $(OBJS)\qadll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(QADLL_CXXFLAGS) -H $**
 
 $(OBJS)\qadll_version.res: ..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_qa_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_qa_bcc$(VENDORTAG) $**
 
 $(OBJS)\qadll_debugrpt.obj: ..\..\src\common\debugrpt.cpp
 	$(CXX) -q -c -P -o$@ $(QADLL_CXXFLAGS) $**
@@ -10431,7 +10452,7 @@ $(OBJS)\xmldll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(XMLDLL_CXXFLAGS) -H $**
 
 $(OBJS)\xmldll_version.res: ..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xml_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xml_bcc$(VENDORTAG) $**
 
 $(OBJS)\xmldll_xml.obj: ..\..\src\xml\xml.cpp
 	$(CXX) -q -c -P -o$@ $(XMLDLL_CXXFLAGS) $**
@@ -10452,7 +10473,7 @@ $(OBJS)\xrcdll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(XRCDLL_CXXFLAGS) -H $**
 
 $(OBJS)\xrcdll_version.res: ..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xrc_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xrc_bcc$(VENDORTAG) $**
 
 $(OBJS)\xrcdll_xh_bmpbt.obj: ..\..\src\xrc\xh_bmpbt.cpp
 	$(CXX) -q -c -P -o$@ $(XRCDLL_CXXFLAGS) $**
@@ -10719,7 +10740,7 @@ $(OBJS)\gldll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(GLDLL_CXXFLAGS) -H $**
 
 $(OBJS)\gldll_version.res: ..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gl_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) -i..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gl_bcc$(VENDORTAG) $**
 
 $(OBJS)\gldll_glcanvas.obj: ..\..\src\msw\glcanvas.cpp
 	$(CXX) -q -c -P -o$@ $(GLDLL_CXXFLAGS) $**
diff --git a/build/msw/makefile.gcc b/build/msw/makefile.gcc
index 0ea15054d4..1c6cd2c40f 100644
--- a/build/msw/makefile.gcc
+++ b/build/msw/makefile.gcc
@@ -170,18 +170,18 @@ WXEXPAT_OBJECTS =  \
 MONODLL_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_BASE=1 -DWXMAKINGDLL \
 	$(CPPFLAGS) $(CFLAGS)
 MONODLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_BASE=1 -DWXMAKINGDLL \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -W -Wall -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_BASE=1 -DWXMAKINGDLL $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 MONODLL_OBJECTS =  \
 	$(OBJS)\monodll_dummy.o \
 	$(OBJS)\monodll_version_rc.o \
@@ -280,16 +280,17 @@ MONODLL_OBJECTS =  \
 MONOLIB_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
 MONOLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_BASE=1 $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -W -Wall -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_BASE=1 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 MONOLIB_OBJECTS =  \
 	$(OBJS)\monolib_dummy.o \
 	$(OBJS)\monolib_appbase.o \
@@ -387,18 +388,18 @@ MONOLIB_OBJECTS =  \
 BASEDLL_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DWXMAKINGDLL_BASE \
 	-DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
 BASEDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DWXMAKINGDLL_BASE \
-	-DwxUSE_BASE=1 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -W -Wall -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_GUI=0 -DWXMAKINGDLL_BASE -DwxUSE_BASE=1 $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 BASEDLL_OBJECTS =  \
 	$(OBJS)\basedll_dummy.o \
 	$(OBJS)\basedll_version_rc.o \
@@ -482,18 +483,18 @@ BASEDLL_OBJECTS =  \
 BASELIB_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DwxUSE_BASE=1 \
 	$(CPPFLAGS) $(CFLAGS)
 BASELIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DwxUSE_BASE=1 \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -W -Wall -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_GUI=0 -DwxUSE_BASE=1 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 BASELIB_OBJECTS =  \
 	$(OBJS)\baselib_dummy.o \
 	$(OBJS)\baselib_appbase.o \
@@ -576,8 +577,8 @@ BASELIB_OBJECTS =  \
 NETDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DWXUSINGDLL \
 	-DWXMAKINGDLL_NET $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -599,8 +600,8 @@ NETDLL_OBJECTS =  \
 NETLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 NETLIB_OBJECTS =  \
@@ -620,11 +621,11 @@ NETLIB_OBJECTS =  \
 COREDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_CORE \
-	-DwxUSE_BASE=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -W -Wall -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DWXUSINGDLL -DWXMAKINGDLL_CORE -DwxUSE_BASE=0 $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 COREDLL_OBJECTS =  \
 	$(OBJS)\coredll_dummy.o \
 	$(OBJS)\coredll_version_rc.o \
@@ -639,10 +640,11 @@ COREDLL_OBJECTS =  \
 CORELIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_BASE=0 $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -W -Wall -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_BASE=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 CORELIB_OBJECTS =  \
 	$(OBJS)\corelib_dummy.o \
 	$(OBJS)\corelib_event.o \
@@ -656,8 +658,8 @@ CORELIB_OBJECTS =  \
 ADVDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_ADV \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
 	$(CXXFLAGS)
@@ -668,8 +670,8 @@ ADVDLL_OBJECTS =  \
 ADVLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 ADVLIB_OBJECTS =  \
@@ -678,11 +680,11 @@ ADVLIB_OBJECTS =  \
 MEDIADLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_MEDIA \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -W -Wall -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DWXUSINGDLL -DWXMAKINGDLL_MEDIA $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 MEDIADLL_OBJECTS =  \
 	$(OBJS)\mediadll_dummy.o \
 	$(OBJS)\mediadll_version_rc.o \
@@ -691,10 +693,11 @@ MEDIADLL_OBJECTS =  \
 MEDIALIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -W -Wall -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 MEDIALIB_OBJECTS =  \
 	$(OBJS)\medialib_dummy.o \
 	$(OBJS)\medialib_mediactrlcmn.o \
@@ -702,11 +705,11 @@ MEDIALIB_OBJECTS =  \
 ODBCDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DWXUSINGDLL \
-	-DWXMAKINGDLL_ODBC $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -W -Wall -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_GUI=0 -DWXUSINGDLL -DWXMAKINGDLL_ODBC $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 ODBCDLL_OBJECTS =  \
 	$(OBJS)\odbcdll_dummy.o \
 	$(OBJS)\odbcdll_version_rc.o \
@@ -715,10 +718,11 @@ ODBCDLL_OBJECTS =  \
 ODBCLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -W -Wall -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DwxUSE_GUI=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 ODBCLIB_OBJECTS =  \
 	$(OBJS)\odbclib_dummy.o \
 	$(OBJS)\odbclib_db.o \
@@ -726,11 +730,11 @@ ODBCLIB_OBJECTS =  \
 DBGRIDDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_DBGRID \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -W -Wall -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DWXUSINGDLL -DWXMAKINGDLL_DBGRID $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 DBGRIDDLL_OBJECTS =  \
 	$(OBJS)\dbgriddll_dummy.o \
 	$(OBJS)\dbgriddll_version_rc.o \
@@ -738,21 +742,22 @@ DBGRIDDLL_OBJECTS =  \
 DBGRIDLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -W -Wall -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 DBGRIDLIB_OBJECTS =  \
 	$(OBJS)\dbgridlib_dummy.o \
 	$(OBJS)\dbgridlib_dbgrid.o
 HTMLDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_HTML \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -W -Wall -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	-DWXUSINGDLL -DWXMAKINGDLL_HTML $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 HTMLDLL_OBJECTS =  \
 	$(OBJS)\htmldll_dummy.o \
 	$(OBJS)\htmldll_version_rc.o \
@@ -781,10 +786,11 @@ HTMLDLL_OBJECTS =  \
 HTMLLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
-	-I..\..\src\regex -I..\..\src\expat\lib $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\include -I$(SETUPHDIR) -W -Wall -I..\..\src\tiff -I..\..\src\jpeg \
+	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\lib \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 HTMLLIB_OBJECTS =  \
 	$(OBJS)\htmllib_dummy.o \
 	$(OBJS)\htmllib_helpbest.o \
@@ -812,8 +818,8 @@ HTMLLIB_OBJECTS =  \
 QADLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_QA \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
 	$(CXXFLAGS)
@@ -825,8 +831,8 @@ QADLL_OBJECTS =  \
 QALIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 QALIB_OBJECTS =  \
@@ -836,8 +842,8 @@ QALIB_OBJECTS =  \
 XMLDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 -DWXUSINGDLL \
 	-DWXMAKINGDLL_XML $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -849,8 +855,8 @@ XMLDLL_OBJECTS =  \
 XMLLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib -DwxUSE_GUI=0 $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 XMLLIB_OBJECTS =  \
@@ -860,8 +866,8 @@ XMLLIB_OBJECTS =  \
 XRCDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_XRC \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
 	$(CXXFLAGS)
@@ -914,8 +920,8 @@ XRCDLL_OBJECTS =  \
 XRCLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 XRCLIB_OBJECTS =  \
@@ -966,8 +972,8 @@ XRCLIB_OBJECTS =  \
 GLDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib -DWXUSINGDLL -DWXMAKINGDLL_GL \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
 	$(CXXFLAGS)
@@ -978,8 +984,8 @@ GLDLL_OBJECTS =  \
 GLLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W -Wall \
-	-I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I..\..\src\tiff -I..\..\src\jpeg -I..\..\src\png -I..\..\src\zlib \
 	-I..\..\src\regex -I..\..\src\expat\lib $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 GLLIB_OBJECTS =  \
@@ -3171,6 +3177,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_50 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_49 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(USE_GUI),1)
 __LIB_TIFF_p = -lwxtiff$(WXDEBUGFLAG)
 endif
@@ -3246,6 +3255,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(WXUNIV),0)
 __SETUP_H_SUBDIR_FILENAMES = msw
 endif
@@ -4010,7 +4022,7 @@ $(OBJS)\monodll_dummy.o: ../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(MONODLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\monodll_version_rc.o: ../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gcc$(VENDORTAG)
 
 $(OBJS)\monodll_appbase.o: ../../src/common/appbase.cpp
 	$(CXX) -c -o $@ $(MONODLL_CXXFLAGS) $(CPPDEPS) $<
@@ -7583,7 +7595,7 @@ $(OBJS)\basedll_dummy.o: ../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(BASEDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\basedll_version_rc.o: ../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gcc$(VENDORTAG)
 
 $(OBJS)\basedll_appbase.o: ../../src/common/appbase.cpp
 	$(CXX) -c -o $@ $(BASEDLL_CXXFLAGS) $(CPPDEPS) $<
@@ -8054,7 +8066,7 @@ $(OBJS)\netdll_dummy.o: ../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(NETDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\netdll_version_rc.o: ../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_net_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_net_gcc$(VENDORTAG)
 
 $(OBJS)\netdll_fs_inet.o: ../../src/common/fs_inet.cpp
 	$(CXX) -c -o $@ $(NETDLL_CXXFLAGS) $(CPPDEPS) $<
@@ -8135,7 +8147,7 @@ $(OBJS)\coredll_dummy.o: ../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(COREDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\coredll_version_rc.o: ../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_core_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_core_gcc$(VENDORTAG)
 
 $(OBJS)\coredll_event.o: ../../src/common/event.cpp
 	$(CXX) -c -o $@ $(COREDLL_CXXFLAGS) $(CPPDEPS) $<
@@ -10606,7 +10618,7 @@ $(OBJS)\advdll_dummy.o: ../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(ADVDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\advdll_version_rc.o: ../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_adv_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_adv_gcc$(VENDORTAG)
 
 $(OBJS)\advdll_datectrl.o: ../../src/msw/datectrl.cpp
 	$(CXX) -c -o $@ $(ADVDLL_CXXFLAGS) $(CPPDEPS) $<
@@ -10717,7 +10729,7 @@ $(OBJS)\mediadll_dummy.o: ../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(MEDIADLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\mediadll_version_rc.o: ../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_media_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_media_gcc$(VENDORTAG)
 
 $(OBJS)\mediadll_mediactrlcmn.o: ../../src/common/mediactrlcmn.cpp
 	$(CXX) -c -o $@ $(MEDIADLL_CXXFLAGS) $(CPPDEPS) $<
@@ -10738,7 +10750,7 @@ $(OBJS)\odbcdll_dummy.o: ../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(ODBCDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\odbcdll_version_rc.o: ../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_odbc_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_odbc_gcc$(VENDORTAG)
 
 $(OBJS)\odbcdll_db.o: ../../src/common/db.cpp
 	$(CXX) -c -o $@ $(ODBCDLL_CXXFLAGS) $(CPPDEPS) $<
@@ -10759,7 +10771,7 @@ $(OBJS)\dbgriddll_dummy.o: ../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(DBGRIDDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\dbgriddll_version_rc.o: ../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_dbgrid_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_dbgrid_gcc$(VENDORTAG)
 
 $(OBJS)\dbgriddll_dbgrid.o: ../../src/common/dbgrid.cpp
 	$(CXX) -c -o $@ $(DBGRIDDLL_CXXFLAGS) $(CPPDEPS) $<
@@ -10774,7 +10786,7 @@ $(OBJS)\htmldll_dummy.o: ../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(HTMLDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\htmldll_version_rc.o: ../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_html_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_html_gcc$(VENDORTAG)
 
 $(OBJS)\htmldll_helpbest.o: ../../src/msw/helpbest.cpp
 	$(CXX) -c -o $@ $(HTMLDLL_CXXFLAGS) $(CPPDEPS) $<
@@ -10915,7 +10927,7 @@ $(OBJS)\qadll_dummy.o: ../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(QADLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\qadll_version_rc.o: ../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_qa_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_qa_gcc$(VENDORTAG)
 
 $(OBJS)\qadll_debugrpt.o: ../../src/common/debugrpt.cpp
 	$(CXX) -c -o $@ $(QADLL_CXXFLAGS) $(CPPDEPS) $<
@@ -10936,7 +10948,7 @@ $(OBJS)\xmldll_dummy.o: ../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(XMLDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\xmldll_version_rc.o: ../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xml_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xml_gcc$(VENDORTAG)
 
 $(OBJS)\xmldll_xml.o: ../../src/xml/xml.cpp
 	$(CXX) -c -o $@ $(XMLDLL_CXXFLAGS) $(CPPDEPS) $<
@@ -10957,7 +10969,7 @@ $(OBJS)\xrcdll_dummy.o: ../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(XRCDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\xrcdll_version_rc.o: ../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xrc_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xrc_gcc$(VENDORTAG)
 
 $(OBJS)\xrcdll_xh_bmpbt.o: ../../src/xrc/xh_bmpbt.cpp
 	$(CXX) -c -o $@ $(XRCDLL_CXXFLAGS) $(CPPDEPS) $<
@@ -11224,7 +11236,7 @@ $(OBJS)\gldll_dummy.o: ../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(GLDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\gldll_version_rc.o: ../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gl_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) --include-dir ..\../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gl_gcc$(VENDORTAG)
 
 $(OBJS)\gldll_glcanvas.o: ../../src/msw/glcanvas.cpp
 	$(CXX) -c -o $@ $(GLDLL_CXXFLAGS) $(CPPDEPS) $<
diff --git a/build/msw/makefile.vc b/build/msw/makefile.vc
index 4f8a67eb20..00c62b7a72 100644
--- a/build/msw/makefile.vc
+++ b/build/msw/makefile.vc
@@ -181,19 +181,20 @@ MONODLL_CFLAGS = /M$(__RUNTIME_LIBS_87)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_BASE=1 /DWXMAKINGDLL $(CPPFLAGS) $(CFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_BASE=1 /DWXMAKINGDLL $(CPPFLAGS) $(CFLAGS)
 MONODLL_CXXFLAGS = /M$(__RUNTIME_LIBS_87)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) \
 	/Fd$(LIBDIRNAME)\wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_vc$(VENDORTAG).pdb \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_BASE=1 /DWXMAKINGDLL $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_monodll.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_BASE=1 /DWXMAKINGDLL $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_monodll.pch" \
+	$(CPPFLAGS) $(CXXFLAGS)
 MONODLL_OBJECTS =  \
 	$(OBJS)\monodll_dummy.obj \
 	$(OBJS)\monodll_version.res \
@@ -295,19 +296,19 @@ MONOLIB_CFLAGS = /M$(__RUNTIME_LIBS_100)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
 MONOLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_100)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) \
 	/Fd$(LIBDIRNAME)\wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).pdb \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_BASE=1 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
-	/Fp"$(OBJS)\wxprec_monolib.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_BASE=1 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_monolib.pch" $(CPPFLAGS) $(CXXFLAGS)
 MONOLIB_OBJECTS =  \
 	$(OBJS)\monolib_dummy.obj \
 	$(OBJS)\monolib_appbase.obj \
@@ -408,20 +409,21 @@ BASEDLL_CFLAGS = /M$(__RUNTIME_LIBS_114)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_GUI=0 /DWXMAKINGDLL_BASE /DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_GUI=0 /DWXMAKINGDLL_BASE /DwxUSE_BASE=1 \
+	$(CPPFLAGS) $(CFLAGS)
 BASEDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_114)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) \
 	/Fd$(LIBDIRNAME)\wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_vc$(VENDORTAG).pdb \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_GUI=0 /DWXMAKINGDLL_BASE /DwxUSE_BASE=1 $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_basedll.pch" \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_GUI=0 /DWXMAKINGDLL_BASE /DwxUSE_BASE=1 \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
+	/Fp"$(OBJS)\wxprec_basedll.pch" $(CPPFLAGS) $(CXXFLAGS)
 BASEDLL_OBJECTS =  \
 	$(OBJS)\basedll_dummy.obj \
 	$(OBJS)\basedll_version.res \
@@ -508,19 +510,20 @@ BASELIB_CFLAGS = /M$(__RUNTIME_LIBS_127)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_GUI=0 /DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_GUI=0 /DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
 BASELIB_CXXFLAGS = /M$(__RUNTIME_LIBS_127)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) \
 	/Fd$(LIBDIRNAME)\wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).pdb \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_GUI=0 /DwxUSE_BASE=1 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_baselib.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_GUI=0 /DwxUSE_BASE=1 $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_baselib.pch" \
+	$(CPPFLAGS) $(CXXFLAGS)
 BASELIB_OBJECTS =  \
 	$(OBJS)\baselib_dummy.obj \
 	$(OBJS)\baselib_appbase.obj \
@@ -606,11 +609,11 @@ NETDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_141)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_GUI=0 /DWXUSINGDLL /DWXMAKINGDLL_NET $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_netdll.pch" \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_GUI=0 /DWXUSINGDLL /DWXMAKINGDLL_NET \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
+	/Fp"$(OBJS)\wxprec_netdll.pch" $(CPPFLAGS) $(CXXFLAGS)
 NETDLL_OBJECTS =  \
 	$(OBJS)\netdll_dummy.obj \
 	$(OBJS)\netdll_version.res \
@@ -632,10 +635,10 @@ NETLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_154)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_GUI=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
-	/Fp"$(OBJS)\wxprec_netlib.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_GUI=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_netlib.pch" $(CPPFLAGS) $(CXXFLAGS)
 NETLIB_OBJECTS =  \
 	$(OBJS)\netlib_dummy.obj \
 	$(OBJS)\netlib_fs_inet.obj \
@@ -656,11 +659,11 @@ COREDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_168)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DWXUSINGDLL /DWXMAKINGDLL_CORE /DwxUSE_BASE=0 $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_coredll.pch" \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DWXUSINGDLL /DWXMAKINGDLL_CORE /DwxUSE_BASE=0 \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
+	/Fp"$(OBJS)\wxprec_coredll.pch" $(CPPFLAGS) $(CXXFLAGS)
 COREDLL_OBJECTS =  \
 	$(OBJS)\coredll_dummy.obj \
 	$(OBJS)\coredll_version.res \
@@ -678,10 +681,10 @@ CORELIB_CXXFLAGS = /M$(__RUNTIME_LIBS_181)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_BASE=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
-	/Fp"$(OBJS)\wxprec_corelib.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_BASE=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_corelib.pch" $(CPPFLAGS) $(CXXFLAGS)
 CORELIB_OBJECTS =  \
 	$(OBJS)\corelib_dummy.obj \
 	$(OBJS)\corelib_event.obj \
@@ -698,10 +701,11 @@ ADVDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_195)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DWXUSINGDLL /DWXMAKINGDLL_ADV $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_advdll.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DWXUSINGDLL /DWXMAKINGDLL_ADV $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_advdll.pch" \
+	$(CPPFLAGS) $(CXXFLAGS)
 ADVDLL_OBJECTS =  \
 	$(OBJS)\advdll_dummy.obj \
 	$(OBJS)\advdll_version.res \
@@ -712,9 +716,9 @@ ADVLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_208)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib $(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
 	/Fp"$(OBJS)\wxprec_advlib.pch" $(CPPFLAGS) $(CXXFLAGS)
 ADVLIB_OBJECTS =  \
 	$(OBJS)\advlib_dummy.obj \
@@ -725,10 +729,11 @@ MEDIADLL_CXXFLAGS = /M$(__RUNTIME_LIBS_222)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DWXUSINGDLL /DWXMAKINGDLL_MEDIA $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_mediadll.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DWXUSINGDLL /DWXMAKINGDLL_MEDIA $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_mediadll.pch" \
+	$(CPPFLAGS) $(CXXFLAGS)
 MEDIADLL_OBJECTS =  \
 	$(OBJS)\mediadll_dummy.obj \
 	$(OBJS)\mediadll_version.res \
@@ -740,9 +745,9 @@ MEDIALIB_CXXFLAGS = /M$(__RUNTIME_LIBS_235)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib $(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
 	/Fp"$(OBJS)\wxprec_medialib.pch" $(CPPFLAGS) $(CXXFLAGS)
 MEDIALIB_OBJECTS =  \
 	$(OBJS)\medialib_dummy.obj \
@@ -754,11 +759,11 @@ ODBCDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_249)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_GUI=0 /DWXUSINGDLL /DWXMAKINGDLL_ODBC $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_odbcdll.pch" \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_GUI=0 /DWXUSINGDLL /DWXMAKINGDLL_ODBC \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
+	/Fp"$(OBJS)\wxprec_odbcdll.pch" $(CPPFLAGS) $(CXXFLAGS)
 ODBCDLL_OBJECTS =  \
 	$(OBJS)\odbcdll_dummy.obj \
 	$(OBJS)\odbcdll_version.res \
@@ -770,10 +775,10 @@ ODBCLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_262)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_GUI=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
-	/Fp"$(OBJS)\wxprec_odbclib.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_GUI=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_odbclib.pch" $(CPPFLAGS) $(CXXFLAGS)
 ODBCLIB_OBJECTS =  \
 	$(OBJS)\odbclib_dummy.obj \
 	$(OBJS)\odbclib_db.obj \
@@ -784,10 +789,11 @@ DBGRIDDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_276)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DWXUSINGDLL /DWXMAKINGDLL_DBGRID $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_dbgriddll.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DWXUSINGDLL /DWXMAKINGDLL_DBGRID $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_dbgriddll.pch" \
+	$(CPPFLAGS) $(CXXFLAGS)
 DBGRIDDLL_OBJECTS =  \
 	$(OBJS)\dbgriddll_dummy.obj \
 	$(OBJS)\dbgriddll_version.res \
@@ -798,9 +804,9 @@ DBGRIDLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_289)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib $(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
 	/Fp"$(OBJS)\wxprec_dbgridlib.pch" $(CPPFLAGS) $(CXXFLAGS)
 DBGRIDLIB_OBJECTS =  \
 	$(OBJS)\dbgridlib_dummy.obj \
@@ -811,10 +817,11 @@ HTMLDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_303)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DWXUSINGDLL /DWXMAKINGDLL_HTML $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_htmldll.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DWXUSINGDLL /DWXMAKINGDLL_HTML $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_htmldll.pch" \
+	$(CPPFLAGS) $(CXXFLAGS)
 HTMLDLL_OBJECTS =  \
 	$(OBJS)\htmldll_dummy.obj \
 	$(OBJS)\htmldll_version.res \
@@ -846,9 +853,9 @@ HTMLLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_316)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib $(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
 	/Fp"$(OBJS)\wxprec_htmllib.pch" $(CPPFLAGS) $(CXXFLAGS)
 HTMLLIB_OBJECTS =  \
 	$(OBJS)\htmllib_dummy.obj \
@@ -880,10 +887,11 @@ QADLL_CXXFLAGS = /M$(__RUNTIME_LIBS_330)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DWXUSINGDLL /DWXMAKINGDLL_QA $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_qadll.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DWXUSINGDLL /DWXMAKINGDLL_QA $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_qadll.pch" \
+	$(CPPFLAGS) $(CXXFLAGS)
 QADLL_OBJECTS =  \
 	$(OBJS)\qadll_dummy.obj \
 	$(OBJS)\qadll_version.res \
@@ -895,9 +903,9 @@ QALIB_CXXFLAGS = /M$(__RUNTIME_LIBS_343)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib $(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
 	/Fp"$(OBJS)\wxprec_qalib.pch" $(CPPFLAGS) $(CXXFLAGS)
 QALIB_OBJECTS =  \
 	$(OBJS)\qalib_dummy.obj \
@@ -909,11 +917,11 @@ XMLDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_357)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_GUI=0 /DWXUSINGDLL /DWXMAKINGDLL_XML $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_xmldll.pch" \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_GUI=0 /DWXUSINGDLL /DWXMAKINGDLL_XML \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
+	/Fp"$(OBJS)\wxprec_xmldll.pch" $(CPPFLAGS) $(CXXFLAGS)
 XMLDLL_OBJECTS =  \
 	$(OBJS)\xmldll_dummy.obj \
 	$(OBJS)\xmldll_version.res \
@@ -925,10 +933,10 @@ XMLLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_370)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DwxUSE_GUI=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
-	/Fp"$(OBJS)\wxprec_xmllib.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DwxUSE_GUI=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_xmllib.pch" $(CPPFLAGS) $(CXXFLAGS)
 XMLLIB_OBJECTS =  \
 	$(OBJS)\xmllib_dummy.obj \
 	$(OBJS)\xmllib_xml.obj \
@@ -939,10 +947,11 @@ XRCDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_384)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DWXUSINGDLL /DWXMAKINGDLL_XRC $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_xrcdll.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DWXUSINGDLL /DWXMAKINGDLL_XRC $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_xrcdll.pch" \
+	$(CPPFLAGS) $(CXXFLAGS)
 XRCDLL_OBJECTS =  \
 	$(OBJS)\xrcdll_dummy.obj \
 	$(OBJS)\xrcdll_version.res \
@@ -995,9 +1004,9 @@ XRCLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_397)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib $(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
 	/Fp"$(OBJS)\wxprec_xrclib.pch" $(CPPFLAGS) $(CXXFLAGS)
 XRCLIB_OBJECTS =  \
 	$(OBJS)\xrclib_dummy.obj \
@@ -1050,10 +1059,11 @@ GLDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_411)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	/DWXUSINGDLL /DWXMAKINGDLL_GL $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_gldll.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib /DWXUSINGDLL /DWXMAKINGDLL_GL $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_gldll.pch" \
+	$(CPPFLAGS) $(CXXFLAGS)
 GLDLL_OBJECTS =  \
 	$(OBJS)\gldll_dummy.obj \
 	$(OBJS)\gldll_version.res \
@@ -1064,9 +1074,9 @@ GLLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_424)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff /I..\..\src\jpeg \
-	/I..\..\src\png /I..\..\src\zlib /I..\..\src\regex /I..\..\src\expat\lib \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
+	$(__MSLU_DEFINE_p) /I..\..\include /I$(SETUPHDIR) /W4 /I..\..\src\tiff \
+	/I..\..\src\jpeg /I..\..\src\png /I..\..\src\zlib /I..\..\src\regex \
+	/I..\..\src\expat\lib $(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
 	/Fp"$(OBJS)\wxprec_gllib.pch" $(CPPFLAGS) $(CXXFLAGS)
 GLLIB_OBJECTS =  \
 	$(OBJS)\gllib_dummy.obj \
@@ -3356,6 +3366,9 @@ __THREAD_DEFINE_p_49 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_50 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_49 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(USE_GUI)" == "1"
 __LIB_TIFF_p = wxtiff$(WXDEBUGFLAG).lib
 !endif
@@ -3455,6 +3468,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(WXUNIV)" == "0"
 __SETUP_H_SUBDIR_FILENAMES = msw
 !endif
@@ -4195,7 +4211,7 @@ $(OBJS)\monodll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MONODLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\monodll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_vc$(VENDORTAG) $**
 
 $(OBJS)\monodll_appbase.obj: ..\..\src\common\appbase.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MONODLL_CXXFLAGS) $**
@@ -7568,7 +7584,7 @@ $(OBJS)\basedll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(BASEDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\basedll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_vc$(VENDORTAG) $**
 
 $(OBJS)\basedll_appbase.obj: ..\..\src\common\appbase.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(BASEDLL_CXXFLAGS) $**
@@ -8039,7 +8055,7 @@ $(OBJS)\netdll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(NETDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\netdll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_net_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_net_vc$(VENDORTAG) $**
 
 $(OBJS)\netdll_fs_inet.obj: ..\..\src\common\fs_inet.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(NETDLL_CXXFLAGS) $**
@@ -8120,7 +8136,7 @@ $(OBJS)\coredll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(COREDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\coredll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_core_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_core_vc$(VENDORTAG) $**
 
 $(OBJS)\coredll_event.obj: ..\..\src\common\event.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(COREDLL_CXXFLAGS) $**
@@ -10391,7 +10407,7 @@ $(OBJS)\advdll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(ADVDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\advdll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_adv_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_adv_vc$(VENDORTAG) $**
 
 $(OBJS)\advdll_datectrl.obj: ..\..\src\msw\datectrl.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(ADVDLL_CXXFLAGS) $**
@@ -10502,7 +10518,7 @@ $(OBJS)\mediadll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MEDIADLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\mediadll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_media_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_media_vc$(VENDORTAG) $**
 
 $(OBJS)\mediadll_mediactrlcmn.obj: ..\..\src\common\mediactrlcmn.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MEDIADLL_CXXFLAGS) $**
@@ -10523,7 +10539,7 @@ $(OBJS)\odbcdll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(ODBCDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\odbcdll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_odbc_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_odbc_vc$(VENDORTAG) $**
 
 $(OBJS)\odbcdll_db.obj: ..\..\src\common\db.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(ODBCDLL_CXXFLAGS) $**
@@ -10544,7 +10560,7 @@ $(OBJS)\dbgriddll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DBGRIDDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\dbgriddll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_dbgrid_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_dbgrid_vc$(VENDORTAG) $**
 
 $(OBJS)\dbgriddll_dbgrid.obj: ..\..\src\common\dbgrid.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DBGRIDDLL_CXXFLAGS) $**
@@ -10559,7 +10575,7 @@ $(OBJS)\htmldll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(HTMLDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\htmldll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_html_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_html_vc$(VENDORTAG) $**
 
 $(OBJS)\htmldll_helpbest.obj: ..\..\src\msw\helpbest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(HTMLDLL_CXXFLAGS) $**
@@ -10700,7 +10716,7 @@ $(OBJS)\qadll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(QADLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\qadll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_qa_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_qa_vc$(VENDORTAG) $**
 
 $(OBJS)\qadll_debugrpt.obj: ..\..\src\common\debugrpt.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(QADLL_CXXFLAGS) $**
@@ -10721,7 +10737,7 @@ $(OBJS)\xmldll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(XMLDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\xmldll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xml_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xml_vc$(VENDORTAG) $**
 
 $(OBJS)\xmldll_xml.obj: ..\..\src\xml\xml.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(XMLDLL_CXXFLAGS) $**
@@ -10742,7 +10758,7 @@ $(OBJS)\xrcdll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(XRCDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\xrcdll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xrc_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xrc_vc$(VENDORTAG) $**
 
 $(OBJS)\xrcdll_xh_bmpbt.obj: ..\..\src\xrc\xh_bmpbt.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(XRCDLL_CXXFLAGS) $**
@@ -11009,7 +11025,7 @@ $(OBJS)\gldll_dummy.obj: ..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(GLDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\gldll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gl_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_4) $(__NO_VC_CRTDBG_p_55)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_49) $(__DEBUG_DEFINE_p_49) $(__EXCEPTIONS_DEFINE_p_49) $(__RTTI_DEFINE_p_49) $(__THREAD_DEFINE_p_49) $(__UNICODE_DEFINE_p_50) $(__MSLU_DEFINE_p_49) /i ..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gl_vc$(VENDORTAG) $**
 
 $(OBJS)\gldll_glcanvas.obj: ..\..\src\msw\glcanvas.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(GLDLL_CXXFLAGS) $**
diff --git a/build/msw/makefile.wat b/build/msw/makefile.wat
index d1cc773f70..92b2165273 100644
--- a/build/msw/makefile.wat
+++ b/build/msw/makefile.wat
@@ -4221,7 +4221,7 @@ $(OBJS)\monodll_dummy.obj :  .AUTODEPEND ..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(MONODLL_CXXFLAGS) $<
 
 $(OBJS)\monodll_version.res :  .AUTODEPEND ..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_wat$(VENDORTAG) $<
 
 $(OBJS)\monodll_appbase.obj :  .AUTODEPEND ..\..\src\common\appbase.cpp
 	$(CXX) -zq -fo=$^@ $(MONODLL_CXXFLAGS) $<
@@ -7794,7 +7794,7 @@ $(OBJS)\basedll_dummy.obj :  .AUTODEPEND ..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(BASEDLL_CXXFLAGS) $<
 
 $(OBJS)\basedll_version.res :  .AUTODEPEND ..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_wat$(VENDORTAG) $<
 
 $(OBJS)\basedll_appbase.obj :  .AUTODEPEND ..\..\src\common\appbase.cpp
 	$(CXX) -zq -fo=$^@ $(BASEDLL_CXXFLAGS) $<
@@ -8265,7 +8265,7 @@ $(OBJS)\netdll_dummy.obj :  .AUTODEPEND ..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(NETDLL_CXXFLAGS) $<
 
 $(OBJS)\netdll_version.res :  .AUTODEPEND ..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_net_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_net_wat$(VENDORTAG) $<
 
 $(OBJS)\netdll_fs_inet.obj :  .AUTODEPEND ..\..\src\common\fs_inet.cpp
 	$(CXX) -zq -fo=$^@ $(NETDLL_CXXFLAGS) $<
@@ -8346,7 +8346,7 @@ $(OBJS)\coredll_dummy.obj :  .AUTODEPEND ..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(COREDLL_CXXFLAGS) $<
 
 $(OBJS)\coredll_version.res :  .AUTODEPEND ..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_core_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_core_wat$(VENDORTAG) $<
 
 $(OBJS)\coredll_event.obj :  .AUTODEPEND ..\..\src\common\event.cpp
 	$(CXX) -zq -fo=$^@ $(COREDLL_CXXFLAGS) $<
@@ -10817,7 +10817,7 @@ $(OBJS)\advdll_dummy.obj :  .AUTODEPEND ..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(ADVDLL_CXXFLAGS) $<
 
 $(OBJS)\advdll_version.res :  .AUTODEPEND ..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_adv_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_adv_wat$(VENDORTAG) $<
 
 $(OBJS)\advdll_datectrl.obj :  .AUTODEPEND ..\..\src\msw\datectrl.cpp
 	$(CXX) -zq -fo=$^@ $(ADVDLL_CXXFLAGS) $<
@@ -10928,7 +10928,7 @@ $(OBJS)\mediadll_dummy.obj :  .AUTODEPEND ..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(MEDIADLL_CXXFLAGS) $<
 
 $(OBJS)\mediadll_version.res :  .AUTODEPEND ..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_media_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_media_wat$(VENDORTAG) $<
 
 $(OBJS)\mediadll_mediactrlcmn.obj :  .AUTODEPEND ..\..\src\common\mediactrlcmn.cpp
 	$(CXX) -zq -fo=$^@ $(MEDIADLL_CXXFLAGS) $<
@@ -10949,7 +10949,7 @@ $(OBJS)\odbcdll_dummy.obj :  .AUTODEPEND ..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(ODBCDLL_CXXFLAGS) $<
 
 $(OBJS)\odbcdll_version.res :  .AUTODEPEND ..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_odbc_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_odbc_wat$(VENDORTAG) $<
 
 $(OBJS)\odbcdll_db.obj :  .AUTODEPEND ..\..\src\common\db.cpp
 	$(CXX) -zq -fo=$^@ $(ODBCDLL_CXXFLAGS) $<
@@ -10970,7 +10970,7 @@ $(OBJS)\dbgriddll_dummy.obj :  .AUTODEPEND ..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(DBGRIDDLL_CXXFLAGS) $<
 
 $(OBJS)\dbgriddll_version.res :  .AUTODEPEND ..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_dbgrid_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_dbgrid_wat$(VENDORTAG) $<
 
 $(OBJS)\dbgriddll_dbgrid.obj :  .AUTODEPEND ..\..\src\common\dbgrid.cpp
 	$(CXX) -zq -fo=$^@ $(DBGRIDDLL_CXXFLAGS) $<
@@ -10985,7 +10985,7 @@ $(OBJS)\htmldll_dummy.obj :  .AUTODEPEND ..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(HTMLDLL_CXXFLAGS) $<
 
 $(OBJS)\htmldll_version.res :  .AUTODEPEND ..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_html_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_html_wat$(VENDORTAG) $<
 
 $(OBJS)\htmldll_helpbest.obj :  .AUTODEPEND ..\..\src\msw\helpbest.cpp
 	$(CXX) -zq -fo=$^@ $(HTMLDLL_CXXFLAGS) $<
@@ -11126,7 +11126,7 @@ $(OBJS)\qadll_dummy.obj :  .AUTODEPEND ..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(QADLL_CXXFLAGS) $<
 
 $(OBJS)\qadll_version.res :  .AUTODEPEND ..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_qa_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_qa_wat$(VENDORTAG) $<
 
 $(OBJS)\qadll_debugrpt.obj :  .AUTODEPEND ..\..\src\common\debugrpt.cpp
 	$(CXX) -zq -fo=$^@ $(QADLL_CXXFLAGS) $<
@@ -11147,7 +11147,7 @@ $(OBJS)\xmldll_dummy.obj :  .AUTODEPEND ..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(XMLDLL_CXXFLAGS) $<
 
 $(OBJS)\xmldll_version.res :  .AUTODEPEND ..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xml_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wxbase$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xml_wat$(VENDORTAG) $<
 
 $(OBJS)\xmldll_xml.obj :  .AUTODEPEND ..\..\src\xml\xml.cpp
 	$(CXX) -zq -fo=$^@ $(XMLDLL_CXXFLAGS) $<
@@ -11168,7 +11168,7 @@ $(OBJS)\xrcdll_dummy.obj :  .AUTODEPEND ..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(XRCDLL_CXXFLAGS) $<
 
 $(OBJS)\xrcdll_version.res :  .AUTODEPEND ..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xrc_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_xrc_wat$(VENDORTAG) $<
 
 $(OBJS)\xrcdll_xh_bmpbt.obj :  .AUTODEPEND ..\..\src\xrc\xh_bmpbt.cpp
 	$(CXX) -zq -fo=$^@ $(XRCDLL_CXXFLAGS) $<
@@ -11435,7 +11435,7 @@ $(OBJS)\gldll_dummy.obj :  .AUTODEPEND ..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(GLDLL_CXXFLAGS) $<
 
 $(OBJS)\gldll_version.res :  .AUTODEPEND ..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gl_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gl_wat$(VENDORTAG) $<
 
 $(OBJS)\gldll_glcanvas.obj :  .AUTODEPEND ..\..\src\msw\glcanvas.cpp
 	$(CXX) -zq -fo=$^@ $(GLDLL_CXXFLAGS) $<
diff --git a/configure b/configure
index fc25546e0b..8cd8153411 100755
--- a/configure
+++ b/configure
@@ -13375,7 +13375,7 @@ fi
 
 
 
-if test "x$XLCXX" = "xyes"; then
+if test "x$XLCXX" = "xyes" -a "x$USE_AIX" = "x1"; then
     CXXFLAGS="$CXXFLAGS -qunique"
 fi
 
@@ -28624,6 +28624,74 @@ _ACEOF
                         echo "$as_me:$LINENO: result: not found" >&5
 echo "${ECHO_T}not found" >&6
 
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+        echo "$as_me:$LINENO: checking whether Motif is Lesstif" >&5
+echo $ECHO_N "checking whether Motif is Lesstif... $ECHO_C" >&6
+        cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+                        #include <Xm/Xm.h>
+
+int
+main ()
+{
+
+                        #if !defined(LesstifVersion) || LesstifVersion <= 0
+                        #error "Not Lesstif"
+                        #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+
+                        cat >>confdefs.h <<\_ACEOF
+#define __WXLESSTIF__ 1
+_ACEOF
+
+                        echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+
+                        cat >>confdefs.h <<\_ACEOF
+#define __WXLESSTIF__ 0
+_ACEOF
+
+                        echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
         CFLAGS=$save_CFLAGS
@@ -39786,10 +39854,16 @@ _ACEOF
 fi
 
 if test "$wxUSE_DATAOBJ" = "yes"; then
-    cat >>confdefs.h <<\_ACEOF
+    if test "$wxUSE_MGL" = 1; then
+        { echo "$as_me:$LINENO: WARNING: wxDataObject not yet supported under MGL... disabled" >&5
+echo "$as_me: WARNING: wxDataObject not yet supported under MGL... disabled" >&2;}
+        wxUSE_DATAOBJ=no
+    else
+        cat >>confdefs.h <<\_ACEOF
 #define wxUSE_DATAOBJ 1
 _ACEOF
 
+    fi
 else
     { echo "$as_me:$LINENO: WARNING: Clipboard and drag-and-drop require wxDataObject -- disabled" >&5
 echo "$as_me: WARNING: Clipboard and drag-and-drop require wxDataObject -- disabled" >&2;}
@@ -42500,6 +42574,7 @@ while test ${D}# -gt 0; do
        -s|-Wl,*)
         # collect these load args
         ldargs="${D}{ldargs} ${D}1"
+        ;;
 
        -l*|-L*|-flat_namespace|-headerpad_max_install_names)
         # collect these options
diff --git a/contrib/build/animate/makefile.bcc b/contrib/build/animate/makefile.bcc
index 6db4c93320..ef6bd3864b 100644
--- a/contrib/build/animate/makefile.bcc
+++ b/contrib/build/animate/makefile.bcc
@@ -30,7 +30,7 @@ SETUPHDIR = \
 ANIMATEDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\animate\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\animate\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_ANIMATE -Hu \
 	-H=$(OBJS)\wxprec_animatedll.csm $(CPPFLAGS) $(CXXFLAGS)
@@ -40,7 +40,7 @@ ANIMATEDLL_OBJECTS =  \
 ANIMATELIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\animate\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\animate\..\..\include -Hu -H=$(OBJS)\wxprec_animatelib.csm \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -126,6 +126,9 @@ __THREAD_DEFINE_p_1 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -205,6 +208,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -248,7 +254,7 @@ $(OBJS)\animatedll_dummy.obj: ../../src/animate\..\..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(ANIMATEDLL_CXXFLAGS) -H $**
 
 $(OBJS)\animatedll_version.res: ../../src/animate\..\..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i..\..\src\animate\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_animate_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i..\..\src\animate\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_animate_bcc$(VENDORTAG) $**
 
 $(OBJS)\animatedll_animate.obj: ../../src/animate\animate.cpp
 	$(CXX) -q -c -P -o$@ $(ANIMATEDLL_CXXFLAGS) $**
diff --git a/contrib/build/animate/makefile.gcc b/contrib/build/animate/makefile.gcc
index a3ff0cb362..ed5f04906c 100644
--- a/contrib/build/animate/makefile.gcc
+++ b/contrib/build/animate/makefile.gcc
@@ -22,7 +22,7 @@ SETUPHDIR = \
 ANIMATEDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\animate\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\animate\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_ANIMATE \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
@@ -34,7 +34,7 @@ ANIMATEDLL_OBJECTS =  \
 ANIMATELIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\animate\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\animate\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -115,6 +115,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(MONOLITHIC),1)
 __WXLIB_MONO_p = \
 	-lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)
@@ -206,6 +209,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 
 
 all: $(OBJS)
@@ -239,7 +245,7 @@ $(OBJS)\animatedll_dummy.o: ../../src/animate/../../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(ANIMATEDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\animatedll_version_rc.o: ../../src/animate/../../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ../../src/animate/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_animate_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ../../src/animate/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_animate_gcc$(VENDORTAG)
 
 $(OBJS)\animatedll_animate.o: ../../src/animate/animate.cpp
 	$(CXX) -c -o $@ $(ANIMATEDLL_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/build/animate/makefile.vc b/contrib/build/animate/makefile.vc
index 83b94cffd6..1729a5928d 100644
--- a/contrib/build/animate/makefile.vc
+++ b/contrib/build/animate/makefile.vc
@@ -24,7 +24,7 @@ ANIMATEDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_9)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\animate\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\animate\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\animate\..\..\include /DWXUSINGDLL /DWXMAKINGDLL_ANIMATE \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
 	/Fp"$(OBJS)\wxprec_animatedll.pch" $(CPPFLAGS) $(CXXFLAGS)
@@ -38,7 +38,7 @@ ANIMATELIB_CXXFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\animate\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\animate\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\animate\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_animatelib.pch" $(CPPFLAGS) $(CXXFLAGS)
 ANIMATELIB_OBJECTS =  \
@@ -147,6 +147,9 @@ __THREAD_DEFINE_p_1 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -268,6 +271,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -307,7 +313,7 @@ $(OBJS)\animatedll_dummy.obj: ../../src/animate\..\..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(ANIMATEDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\animatedll_version.res: ../../src/animate\..\..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i ..\..\src\animate\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_animate_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i ..\..\src\animate\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_animate_vc$(VENDORTAG) $**
 
 $(OBJS)\animatedll_animate.obj: ../../src/animate\animate.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(ANIMATEDLL_CXXFLAGS) $**
diff --git a/contrib/build/animate/makefile.wat b/contrib/build/animate/makefile.wat
index 035b2aa1d5..a3396527ae 100644
--- a/contrib/build/animate/makefile.wat
+++ b/contrib/build/animate/makefile.wat
@@ -287,7 +287,7 @@ $(OBJS)\animatedll_dummy.obj :  .AUTODEPEND ../../src/animate\..\..\..\src\msw\d
 	$(CXX) -zq -fo=$^@ $(ANIMATEDLL_CXXFLAGS) $<
 
 $(OBJS)\animatedll_version.res :  .AUTODEPEND ../../src/animate\..\..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\src\animate\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_animate_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\src\animate\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_animate_wat$(VENDORTAG) $<
 
 $(OBJS)\animatedll_animate.obj :  .AUTODEPEND ../../src/animate\animate.cpp
 	$(CXX) -zq -fo=$^@ $(ANIMATEDLL_CXXFLAGS) $<
diff --git a/contrib/build/deprecated/makefile.bcc b/contrib/build/deprecated/makefile.bcc
index abd5ba1a4b..af95eebbba 100644
--- a/contrib/build/deprecated/makefile.bcc
+++ b/contrib/build/deprecated/makefile.bcc
@@ -30,14 +30,14 @@ SETUPHDIR = \
 DEPRECATEDDLL_CFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\deprecated\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\deprecated\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_DEPRECATED \
 	-I..\..\src\deprecated $(CPPFLAGS) $(CFLAGS)
 DEPRECATEDDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\deprecated\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\deprecated\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_DEPRECATED \
 	-I..\..\src\deprecated -Hu -H=$(OBJS)\wxprec_deprecateddll.csm $(CPPFLAGS) \
@@ -55,14 +55,14 @@ DEPRECATEDDLL_OBJECTS =  \
 DEPRECATEDLIB_CFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\deprecated\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\deprecated\..\..\include -I..\..\src\deprecated $(CPPFLAGS) \
 	$(CFLAGS)
 DEPRECATEDLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\deprecated\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\deprecated\..\..\include -I..\..\src\deprecated -Hu \
 	-H=$(OBJS)\wxprec_deprecatedlib.csm $(CPPFLAGS) $(CXXFLAGS)
@@ -155,6 +155,9 @@ __THREAD_DEFINE_p_1 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -234,6 +237,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -277,7 +283,7 @@ $(OBJS)\deprecateddll_dummy.obj: ../../src/deprecated\..\..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(DEPRECATEDDLL_CXXFLAGS) -H $**
 
 $(OBJS)\deprecateddll_version.res: ../../src/deprecated\..\..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i..\..\src\deprecated\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_deprecated_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i..\..\src\deprecated\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_deprecated_bcc$(VENDORTAG) $**
 
 $(OBJS)\deprecateddll_prop.obj: ../../src/deprecated\prop.cpp
 	$(CXX) -q -c -P -o$@ $(DEPRECATEDDLL_CXXFLAGS) $**
diff --git a/contrib/build/deprecated/makefile.gcc b/contrib/build/deprecated/makefile.gcc
index acbcb025b9..6bb3ef2a20 100644
--- a/contrib/build/deprecated/makefile.gcc
+++ b/contrib/build/deprecated/makefile.gcc
@@ -22,14 +22,14 @@ SETUPHDIR = \
 DEPRECATEDDLL_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\deprecated\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\deprecated\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_DEPRECATED \
 	-I..\..\src\deprecated $(CPPFLAGS) $(CFLAGS)
 DEPRECATEDDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\deprecated\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\deprecated\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_DEPRECATED \
 	-I..\..\src\deprecated $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
@@ -48,14 +48,14 @@ DEPRECATEDDLL_OBJECTS =  \
 DEPRECATEDLIB_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\deprecated\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\deprecated\..\..\include -I..\..\src\deprecated $(CPPFLAGS) \
 	$(CFLAGS)
 DEPRECATEDLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\deprecated\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\deprecated\..\..\include -I..\..\src\deprecated $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -143,6 +143,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(MONOLITHIC),1)
 __WXLIB_MONO_p = \
 	-lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)
@@ -234,6 +237,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 
 
 all: $(OBJS)
@@ -267,7 +273,7 @@ $(OBJS)\deprecateddll_dummy.o: ../../src/deprecated/../../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(DEPRECATEDDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\deprecateddll_version_rc.o: ../../src/deprecated/../../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ../../src/deprecated/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_deprecated_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ../../src/deprecated/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_deprecated_gcc$(VENDORTAG)
 
 $(OBJS)\deprecateddll_prop.o: ../../src/deprecated/prop.cpp
 	$(CXX) -c -o $@ $(DEPRECATEDDLL_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/build/deprecated/makefile.vc b/contrib/build/deprecated/makefile.vc
index 196fb55a5f..9396c0a861 100644
--- a/contrib/build/deprecated/makefile.vc
+++ b/contrib/build/deprecated/makefile.vc
@@ -24,19 +24,20 @@ DEPRECATEDDLL_CFLAGS = /M$(__RUNTIME_LIBS_9)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\deprecated\..\..\..\include /I$(SETUPHDIR) /W4 \
-	/I..\..\src\deprecated\..\..\include /DWXUSINGDLL /DWXMAKINGDLL_DEPRECATED \
-	/I..\..\src\deprecated $(CPPFLAGS) $(CFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\src\deprecated\..\..\..\include /I$(SETUPHDIR) \
+	/W4 /I..\..\src\deprecated\..\..\include /DWXUSINGDLL \
+	/DWXMAKINGDLL_DEPRECATED /I..\..\src\deprecated $(CPPFLAGS) $(CFLAGS)
 DEPRECATEDDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_9)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO_1) \
 	/Fd$(LIBDIRNAME)\wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_deprecated_vc$(VENDORTAG).pdb \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\deprecated\..\..\..\include /I$(SETUPHDIR) /W4 \
-	/I..\..\src\deprecated\..\..\include /DWXUSINGDLL /DWXMAKINGDLL_DEPRECATED \
-	/I..\..\src\deprecated $(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
-	/Fp"$(OBJS)\wxprec_deprecateddll.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\src\deprecated\..\..\..\include /I$(SETUPHDIR) \
+	/W4 /I..\..\src\deprecated\..\..\include /DWXUSINGDLL \
+	/DWXMAKINGDLL_DEPRECATED /I..\..\src\deprecated $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_deprecateddll.pch" \
+	$(CPPFLAGS) $(CXXFLAGS)
 DEPRECATEDDLL_OBJECTS =  \
 	$(OBJS)\deprecateddll_dummy.obj \
 	$(OBJS)\deprecateddll_version.res \
@@ -54,8 +55,8 @@ DEPRECATEDLIB_CFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\deprecated\..\..\..\include /I$(SETUPHDIR) /W4 \
-	/I..\..\src\deprecated\..\..\include /I..\..\src\deprecated $(CPPFLAGS) \
+	$(__MSLU_DEFINE_p) /I..\..\src\deprecated\..\..\..\include /I$(SETUPHDIR) \
+	/W4 /I..\..\src\deprecated\..\..\include /I..\..\src\deprecated $(CPPFLAGS) \
 	$(CFLAGS)
 DEPRECATEDLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO_1) \
@@ -63,10 +64,10 @@ DEPRECATEDLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\deprecated\..\..\..\include /I$(SETUPHDIR) /W4 \
-	/I..\..\src\deprecated\..\..\include /I..\..\src\deprecated $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_deprecatedlib.pch" \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I..\..\src\deprecated\..\..\..\include /I$(SETUPHDIR) \
+	/W4 /I..\..\src\deprecated\..\..\include /I..\..\src\deprecated \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
+	/Fp"$(OBJS)\wxprec_deprecatedlib.pch" $(CPPFLAGS) $(CXXFLAGS)
 DEPRECATEDLIB_OBJECTS =  \
 	$(OBJS)\deprecatedlib_dummy.obj \
 	$(OBJS)\deprecatedlib_prop.obj \
@@ -180,6 +181,9 @@ __THREAD_DEFINE_p_1 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -301,6 +305,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -340,7 +347,7 @@ $(OBJS)\deprecateddll_dummy.obj: ../../src/deprecated\..\..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DEPRECATEDDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\deprecateddll_version.res: ../../src/deprecated\..\..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i ..\..\src\deprecated\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_deprecated_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i ..\..\src\deprecated\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_deprecated_vc$(VENDORTAG) $**
 
 $(OBJS)\deprecateddll_prop.obj: ../../src/deprecated\prop.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DEPRECATEDDLL_CXXFLAGS) $**
diff --git a/contrib/build/deprecated/makefile.wat b/contrib/build/deprecated/makefile.wat
index a4db1070f3..e7caed4a9c 100644
--- a/contrib/build/deprecated/makefile.wat
+++ b/contrib/build/deprecated/makefile.wat
@@ -317,7 +317,7 @@ $(OBJS)\deprecateddll_dummy.obj :  .AUTODEPEND ../../src/deprecated\..\..\..\src
 	$(CXX) -zq -fo=$^@ $(DEPRECATEDDLL_CXXFLAGS) $<
 
 $(OBJS)\deprecateddll_version.res :  .AUTODEPEND ../../src/deprecated\..\..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\src\deprecated\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_deprecated_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\src\deprecated\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_deprecated_wat$(VENDORTAG) $<
 
 $(OBJS)\deprecateddll_prop.obj :  .AUTODEPEND ../../src/deprecated\prop.cpp
 	$(CXX) -zq -fo=$^@ $(DEPRECATEDDLL_CXXFLAGS) $<
diff --git a/contrib/build/fl/makefile.bcc b/contrib/build/fl/makefile.bcc
index 7205bc0c1e..a18fc55340 100644
--- a/contrib/build/fl/makefile.bcc
+++ b/contrib/build/fl/makefile.bcc
@@ -30,9 +30,10 @@ SETUPHDIR = \
 FLDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\src\fl\..\..\..\include \
-	-I$(SETUPHDIR) -I..\..\src\fl\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_FL \
-	-Hu -H=$(OBJS)\wxprec_fldll.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\src\fl\..\..\..\include -I$(SETUPHDIR) \
+	-I..\..\src\fl\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_FL -Hu \
+	-H=$(OBJS)\wxprec_fldll.csm $(CPPFLAGS) $(CXXFLAGS)
 FLDLL_OBJECTS =  \
 	$(OBJS)\fldll_dummy.obj \
 	$(OBJS)\fldll_antiflickpl.obj \
@@ -55,9 +56,10 @@ FLDLL_OBJECTS =  \
 FLLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I..\..\src\fl\..\..\..\include \
-	-I$(SETUPHDIR) -I..\..\src\fl\..\..\include -Hu -H=$(OBJS)\wxprec_fllib.csm \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I..\..\src\fl\..\..\..\include -I$(SETUPHDIR) \
+	-I..\..\src\fl\..\..\include -Hu -H=$(OBJS)\wxprec_fllib.csm $(CPPFLAGS) \
+	$(CXXFLAGS)
 FLLIB_OBJECTS =  \
 	$(OBJS)\fllib_dummy.obj \
 	$(OBJS)\fllib_antiflickpl.obj \
@@ -156,6 +158,9 @@ __THREAD_DEFINE_p_1 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -235,6 +240,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -278,7 +286,7 @@ $(OBJS)\fldll_dummy.obj: ../../src/fl\..\..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(FLDLL_CXXFLAGS) -H $**
 
 $(OBJS)\fldll_version.res: ../../src/fl\..\..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i..\..\src\fl\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_fl_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i..\..\src\fl\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_fl_bcc$(VENDORTAG) $**
 
 $(OBJS)\fldll_antiflickpl.obj: ../../src/fl\antiflickpl.cpp
 	$(CXX) -q -c -P -o$@ $(FLDLL_CXXFLAGS) $**
diff --git a/contrib/build/fl/makefile.gcc b/contrib/build/fl/makefile.gcc
index 0237c8466d..e7d75fa412 100644
--- a/contrib/build/fl/makefile.gcc
+++ b/contrib/build/fl/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 FLDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\src\fl\..\..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\fl\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_FL \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\src\fl\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I..\..\src\fl\..\..\include -DWXUSINGDLL \
+	-DWXMAKINGDLL_FL $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 FLDLL_OBJECTS =  \
 	$(OBJS)\fldll_dummy.o \
 	$(OBJS)\fldll_version_rc.o \
@@ -49,9 +49,9 @@ FLDLL_OBJECTS =  \
 FLLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\src\fl\..\..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\fl\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\src\fl\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I..\..\src\fl\..\..\include $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 FLLIB_OBJECTS =  \
 	$(OBJS)\fllib_dummy.o \
 	$(OBJS)\fllib_antiflickpl.o \
@@ -145,6 +145,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(MONOLITHIC),1)
 __WXLIB_MONO_p = \
 	-lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)
@@ -236,6 +239,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 
 
 all: $(OBJS)
@@ -269,7 +275,7 @@ $(OBJS)\fldll_dummy.o: ../../src/fl/../../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(FLDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\fldll_version_rc.o: ../../src/fl/../../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ../../src/fl/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_fl_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ../../src/fl/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_fl_gcc$(VENDORTAG)
 
 $(OBJS)\fldll_antiflickpl.o: ../../src/fl/antiflickpl.cpp
 	$(CXX) -c -o $@ $(FLDLL_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/build/fl/makefile.vc b/contrib/build/fl/makefile.vc
index 455946d0e7..01b073ba38 100644
--- a/contrib/build/fl/makefile.vc
+++ b/contrib/build/fl/makefile.vc
@@ -24,7 +24,7 @@ FLDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_9)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\fl\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\fl\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\fl\..\..\include /DWXUSINGDLL /DWXMAKINGDLL_FL $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_fldll.pch" \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -54,7 +54,7 @@ FLLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\fl\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\fl\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\fl\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_fllib.pch" $(CPPFLAGS) $(CXXFLAGS)
 FLLIB_OBJECTS =  \
@@ -179,6 +179,9 @@ __THREAD_DEFINE_p_1 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -300,6 +303,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -339,7 +345,7 @@ $(OBJS)\fldll_dummy.obj: ../../src/fl\..\..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(FLDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\fldll_version.res: ../../src/fl\..\..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i ..\..\src\fl\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_fl_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i ..\..\src\fl\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_fl_vc$(VENDORTAG) $**
 
 $(OBJS)\fldll_antiflickpl.obj: ../../src/fl\antiflickpl.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(FLDLL_CXXFLAGS) $**
diff --git a/contrib/build/fl/makefile.wat b/contrib/build/fl/makefile.wat
index ceba05fb33..da740bbf3e 100644
--- a/contrib/build/fl/makefile.wat
+++ b/contrib/build/fl/makefile.wat
@@ -318,7 +318,7 @@ $(OBJS)\fldll_dummy.obj :  .AUTODEPEND ../../src/fl\..\..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(FLDLL_CXXFLAGS) $<
 
 $(OBJS)\fldll_version.res :  .AUTODEPEND ../../src/fl\..\..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\src\fl\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_fl_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\src\fl\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_fl_wat$(VENDORTAG) $<
 
 $(OBJS)\fldll_antiflickpl.obj :  .AUTODEPEND ../../src/fl\antiflickpl.cpp
 	$(CXX) -zq -fo=$^@ $(FLDLL_CXXFLAGS) $<
diff --git a/contrib/build/foldbar/makefile.bcc b/contrib/build/foldbar/makefile.bcc
index 9faf6c0fff..8bf18d4c71 100644
--- a/contrib/build/foldbar/makefile.bcc
+++ b/contrib/build/foldbar/makefile.bcc
@@ -30,7 +30,7 @@ SETUPHDIR = \
 FOLDBARDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\foldbar\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\foldbar\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_FOLDBAR -Hu \
 	-H=$(OBJS)\wxprec_foldbardll.csm $(CPPFLAGS) $(CXXFLAGS)
@@ -42,7 +42,7 @@ FOLDBARDLL_OBJECTS =  \
 FOLDBARLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\foldbar\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\foldbar\..\..\include -Hu -H=$(OBJS)\wxprec_foldbarlib.csm \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -130,6 +130,9 @@ __THREAD_DEFINE_p_1 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -209,6 +212,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -252,7 +258,7 @@ $(OBJS)\foldbardll_dummy.obj: ../../src/foldbar\..\..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(FOLDBARDLL_CXXFLAGS) -H $**
 
 $(OBJS)\foldbardll_version.res: ../../src/foldbar\..\..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i..\..\src\foldbar\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_foldbar_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i..\..\src\foldbar\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_foldbar_bcc$(VENDORTAG) $**
 
 $(OBJS)\foldbardll_captionbar.obj: ../../src/foldbar\captionbar.cpp
 	$(CXX) -q -c -P -o$@ $(FOLDBARDLL_CXXFLAGS) $**
diff --git a/contrib/build/foldbar/makefile.gcc b/contrib/build/foldbar/makefile.gcc
index bed1186892..36e9bf62b3 100644
--- a/contrib/build/foldbar/makefile.gcc
+++ b/contrib/build/foldbar/makefile.gcc
@@ -22,7 +22,7 @@ SETUPHDIR = \
 FOLDBARDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\foldbar\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\foldbar\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_FOLDBAR \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
@@ -36,7 +36,7 @@ FOLDBARDLL_OBJECTS =  \
 FOLDBARLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\foldbar\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\foldbar\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -119,6 +119,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(MONOLITHIC),1)
 __WXLIB_MONO_p = \
 	-lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)
@@ -210,6 +213,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 
 
 all: $(OBJS)
@@ -243,7 +249,7 @@ $(OBJS)\foldbardll_dummy.o: ../../src/foldbar/../../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(FOLDBARDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\foldbardll_version_rc.o: ../../src/foldbar/../../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ../../src/foldbar/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_foldbar_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ../../src/foldbar/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_foldbar_gcc$(VENDORTAG)
 
 $(OBJS)\foldbardll_captionbar.o: ../../src/foldbar/captionbar.cpp
 	$(CXX) -c -o $@ $(FOLDBARDLL_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/build/foldbar/makefile.vc b/contrib/build/foldbar/makefile.vc
index 88874914ca..6fde8420ad 100644
--- a/contrib/build/foldbar/makefile.vc
+++ b/contrib/build/foldbar/makefile.vc
@@ -24,7 +24,7 @@ FOLDBARDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_9)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\foldbar\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\foldbar\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\foldbar\..\..\include /DWXUSINGDLL /DWXMAKINGDLL_FOLDBAR \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
 	/Fp"$(OBJS)\wxprec_foldbardll.pch" $(CPPFLAGS) $(CXXFLAGS)
@@ -40,7 +40,7 @@ FOLDBARLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\foldbar\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\foldbar\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\foldbar\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_foldbarlib.pch" $(CPPFLAGS) $(CXXFLAGS)
 FOLDBARLIB_OBJECTS =  \
@@ -151,6 +151,9 @@ __THREAD_DEFINE_p_1 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -272,6 +275,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -311,7 +317,7 @@ $(OBJS)\foldbardll_dummy.obj: ../../src/foldbar\..\..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(FOLDBARDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\foldbardll_version.res: ../../src/foldbar\..\..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i ..\..\src\foldbar\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_foldbar_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i ..\..\src\foldbar\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_foldbar_vc$(VENDORTAG) $**
 
 $(OBJS)\foldbardll_captionbar.obj: ../../src/foldbar\captionbar.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(FOLDBARDLL_CXXFLAGS) $**
diff --git a/contrib/build/foldbar/makefile.wat b/contrib/build/foldbar/makefile.wat
index 8e592e2b77..74099885f5 100644
--- a/contrib/build/foldbar/makefile.wat
+++ b/contrib/build/foldbar/makefile.wat
@@ -291,7 +291,7 @@ $(OBJS)\foldbardll_dummy.obj :  .AUTODEPEND ../../src/foldbar\..\..\..\src\msw\d
 	$(CXX) -zq -fo=$^@ $(FOLDBARDLL_CXXFLAGS) $<
 
 $(OBJS)\foldbardll_version.res :  .AUTODEPEND ../../src/foldbar\..\..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\src\foldbar\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_foldbar_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\src\foldbar\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_foldbar_wat$(VENDORTAG) $<
 
 $(OBJS)\foldbardll_captionbar.obj :  .AUTODEPEND ../../src/foldbar\captionbar.cpp
 	$(CXX) -zq -fo=$^@ $(FOLDBARDLL_CXXFLAGS) $<
diff --git a/contrib/build/gizmos/makefile.bcc b/contrib/build/gizmos/makefile.bcc
index b11e1e6e70..f01239b54b 100644
--- a/contrib/build/gizmos/makefile.bcc
+++ b/contrib/build/gizmos/makefile.bcc
@@ -30,7 +30,7 @@ SETUPHDIR = \
 GIZMOSDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_2) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\gizmos\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\gizmos\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_GIZMOS -Hu \
 	-H=$(OBJS)\wxprec_gizmosdll.csm $(CPPFLAGS) $(CXXFLAGS)
@@ -45,7 +45,7 @@ GIZMOSDLL_OBJECTS =  \
 GIZMOS_XRCDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_2) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\gizmos\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\gizmos\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_GIZMOS_XRC -Hu \
 	-H=$(OBJS)\wxprec_gizmos_xrcdll.csm $(CPPFLAGS) $(CXXFLAGS)
@@ -55,7 +55,7 @@ GIZMOS_XRCDLL_OBJECTS =  \
 GIZMOSLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_2) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\gizmos\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\gizmos\..\..\include -Hu -H=$(OBJS)\wxprec_gizmoslib.csm \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -70,7 +70,7 @@ GIZMOSLIB_OBJECTS =  \
 GIZMOS_XRCLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_2) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\gizmos\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\gizmos\..\..\include -Hu -H=$(OBJS)\wxprec_gizmos_xrclib.csm \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -176,6 +176,9 @@ __THREAD_DEFINE_p_0 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_0 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_0 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -251,6 +254,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -318,7 +324,7 @@ $(OBJS)\gizmosdll_dummy.obj: ../../src/gizmos\..\..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(GIZMOSDLL_CXXFLAGS) -H $**
 
 $(OBJS)\gizmosdll_version.res: ../../src/gizmos\..\..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) -i..\..\src\gizmos\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) -i..\..\src\gizmos\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_bcc$(VENDORTAG) $**
 
 $(OBJS)\gizmosdll_dynamicsash.obj: ../../src/gizmos\dynamicsash.cpp
 	$(CXX) -q -c -P -o$@ $(GIZMOSDLL_CXXFLAGS) $**
@@ -342,7 +348,7 @@ $(OBJS)\gizmos_xrcdll_dummy.obj: ../../src/gizmos\..\..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(GIZMOS_XRCDLL_CXXFLAGS) -H $**
 
 $(OBJS)\gizmos_xrcdll_version.res: ../../src/gizmos\..\..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) -i..\..\src\gizmos\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_xrc_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) -i..\..\src\gizmos\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_xrc_bcc$(VENDORTAG) $**
 
 $(OBJS)\gizmos_xrcdll_xh_statpict.obj: ../../src/gizmos\xh_statpict.cpp
 	$(CXX) -q -c -P -o$@ $(GIZMOS_XRCDLL_CXXFLAGS) $**
diff --git a/contrib/build/gizmos/makefile.gcc b/contrib/build/gizmos/makefile.gcc
index 5f50838f0e..978feb8fef 100644
--- a/contrib/build/gizmos/makefile.gcc
+++ b/contrib/build/gizmos/makefile.gcc
@@ -22,7 +22,7 @@ SETUPHDIR = \
 GIZMOSDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\gizmos\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\gizmos\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_GIZMOS \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
@@ -39,7 +39,7 @@ GIZMOSDLL_OBJECTS =  \
 GIZMOS_XRCDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\gizmos\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\gizmos\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_GIZMOS_XRC \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
@@ -51,7 +51,7 @@ GIZMOS_XRCDLL_OBJECTS =  \
 GIZMOSLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\gizmos\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\gizmos\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -66,7 +66,7 @@ GIZMOSLIB_OBJECTS =  \
 GIZMOS_XRCLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\gizmos\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\gizmos\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -171,6 +171,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_0 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_0 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(MONOLITHIC),1)
 __WXLIB_MONO_p = \
 	-lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)
@@ -258,6 +261,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 
 
 all: $(OBJS)
@@ -310,7 +316,7 @@ $(OBJS)\gizmosdll_dummy.o: ../../src/gizmos/../../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(GIZMOSDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\gizmosdll_version_rc.o: ../../src/gizmos/../../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) --include-dir ../../src/gizmos/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) --include-dir ../../src/gizmos/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_gcc$(VENDORTAG)
 
 $(OBJS)\gizmosdll_dynamicsash.o: ../../src/gizmos/dynamicsash.cpp
 	$(CXX) -c -o $@ $(GIZMOSDLL_CXXFLAGS) $(CPPDEPS) $<
@@ -334,7 +340,7 @@ $(OBJS)\gizmos_xrcdll_dummy.o: ../../src/gizmos/../../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(GIZMOS_XRCDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\gizmos_xrcdll_version_rc.o: ../../src/gizmos/../../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) --include-dir ../../src/gizmos/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_xrc_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) --include-dir ../../src/gizmos/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_xrc_gcc$(VENDORTAG)
 
 $(OBJS)\gizmos_xrcdll_xh_statpict.o: ../../src/gizmos/xh_statpict.cpp
 	$(CXX) -c -o $@ $(GIZMOS_XRCDLL_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/build/gizmos/makefile.vc b/contrib/build/gizmos/makefile.vc
index 4643919d2d..b6f650f4e9 100644
--- a/contrib/build/gizmos/makefile.vc
+++ b/contrib/build/gizmos/makefile.vc
@@ -24,7 +24,7 @@ GIZMOSDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_9)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\gizmos\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\gizmos\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\gizmos\..\..\include /DWXUSINGDLL /DWXMAKINGDLL_GIZMOS \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
 	/Fp"$(OBJS)\wxprec_gizmosdll.pch" $(CPPFLAGS) $(CXXFLAGS)
@@ -43,7 +43,7 @@ GIZMOS_XRCDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_23)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\gizmos\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\gizmos\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\gizmos\..\..\include /DWXUSINGDLL /DWXMAKINGDLL_GIZMOS_XRC \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
 	/Fp"$(OBJS)\wxprec_gizmos_xrcdll.pch" $(CPPFLAGS) $(CXXFLAGS)
@@ -57,7 +57,7 @@ GIZMOSLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_36)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\gizmos\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\gizmos\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\gizmos\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_gizmoslib.pch" $(CPPFLAGS) $(CXXFLAGS)
 GIZMOSLIB_OBJECTS =  \
@@ -74,7 +74,7 @@ GIZMOS_XRCLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_49)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\gizmos\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\gizmos\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\gizmos\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_gizmos_xrclib.pch" $(CPPFLAGS) \
 	$(CXXFLAGS)
@@ -222,6 +222,9 @@ __THREAD_DEFINE_p_0 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_0 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_0 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -333,6 +336,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -392,7 +398,7 @@ $(OBJS)\gizmosdll_dummy.obj: ../../src/gizmos\..\..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(GIZMOSDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\gizmosdll_version.res: ../../src/gizmos\..\..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_0) $(__NO_VC_CRTDBG_p_0)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) /i ..\..\src\gizmos\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_0) $(__NO_VC_CRTDBG_p_0)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) /i ..\..\src\gizmos\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_vc$(VENDORTAG) $**
 
 $(OBJS)\gizmosdll_dynamicsash.obj: ../../src/gizmos\dynamicsash.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(GIZMOSDLL_CXXFLAGS) $**
@@ -416,7 +422,7 @@ $(OBJS)\gizmos_xrcdll_dummy.obj: ../../src/gizmos\..\..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(GIZMOS_XRCDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\gizmos_xrcdll_version.res: ../../src/gizmos\..\..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_0) $(__NO_VC_CRTDBG_p_0)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) /i ..\..\src\gizmos\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_xrc_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_0) $(__NO_VC_CRTDBG_p_0)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) /i ..\..\src\gizmos\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_xrc_vc$(VENDORTAG) $**
 
 $(OBJS)\gizmos_xrcdll_xh_statpict.obj: ../../src/gizmos\xh_statpict.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(GIZMOS_XRCDLL_CXXFLAGS) $**
diff --git a/contrib/build/gizmos/makefile.wat b/contrib/build/gizmos/makefile.wat
index a738f151c7..ad7e286490 100644
--- a/contrib/build/gizmos/makefile.wat
+++ b/contrib/build/gizmos/makefile.wat
@@ -370,7 +370,7 @@ $(OBJS)\gizmosdll_dummy.obj :  .AUTODEPEND ../../src/gizmos\..\..\..\src\msw\dum
 	$(CXX) -zq -fo=$^@ $(GIZMOSDLL_CXXFLAGS) $<
 
 $(OBJS)\gizmosdll_version.res :  .AUTODEPEND ../../src/gizmos\..\..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\src\gizmos\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\src\gizmos\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_wat$(VENDORTAG) $<
 
 $(OBJS)\gizmosdll_dynamicsash.obj :  .AUTODEPEND ../../src/gizmos\dynamicsash.cpp
 	$(CXX) -zq -fo=$^@ $(GIZMOSDLL_CXXFLAGS) $<
@@ -394,7 +394,7 @@ $(OBJS)\gizmos_xrcdll_dummy.obj :  .AUTODEPEND ../../src/gizmos\..\..\..\src\msw
 	$(CXX) -zq -fo=$^@ $(GIZMOS_XRCDLL_CXXFLAGS) $<
 
 $(OBJS)\gizmos_xrcdll_version.res :  .AUTODEPEND ../../src/gizmos\..\..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\src\gizmos\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_xrc_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\src\gizmos\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_xrc_wat$(VENDORTAG) $<
 
 $(OBJS)\gizmos_xrcdll_xh_statpict.obj :  .AUTODEPEND ../../src/gizmos\xh_statpict.cpp
 	$(CXX) -zq -fo=$^@ $(GIZMOS_XRCDLL_CXXFLAGS) $<
diff --git a/contrib/build/mmedia/makefile.bcc b/contrib/build/mmedia/makefile.bcc
index 676bf9ff71..e427611668 100644
--- a/contrib/build/mmedia/makefile.bcc
+++ b/contrib/build/mmedia/makefile.bcc
@@ -30,7 +30,7 @@ SETUPHDIR = \
 MMEDIADLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\mmedia\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\mmedia\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_MMEDIA -Hu \
 	-H=$(OBJS)\wxprec_mmediadll.csm $(CPPFLAGS) $(CXXFLAGS)
@@ -59,7 +59,7 @@ MMEDIADLL_OBJECTS =  \
 MMEDIALIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\mmedia\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\mmedia\..\..\include -Hu -H=$(OBJS)\wxprec_mmedialib.csm \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -164,6 +164,9 @@ __THREAD_DEFINE_p_1 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -243,6 +246,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -286,7 +292,7 @@ $(OBJS)\mmediadll_dummy.obj: ../../src/mmedia\..\..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(MMEDIADLL_CXXFLAGS) -H $**
 
 $(OBJS)\mmediadll_version.res: ../../src/mmedia\..\..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i..\..\src\mmedia\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_mmedia_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i..\..\src\mmedia\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_mmedia_bcc$(VENDORTAG) $**
 
 $(OBJS)\mmediadll_cdwin.obj: ../../src/mmedia\cdwin.cpp
 	$(CXX) -q -c -P -o$@ $(MMEDIADLL_CXXFLAGS) $**
diff --git a/contrib/build/mmedia/makefile.gcc b/contrib/build/mmedia/makefile.gcc
index 642a02c6e2..7845be24c4 100644
--- a/contrib/build/mmedia/makefile.gcc
+++ b/contrib/build/mmedia/makefile.gcc
@@ -22,7 +22,7 @@ SETUPHDIR = \
 MMEDIADLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\mmedia\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\mmedia\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_MMEDIA \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
@@ -53,7 +53,7 @@ MMEDIADLL_OBJECTS =  \
 MMEDIALIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\mmedia\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\mmedia\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -153,6 +153,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(MONOLITHIC),1)
 __WXLIB_MONO_p = \
 	-lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)
@@ -244,6 +247,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 
 
 all: $(OBJS)
@@ -277,7 +283,7 @@ $(OBJS)\mmediadll_dummy.o: ../../src/mmedia/../../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(MMEDIADLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\mmediadll_version_rc.o: ../../src/mmedia/../../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ../../src/mmedia/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_mmedia_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ../../src/mmedia/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_mmedia_gcc$(VENDORTAG)
 
 $(OBJS)\mmediadll_cdwin.o: ../../src/mmedia/cdwin.cpp
 	$(CXX) -c -o $@ $(MMEDIADLL_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/build/mmedia/makefile.vc b/contrib/build/mmedia/makefile.vc
index b13e4e184d..436d6e3787 100644
--- a/contrib/build/mmedia/makefile.vc
+++ b/contrib/build/mmedia/makefile.vc
@@ -24,7 +24,7 @@ MMEDIADLL_CXXFLAGS = /M$(__RUNTIME_LIBS_9)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\mmedia\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\mmedia\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\mmedia\..\..\include /DWXUSINGDLL /DWXMAKINGDLL_MMEDIA \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
 	/Fp"$(OBJS)\wxprec_mmediadll.pch" $(CPPFLAGS) $(CXXFLAGS)
@@ -57,7 +57,7 @@ MMEDIALIB_CXXFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\mmedia\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\mmedia\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\mmedia\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_mmedialib.pch" $(CPPFLAGS) $(CXXFLAGS)
 MMEDIALIB_OBJECTS =  \
@@ -185,6 +185,9 @@ __THREAD_DEFINE_p_1 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -306,6 +309,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -345,7 +351,7 @@ $(OBJS)\mmediadll_dummy.obj: ../../src/mmedia\..\..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MMEDIADLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\mmediadll_version.res: ../../src/mmedia\..\..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i ..\..\src\mmedia\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_mmedia_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i ..\..\src\mmedia\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_mmedia_vc$(VENDORTAG) $**
 
 $(OBJS)\mmediadll_cdwin.obj: ../../src/mmedia\cdwin.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MMEDIADLL_CXXFLAGS) $**
diff --git a/contrib/build/mmedia/makefile.wat b/contrib/build/mmedia/makefile.wat
index 1731dfedb2..96bc9c2e01 100644
--- a/contrib/build/mmedia/makefile.wat
+++ b/contrib/build/mmedia/makefile.wat
@@ -324,7 +324,7 @@ $(OBJS)\mmediadll_dummy.obj :  .AUTODEPEND ../../src/mmedia\..\..\..\src\msw\dum
 	$(CXX) -zq -fo=$^@ $(MMEDIADLL_CXXFLAGS) $<
 
 $(OBJS)\mmediadll_version.res :  .AUTODEPEND ../../src/mmedia\..\..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\src\mmedia\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_mmedia_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\src\mmedia\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_mmedia_wat$(VENDORTAG) $<
 
 $(OBJS)\mmediadll_cdwin.obj :  .AUTODEPEND ../../src/mmedia\cdwin.cpp
 	$(CXX) -zq -fo=$^@ $(MMEDIADLL_CXXFLAGS) $<
diff --git a/contrib/build/net/makefile.bcc b/contrib/build/net/makefile.bcc
index d3c7edf67c..5192009d1f 100644
--- a/contrib/build/net/makefile.bcc
+++ b/contrib/build/net/makefile.bcc
@@ -30,7 +30,7 @@ SETUPHDIR = \
 NETUTILSDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\net\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\net\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_NETUTILS -Hu \
 	-H=$(OBJS)\wxprec_netutilsdll.csm $(CPPFLAGS) $(CXXFLAGS)
@@ -42,7 +42,7 @@ NETUTILSDLL_OBJECTS =  \
 NETUTILSLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\net\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\net\..\..\include -Hu -H=$(OBJS)\wxprec_netutilslib.csm \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -130,6 +130,9 @@ __THREAD_DEFINE_p_1 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -209,6 +212,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -252,7 +258,7 @@ $(OBJS)\netutilsdll_dummy.obj: ../../src/net\..\..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(NETUTILSDLL_CXXFLAGS) -H $**
 
 $(OBJS)\netutilsdll_version.res: ../../src/net\..\..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i..\..\src\net\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_netutils_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i..\..\src\net\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_netutils_bcc$(VENDORTAG) $**
 
 $(OBJS)\netutilsdll_email.obj: ../../src/net\email.cpp
 	$(CXX) -q -c -P -o$@ $(NETUTILSDLL_CXXFLAGS) $**
diff --git a/contrib/build/net/makefile.gcc b/contrib/build/net/makefile.gcc
index c5e54f3076..9e1710a8be 100644
--- a/contrib/build/net/makefile.gcc
+++ b/contrib/build/net/makefile.gcc
@@ -22,7 +22,7 @@ SETUPHDIR = \
 NETUTILSDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\net\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\net\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_NETUTILS \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
@@ -36,7 +36,7 @@ NETUTILSDLL_OBJECTS =  \
 NETUTILSLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\net\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\net\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -119,6 +119,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(MONOLITHIC),1)
 __WXLIB_MONO_p = \
 	-lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)
@@ -210,6 +213,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 
 
 all: $(OBJS)
@@ -243,7 +249,7 @@ $(OBJS)\netutilsdll_dummy.o: ../../src/net/../../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(NETUTILSDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\netutilsdll_version_rc.o: ../../src/net/../../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ../../src/net/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_netutils_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ../../src/net/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_netutils_gcc$(VENDORTAG)
 
 $(OBJS)\netutilsdll_email.o: ../../src/net/email.cpp
 	$(CXX) -c -o $@ $(NETUTILSDLL_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/build/net/makefile.vc b/contrib/build/net/makefile.vc
index 05256313fd..328f7773f5 100644
--- a/contrib/build/net/makefile.vc
+++ b/contrib/build/net/makefile.vc
@@ -24,7 +24,7 @@ NETUTILSDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_9)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\net\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\net\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\net\..\..\include /DWXUSINGDLL /DWXMAKINGDLL_NETUTILS \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
 	/Fp"$(OBJS)\wxprec_netutilsdll.pch" $(CPPFLAGS) $(CXXFLAGS)
@@ -40,7 +40,7 @@ NETUTILSLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\net\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\net\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\net\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_netutilslib.pch" $(CPPFLAGS) \
 	$(CXXFLAGS)
@@ -152,6 +152,9 @@ __THREAD_DEFINE_p_1 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -273,6 +276,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -312,7 +318,7 @@ $(OBJS)\netutilsdll_dummy.obj: ../../src/net\..\..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(NETUTILSDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\netutilsdll_version.res: ../../src/net\..\..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i ..\..\src\net\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_netutils_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i ..\..\src\net\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_netutils_vc$(VENDORTAG) $**
 
 $(OBJS)\netutilsdll_email.obj: ../../src/net\email.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(NETUTILSDLL_CXXFLAGS) $**
diff --git a/contrib/build/net/makefile.wat b/contrib/build/net/makefile.wat
index e49e321c2c..b70b453062 100644
--- a/contrib/build/net/makefile.wat
+++ b/contrib/build/net/makefile.wat
@@ -290,7 +290,7 @@ $(OBJS)\netutilsdll_dummy.obj :  .AUTODEPEND ../../src/net\..\..\..\src\msw\dumm
 	$(CXX) -zq -fo=$^@ $(NETUTILSDLL_CXXFLAGS) $<
 
 $(OBJS)\netutilsdll_version.res :  .AUTODEPEND ../../src/net\..\..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\src\net\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_netutils_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\src\net\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_netutils_wat$(VENDORTAG) $<
 
 $(OBJS)\netutilsdll_email.obj :  .AUTODEPEND ../../src/net\email.cpp
 	$(CXX) -zq -fo=$^@ $(NETUTILSDLL_CXXFLAGS) $<
diff --git a/contrib/build/ogl/makefile.bcc b/contrib/build/ogl/makefile.bcc
index f13b083f85..784f4abe13 100644
--- a/contrib/build/ogl/makefile.bcc
+++ b/contrib/build/ogl/makefile.bcc
@@ -30,7 +30,7 @@ SETUPHDIR = \
 OGLDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\ogl\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\ogl\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_OGL -Hu \
 	-H=$(OBJS)\wxprec_ogldll.csm $(CPPFLAGS) $(CXXFLAGS)
@@ -51,7 +51,7 @@ OGLDLL_OBJECTS =  \
 OGLLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\ogl\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\ogl\..\..\include -Hu -H=$(OBJS)\wxprec_ogllib.csm $(CPPFLAGS) \
 	$(CXXFLAGS)
@@ -148,6 +148,9 @@ __THREAD_DEFINE_p_1 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -227,6 +230,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -270,7 +276,7 @@ $(OBJS)\ogldll_dummy.obj: ../../src/ogl\..\..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(OGLDLL_CXXFLAGS) -H $**
 
 $(OBJS)\ogldll_version.res: ../../src/ogl\..\..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i..\..\src\ogl\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_ogl_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i..\..\src\ogl\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_ogl_bcc$(VENDORTAG) $**
 
 $(OBJS)\ogldll_basic2.obj: ../../src/ogl\basic2.cpp
 	$(CXX) -q -c -P -o$@ $(OGLDLL_CXXFLAGS) $**
diff --git a/contrib/build/ogl/makefile.gcc b/contrib/build/ogl/makefile.gcc
index f1bce98ed5..112e6365fd 100644
--- a/contrib/build/ogl/makefile.gcc
+++ b/contrib/build/ogl/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 OGLDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\src\ogl\..\..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\ogl\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_OGL \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\src\ogl\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I..\..\src\ogl\..\..\include -DWXUSINGDLL \
+	-DWXMAKINGDLL_OGL $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 OGLDLL_OBJECTS =  \
 	$(OBJS)\ogldll_dummy.o \
 	$(OBJS)\ogldll_version_rc.o \
@@ -44,9 +44,9 @@ OGLDLL_OBJECTS =  \
 OGLLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\src\ogl\..\..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\ogl\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\src\ogl\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I..\..\src\ogl\..\..\include $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 OGLLIB_OBJECTS =  \
 	$(OBJS)\ogllib_dummy.o \
 	$(OBJS)\ogllib_basic2.o \
@@ -135,6 +135,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(MONOLITHIC),1)
 __WXLIB_MONO_p = \
 	-lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)
@@ -226,6 +229,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 
 
 all: $(OBJS)
@@ -259,7 +265,7 @@ $(OBJS)\ogldll_dummy.o: ../../src/ogl/../../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(OGLDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\ogldll_version_rc.o: ../../src/ogl/../../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ../../src/ogl/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_ogl_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ../../src/ogl/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_ogl_gcc$(VENDORTAG)
 
 $(OBJS)\ogldll_basic2.o: ../../src/ogl/basic2.cpp
 	$(CXX) -c -o $@ $(OGLDLL_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/build/ogl/makefile.vc b/contrib/build/ogl/makefile.vc
index 7f8004a598..f2ef29a381 100644
--- a/contrib/build/ogl/makefile.vc
+++ b/contrib/build/ogl/makefile.vc
@@ -24,7 +24,7 @@ OGLDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_9)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\ogl\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\ogl\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\ogl\..\..\include /DWXUSINGDLL /DWXMAKINGDLL_OGL $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_ogldll.pch" \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -49,7 +49,7 @@ OGLLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\ogl\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\ogl\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\ogl\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_ogllib.pch" $(CPPFLAGS) $(CXXFLAGS)
 OGLLIB_OBJECTS =  \
@@ -169,6 +169,9 @@ __THREAD_DEFINE_p_1 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -290,6 +293,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -329,7 +335,7 @@ $(OBJS)\ogldll_dummy.obj: ../../src/ogl\..\..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(OGLDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\ogldll_version.res: ../../src/ogl\..\..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i ..\..\src\ogl\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_ogl_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i ..\..\src\ogl\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_ogl_vc$(VENDORTAG) $**
 
 $(OBJS)\ogldll_basic2.obj: ../../src/ogl\basic2.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(OGLDLL_CXXFLAGS) $**
diff --git a/contrib/build/ogl/makefile.wat b/contrib/build/ogl/makefile.wat
index 7f9295013a..1ee826baf0 100644
--- a/contrib/build/ogl/makefile.wat
+++ b/contrib/build/ogl/makefile.wat
@@ -308,7 +308,7 @@ $(OBJS)\ogldll_dummy.obj :  .AUTODEPEND ../../src/ogl\..\..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(OGLDLL_CXXFLAGS) $<
 
 $(OBJS)\ogldll_version.res :  .AUTODEPEND ../../src/ogl\..\..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\src\ogl\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_ogl_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\src\ogl\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_ogl_wat$(VENDORTAG) $<
 
 $(OBJS)\ogldll_basic2.obj :  .AUTODEPEND ../../src/ogl\basic2.cpp
 	$(CXX) -zq -fo=$^@ $(OGLDLL_CXXFLAGS) $<
diff --git a/contrib/build/plot/makefile.bcc b/contrib/build/plot/makefile.bcc
index 84b944d26a..3e288f970f 100644
--- a/contrib/build/plot/makefile.bcc
+++ b/contrib/build/plot/makefile.bcc
@@ -30,7 +30,7 @@ SETUPHDIR = \
 PLOTDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\plot\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\plot\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_PLOT -Hu \
 	-H=$(OBJS)\wxprec_plotdll.csm $(CPPFLAGS) $(CXXFLAGS)
@@ -40,7 +40,7 @@ PLOTDLL_OBJECTS =  \
 PLOTLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\plot\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\plot\..\..\include -Hu -H=$(OBJS)\wxprec_plotlib.csm \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -126,6 +126,9 @@ __THREAD_DEFINE_p_1 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -205,6 +208,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -248,7 +254,7 @@ $(OBJS)\plotdll_dummy.obj: ../../src/plot\..\..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(PLOTDLL_CXXFLAGS) -H $**
 
 $(OBJS)\plotdll_version.res: ../../src/plot\..\..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i..\..\src\plot\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_plot_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i..\..\src\plot\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_plot_bcc$(VENDORTAG) $**
 
 $(OBJS)\plotdll_plot.obj: ../../src/plot\plot.cpp
 	$(CXX) -q -c -P -o$@ $(PLOTDLL_CXXFLAGS) $**
diff --git a/contrib/build/plot/makefile.gcc b/contrib/build/plot/makefile.gcc
index e3e9d78a34..cf73a68302 100644
--- a/contrib/build/plot/makefile.gcc
+++ b/contrib/build/plot/makefile.gcc
@@ -22,7 +22,7 @@ SETUPHDIR = \
 PLOTDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\plot\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\plot\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_PLOT \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
@@ -34,7 +34,7 @@ PLOTDLL_OBJECTS =  \
 PLOTLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\plot\..\..\..\include -I$(SETUPHDIR) -W -Wall \
 	-I..\..\src\plot\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -115,6 +115,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(MONOLITHIC),1)
 __WXLIB_MONO_p = \
 	-lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)
@@ -206,6 +209,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 
 
 all: $(OBJS)
@@ -239,7 +245,7 @@ $(OBJS)\plotdll_dummy.o: ../../src/plot/../../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(PLOTDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\plotdll_version_rc.o: ../../src/plot/../../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ../../src/plot/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_plot_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ../../src/plot/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_plot_gcc$(VENDORTAG)
 
 $(OBJS)\plotdll_plot.o: ../../src/plot/plot.cpp
 	$(CXX) -c -o $@ $(PLOTDLL_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/build/plot/makefile.vc b/contrib/build/plot/makefile.vc
index 6a999589fb..78543af2c6 100644
--- a/contrib/build/plot/makefile.vc
+++ b/contrib/build/plot/makefile.vc
@@ -24,7 +24,7 @@ PLOTDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_9)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\plot\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\plot\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\plot\..\..\include /DWXUSINGDLL /DWXMAKINGDLL_PLOT \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" \
 	/Fp"$(OBJS)\wxprec_plotdll.pch" $(CPPFLAGS) $(CXXFLAGS)
@@ -38,7 +38,7 @@ PLOTLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\plot\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\plot\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\plot\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_plotlib.pch" $(CPPFLAGS) $(CXXFLAGS)
 PLOTLIB_OBJECTS =  \
@@ -147,6 +147,9 @@ __THREAD_DEFINE_p_1 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -268,6 +271,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -307,7 +313,7 @@ $(OBJS)\plotdll_dummy.obj: ../../src/plot\..\..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(PLOTDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\plotdll_version.res: ../../src/plot\..\..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i ..\..\src\plot\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_plot_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i ..\..\src\plot\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_plot_vc$(VENDORTAG) $**
 
 $(OBJS)\plotdll_plot.obj: ../../src/plot\plot.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(PLOTDLL_CXXFLAGS) $**
diff --git a/contrib/build/plot/makefile.wat b/contrib/build/plot/makefile.wat
index 7a2dbb6562..9c386269dc 100644
--- a/contrib/build/plot/makefile.wat
+++ b/contrib/build/plot/makefile.wat
@@ -286,7 +286,7 @@ $(OBJS)\plotdll_dummy.obj :  .AUTODEPEND ../../src/plot\..\..\..\src\msw\dummy.c
 	$(CXX) -zq -fo=$^@ $(PLOTDLL_CXXFLAGS) $<
 
 $(OBJS)\plotdll_version.res :  .AUTODEPEND ../../src/plot\..\..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\src\plot\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_plot_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\src\plot\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_plot_wat$(VENDORTAG) $<
 
 $(OBJS)\plotdll_plot.obj :  .AUTODEPEND ../../src/plot\plot.cpp
 	$(CXX) -zq -fo=$^@ $(PLOTDLL_CXXFLAGS) $<
diff --git a/contrib/build/stc/makefile.bcc b/contrib/build/stc/makefile.bcc
index 3f5db72c78..0e476e3165 100644
--- a/contrib/build/stc/makefile.bcc
+++ b/contrib/build/stc/makefile.bcc
@@ -30,7 +30,7 @@ SETUPHDIR = \
 STCDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\stc\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\stc\..\..\include -I..\..\src\stc\scintilla\include \
 	-I..\..\src\stc\scintilla\src -D__WX__ -DSCI_LEXER -DLINK_LEXERS -w-8027 \
@@ -110,7 +110,7 @@ STCDLL_OBJECTS =  \
 STCLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\stc\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\stc\..\..\include -I..\..\src\stc\scintilla\include \
 	-I..\..\src\stc\scintilla\src -D__WX__ -DSCI_LEXER -DLINK_LEXERS -w-8027 \
@@ -266,6 +266,9 @@ __THREAD_DEFINE_p_1 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -345,6 +348,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -385,7 +391,7 @@ $(LIBDIRNAME)\wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXD
 !endif
 
 $(OBJS)\stcdll_version.res: ../../src/stc\..\..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i..\..\src\stc\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_stc_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i..\..\src\stc\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_stc_bcc$(VENDORTAG) $**
 
 $(OBJS)\stcdll_PlatWX.obj: ../../src/stc\PlatWX.cpp
 	$(CXX) -q -c -P -o$@ $(STCDLL_CXXFLAGS) $**
diff --git a/contrib/build/stc/makefile.gcc b/contrib/build/stc/makefile.gcc
index 7e401b9bbe..bd59ebd213 100644
--- a/contrib/build/stc/makefile.gcc
+++ b/contrib/build/stc/makefile.gcc
@@ -22,11 +22,11 @@ SETUPHDIR = \
 STCDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\src\stc\..\..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\stc\..\..\include -I..\..\src\stc\scintilla\include \
-	-I..\..\src\stc\scintilla\src -D__WX__ -DSCI_LEXER -DLINK_LEXERS \
-	-DWXUSINGDLL -DWXMAKINGDLL_STC $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\src\stc\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I..\..\src\stc\..\..\include \
+	-I..\..\src\stc\scintilla\include -I..\..\src\stc\scintilla\src -D__WX__ \
+	-DSCI_LEXER -DLINK_LEXERS -DWXUSINGDLL -DWXMAKINGDLL_STC $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 STCDLL_OBJECTS =  \
 	$(OBJS)\stcdll_version_rc.o \
 	$(OBJS)\stcdll_PlatWX.o \
@@ -103,11 +103,11 @@ STCDLL_OBJECTS =  \
 STCLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\src\stc\..\..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\stc\..\..\include -I..\..\src\stc\scintilla\include \
-	-I..\..\src\stc\scintilla\src -D__WX__ -DSCI_LEXER -DLINK_LEXERS \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\src\stc\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I..\..\src\stc\..\..\include \
+	-I..\..\src\stc\scintilla\include -I..\..\src\stc\scintilla\src -D__WX__ \
+	-DSCI_LEXER -DLINK_LEXERS $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 STCLIB_OBJECTS =  \
 	$(OBJS)\stclib_PlatWX.o \
 	$(OBJS)\stclib_ScintillaWX.o \
@@ -254,6 +254,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(MONOLITHIC),1)
 __WXLIB_MONO_p = \
 	-lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)
@@ -345,6 +348,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 
 
 all: $(OBJS)
@@ -375,7 +381,7 @@ $(LIBDIRNAME)\libwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(
 endif
 
 $(OBJS)\stcdll_version_rc.o: ../../src/stc/../../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ../../src/stc/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_stc_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ../../src/stc/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_stc_gcc$(VENDORTAG)
 
 $(OBJS)\stcdll_PlatWX.o: ../../src/stc/PlatWX.cpp
 	$(CXX) -c -o $@ $(STCDLL_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/build/stc/makefile.vc b/contrib/build/stc/makefile.vc
index 0b7d07968e..c38b4dfdf3 100644
--- a/contrib/build/stc/makefile.vc
+++ b/contrib/build/stc/makefile.vc
@@ -24,7 +24,7 @@ STCDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_9)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\stc\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\stc\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\stc\..\..\include /I..\..\src\stc\scintilla\include \
 	/I..\..\src\stc\scintilla\src /D__WX__ /DSCI_LEXER /DLINK_LEXERS \
 	/DWXUSINGDLL /DWXMAKINGDLL_STC $(__RTTIFLAG) $(__EXCEPTIONSFLAG) $(CPPFLAGS) \
@@ -108,7 +108,7 @@ STCLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_21)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\stc\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\stc\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\stc\..\..\include /I..\..\src\stc\scintilla\include \
 	/I..\..\src\stc\scintilla\src /D__WX__ /DSCI_LEXER /DLINK_LEXERS \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
@@ -287,6 +287,9 @@ __THREAD_DEFINE_p_1 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -408,6 +411,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -444,7 +450,7 @@ $(LIBDIRNAME)\wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXD
 !endif
 
 $(OBJS)\stcdll_version.res: ../../src/stc\..\..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i ..\..\src\stc\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_stc_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i ..\..\src\stc\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_stc_vc$(VENDORTAG) $**
 
 $(OBJS)\stcdll_PlatWX.obj: ../../src/stc\PlatWX.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(STCDLL_CXXFLAGS) $**
diff --git a/contrib/build/stc/makefile.wat b/contrib/build/stc/makefile.wat
index af6b7a87da..da3cd80e06 100644
--- a/contrib/build/stc/makefile.wat
+++ b/contrib/build/stc/makefile.wat
@@ -423,7 +423,7 @@ $(LIBDIRNAME)\wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXD
 !endif
 
 $(OBJS)\stcdll_version.res :  .AUTODEPEND ../../src/stc\..\..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\src\stc\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_stc_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\src\stc\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_stc_wat$(VENDORTAG) $<
 
 $(OBJS)\stcdll_PlatWX.obj :  .AUTODEPEND ../../src/stc\PlatWX.cpp
 	$(CXX) -zq -fo=$^@ $(STCDLL_CXXFLAGS) $<
diff --git a/contrib/build/svg/makefile.bcc b/contrib/build/svg/makefile.bcc
index d5f3904aee..3994915895 100644
--- a/contrib/build/svg/makefile.bcc
+++ b/contrib/build/svg/makefile.bcc
@@ -30,7 +30,7 @@ SETUPHDIR = \
 SVGDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\svg\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\svg\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_SVG -Hu \
 	-H=$(OBJS)\wxprec_svgdll.csm $(CPPFLAGS) $(CXXFLAGS)
@@ -40,7 +40,7 @@ SVGDLL_OBJECTS =  \
 SVGLIB_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
 	-I..\..\src\svg\..\..\..\include -I$(SETUPHDIR) \
 	-I..\..\src\svg\..\..\include -Hu -H=$(OBJS)\wxprec_svglib.csm $(CPPFLAGS) \
 	$(CXXFLAGS)
@@ -126,6 +126,9 @@ __THREAD_DEFINE_p_1 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -205,6 +208,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -248,7 +254,7 @@ $(OBJS)\svgdll_dummy.obj: ../../src/svg\..\..\..\src\msw\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(SVGDLL_CXXFLAGS) -H $**
 
 $(OBJS)\svgdll_version.res: ../../src/svg\..\..\..\src\msw\version.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i..\..\src\svg\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_svg_bcc$(VENDORTAG) $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i..\..\src\svg\..\..\..\include -i$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_svg_bcc$(VENDORTAG) $**
 
 $(OBJS)\svgdll_dcsvg.obj: ../../src/svg\dcsvg.cpp
 	$(CXX) -q -c -P -o$@ $(SVGDLL_CXXFLAGS) $**
diff --git a/contrib/build/svg/makefile.gcc b/contrib/build/svg/makefile.gcc
index 38882fefe3..335fc8f287 100644
--- a/contrib/build/svg/makefile.gcc
+++ b/contrib/build/svg/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 SVGDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\src\svg\..\..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\svg\..\..\include -DWXUSINGDLL -DWXMAKINGDLL_SVG \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\src\svg\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I..\..\src\svg\..\..\include -DWXUSINGDLL \
+	-DWXMAKINGDLL_SVG $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 SVGDLL_OBJECTS =  \
 	$(OBJS)\svgdll_dummy.o \
 	$(OBJS)\svgdll_version_rc.o \
@@ -33,9 +33,9 @@ SVGDLL_OBJECTS =  \
 SVGLIB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I..\..\src\svg\..\..\..\include -I$(SETUPHDIR) -W \
-	-Wall -I..\..\src\svg\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I..\..\src\svg\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I..\..\src\svg\..\..\include $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 SVGLIB_OBJECTS =  \
 	$(OBJS)\svglib_dummy.o \
 	$(OBJS)\svglib_dcsvg.o
@@ -113,6 +113,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(MONOLITHIC),1)
 __WXLIB_MONO_p = \
 	-lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)
@@ -204,6 +207,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 
 
 all: $(OBJS)
@@ -237,7 +243,7 @@ $(OBJS)\svgdll_dummy.o: ../../src/svg/../../../src/msw/dummy.cpp
 	$(CXX) -c -o $@ $(SVGDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\svgdll_version_rc.o: ../../src/svg/../../../src/msw/version.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ../../src/svg/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_svg_gcc$(VENDORTAG)
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ../../src/svg/../../../include --include-dir $(SETUPHDIR) --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_svg_gcc$(VENDORTAG)
 
 $(OBJS)\svgdll_dcsvg.o: ../../src/svg/dcsvg.cpp
 	$(CXX) -c -o $@ $(SVGDLL_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/build/svg/makefile.vc b/contrib/build/svg/makefile.vc
index 84e0407a87..e057f07d42 100644
--- a/contrib/build/svg/makefile.vc
+++ b/contrib/build/svg/makefile.vc
@@ -24,7 +24,7 @@ SVGDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_9)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\svg\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\svg\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\svg\..\..\include /DWXUSINGDLL /DWXMAKINGDLL_SVG $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) /Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_svgdll.pch" \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -38,7 +38,7 @@ SVGLIB_CXXFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I..\..\src\svg\..\..\..\include /I$(SETUPHDIR) /W4 \
+	$(__MSLU_DEFINE_p) /I..\..\src\svg\..\..\..\include /I$(SETUPHDIR) /W4 \
 	/I..\..\src\svg\..\..\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	/Yu"wx/wxprec.h" /Fp"$(OBJS)\wxprec_svglib.pch" $(CPPFLAGS) $(CXXFLAGS)
 SVGLIB_OBJECTS =  \
@@ -147,6 +147,9 @@ __THREAD_DEFINE_p_1 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "1"
 __WXLIB_MONO_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR).lib
@@ -268,6 +271,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 
 
 all: $(OBJS)
@@ -307,7 +313,7 @@ $(OBJS)\svgdll_dummy.obj: ../../src/svg\..\..\..\src\msw\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(SVGDLL_CXXFLAGS) /Ycwx/wxprec.h $**
 
 $(OBJS)\svgdll_version.res: ../../src/svg\..\..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i ..\..\src\svg\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_svg_vc$(VENDORTAG) $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i ..\..\src\svg\..\..\..\include /i $(SETUPHDIR) /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_svg_vc$(VENDORTAG) $**
 
 $(OBJS)\svgdll_dcsvg.obj: ../../src/svg\dcsvg.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(SVGDLL_CXXFLAGS) $**
diff --git a/contrib/build/svg/makefile.wat b/contrib/build/svg/makefile.wat
index 1b13360246..84661370dd 100644
--- a/contrib/build/svg/makefile.wat
+++ b/contrib/build/svg/makefile.wat
@@ -286,7 +286,7 @@ $(OBJS)\svgdll_dummy.obj :  .AUTODEPEND ../../src/svg\..\..\..\src\msw\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(SVGDLL_CXXFLAGS) $<
 
 $(OBJS)\svgdll_version.res :  .AUTODEPEND ../../src/svg\..\..\..\src\msw\version.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=..\..\src\svg\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_svg_wat$(VENDORTAG) $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=..\..\src\svg\..\..\..\include -i=$(SETUPHDIR) -dWXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_svg_wat$(VENDORTAG) $<
 
 $(OBJS)\svgdll_dcsvg.obj :  .AUTODEPEND ../../src/svg\dcsvg.cpp
 	$(CXX) -zq -fo=$^@ $(SVGDLL_CXXFLAGS) $<
diff --git a/contrib/samples/animate/Makefile.in b/contrib/samples/animate/Makefile.in
index 1c9be1a009..cb732e335a 100644
--- a/contrib/samples/animate/Makefile.in
+++ b/contrib/samples/animate/Makefile.in
@@ -189,7 +189,7 @@ anitest_anitest.o: $(srcdir)/anitest.cpp
 	$(CXXC) -c -o $@ $(ANITEST_CXXFLAGS) $(srcdir)/anitest.cpp
 
 anitest_anitest_rc.o: $(srcdir)/anitest.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include
 
 
 # Include dependency info, if present:
diff --git a/contrib/samples/animate/makefile.bcc b/contrib/samples/animate/makefile.bcc
index 1b0df0c596..1b1f433481 100644
--- a/contrib/samples/animate/makefile.bcc
+++ b/contrib/samples/animate/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 ANITEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH -I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 ANITEST_OBJECTS =  \
 	$(OBJS)\anitest_anitest.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -219,5 +225,5 @@ $(OBJS)\anitest_anitest.obj: .\anitest.cpp
 	$(CXX) -q -c -P -o$@ $(ANITEST_CXXFLAGS) $**
 
 $(OBJS)\anitest_anitest.res: .\anitest.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH -i.\..\..\include $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH -i.\..\..\include $**
 
diff --git a/contrib/samples/animate/makefile.gcc b/contrib/samples/animate/makefile.gcc
index 1a5f9168f0..07a3c067a3 100644
--- a/contrib/samples/animate/makefile.gcc
+++ b/contrib/samples/animate/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 ANITEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH -I.\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 ANITEST_OBJECTS =  \
 	$(OBJS)\anitest_anitest.o \
 	$(OBJS)\anitest_anitest_rc.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -212,7 +218,7 @@ $(OBJS)\anitest_anitest.o: ./anitest.cpp
 	$(CXX) -c -o $@ $(ANITEST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\anitest_anitest_rc.o: ./anitest.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include
 
 .PHONY: all clean data
 
diff --git a/contrib/samples/animate/makefile.vc b/contrib/samples/animate/makefile.vc
index 08f7f88905..260145346a 100644
--- a/contrib/samples/animate/makefile.vc
+++ b/contrib/samples/animate/makefile.vc
@@ -22,10 +22,10 @@ ANITEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\anitest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	/I.\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH /I.\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 ANITEST_OBJECTS =  \
 	$(OBJS)\anitest_anitest.obj \
 	$(OBJS)\anitest_anitest.res
@@ -209,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -270,5 +276,5 @@ $(OBJS)\anitest_anitest.obj: .\anitest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(ANITEST_CXXFLAGS) $**
 
 $(OBJS)\anitest_anitest.res: .\anitest.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include $**
 
diff --git a/contrib/samples/animate/makefile.wat b/contrib/samples/animate/makefile.wat
index a3cc156389..20a9621da0 100644
--- a/contrib/samples/animate/makefile.wat
+++ b/contrib/samples/animate/makefile.wat
@@ -253,5 +253,5 @@ $(OBJS)\anitest_anitest.obj :  .AUTODEPEND .\anitest.cpp
 	$(CXX) -zq -fo=$^@ $(ANITEST_CXXFLAGS) $<
 
 $(OBJS)\anitest_anitest.res :  .AUTODEPEND .\anitest.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include $<
 
diff --git a/contrib/samples/deprecated/proplist/Makefile.in b/contrib/samples/deprecated/proplist/Makefile.in
index 4b93ac4d9e..2a20d80701 100644
--- a/contrib/samples/deprecated/proplist/Makefile.in
+++ b/contrib/samples/deprecated/proplist/Makefile.in
@@ -177,7 +177,7 @@ proplist_proplist.o: $(srcdir)/proplist.cpp
 	$(CXXC) -c -o $@ $(PROPLIST_CXXFLAGS) $(srcdir)/proplist.cpp
 
 proplist_proplist_rc.o: $(srcdir)/proplist.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../../include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../../include
 
 
 # Include dependency info, if present:
diff --git a/contrib/samples/deprecated/proplist/makefile.bcc b/contrib/samples/deprecated/proplist/makefile.bcc
index 640eb32de0..026563948c 100644
--- a/contrib/samples/deprecated/proplist/makefile.bcc
+++ b/contrib/samples/deprecated/proplist/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 PROPLIST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 PROPLIST_OBJECTS =  \
 	$(OBJS)\proplist_proplist.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -215,5 +221,5 @@ $(OBJS)\proplist_proplist.obj: .\proplist.cpp
 	$(CXX) -q -c -P -o$@ $(PROPLIST_CXXFLAGS) $**
 
 $(OBJS)\proplist_proplist.res: .\proplist.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples -dNOPCH -i.\..\..\..\include $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples -dNOPCH -i.\..\..\..\include $**
 
diff --git a/contrib/samples/deprecated/proplist/makefile.gcc b/contrib/samples/deprecated/proplist/makefile.gcc
index ba6b2cb52f..67add72be8 100644
--- a/contrib/samples/deprecated/proplist/makefile.gcc
+++ b/contrib/samples/deprecated/proplist/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 PROPLIST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 PROPLIST_OBJECTS =  \
 	$(OBJS)\proplist_proplist.o \
 	$(OBJS)\proplist_proplist_rc.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -208,7 +214,7 @@ $(OBJS)\proplist_proplist.o: ./proplist.cpp
 	$(CXX) -c -o $@ $(PROPLIST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\proplist_proplist_rc.o: ./proplist.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples --define NOPCH --include-dir ./../../../include
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples --define NOPCH --include-dir ./../../../include
 
 .PHONY: all clean
 
diff --git a/contrib/samples/deprecated/proplist/makefile.vc b/contrib/samples/deprecated/proplist/makefile.vc
index 49fbeaecbf..5f6c89174e 100644
--- a/contrib/samples/deprecated/proplist/makefile.vc
+++ b/contrib/samples/deprecated/proplist/makefile.vc
@@ -22,10 +22,10 @@ PROPLIST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\proplist.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\..\samples \
-	/DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\..\samples /DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 PROPLIST_OBJECTS =  \
 	$(OBJS)\proplist_proplist.obj \
 	$(OBJS)\proplist_proplist.res
@@ -209,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -266,5 +272,5 @@ $(OBJS)\proplist_proplist.obj: .\proplist.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(PROPLIST_CXXFLAGS) $**
 
 $(OBJS)\proplist_proplist.res: .\proplist.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples /d NOPCH /i .\..\..\..\include $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples /d NOPCH /i .\..\..\..\include $**
 
diff --git a/contrib/samples/deprecated/proplist/makefile.wat b/contrib/samples/deprecated/proplist/makefile.wat
index fa7cbecf24..e894d28a82 100644
--- a/contrib/samples/deprecated/proplist/makefile.wat
+++ b/contrib/samples/deprecated/proplist/makefile.wat
@@ -249,5 +249,5 @@ $(OBJS)\proplist_proplist.obj :  .AUTODEPEND .\proplist.cpp
 	$(CXX) -zq -fo=$^@ $(PROPLIST_CXXFLAGS) $<
 
 $(OBJS)\proplist_proplist.res :  .AUTODEPEND .\proplist.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples -dNOPCH -i=.\..\..\..\include $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples -dNOPCH -i=.\..\..\..\include $<
 
diff --git a/contrib/samples/deprecated/resource/Makefile.in b/contrib/samples/deprecated/resource/Makefile.in
index cfaf9a5d90..befe11fb5d 100644
--- a/contrib/samples/deprecated/resource/Makefile.in
+++ b/contrib/samples/deprecated/resource/Makefile.in
@@ -177,7 +177,7 @@ resource_resource.o: $(srcdir)/resource.cpp
 	$(CXXC) -c -o $@ $(RESOURCE_CXXFLAGS) $(srcdir)/resource.cpp
 
 resource_resource_rc.o: $(srcdir)/resource.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../../include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../../include
 
 
 # Include dependency info, if present:
diff --git a/contrib/samples/deprecated/resource/makefile.bcc b/contrib/samples/deprecated/resource/makefile.bcc
index 04d77af6cc..0d54947e97 100644
--- a/contrib/samples/deprecated/resource/makefile.bcc
+++ b/contrib/samples/deprecated/resource/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 RESOURCE_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 RESOURCE_OBJECTS =  \
 	$(OBJS)\resource_resource.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -215,5 +221,5 @@ $(OBJS)\resource_resource.obj: .\resource.cpp
 	$(CXX) -q -c -P -o$@ $(RESOURCE_CXXFLAGS) $**
 
 $(OBJS)\resource_resource.res: .\resource.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples -dNOPCH -i.\..\..\..\include $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples -dNOPCH -i.\..\..\..\include $**
 
diff --git a/contrib/samples/deprecated/resource/makefile.gcc b/contrib/samples/deprecated/resource/makefile.gcc
index 2d3a2414cc..c5f172f338 100644
--- a/contrib/samples/deprecated/resource/makefile.gcc
+++ b/contrib/samples/deprecated/resource/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 RESOURCE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 RESOURCE_OBJECTS =  \
 	$(OBJS)\resource_resource.o \
 	$(OBJS)\resource_resource_rc.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -208,7 +214,7 @@ $(OBJS)\resource_resource.o: ./resource.cpp
 	$(CXX) -c -o $@ $(RESOURCE_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\resource_resource_rc.o: ./resource.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples --define NOPCH --include-dir ./../../../include
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples --define NOPCH --include-dir ./../../../include
 
 .PHONY: all clean
 
diff --git a/contrib/samples/deprecated/resource/makefile.vc b/contrib/samples/deprecated/resource/makefile.vc
index a801976363..4012a7a4e6 100644
--- a/contrib/samples/deprecated/resource/makefile.vc
+++ b/contrib/samples/deprecated/resource/makefile.vc
@@ -22,10 +22,10 @@ RESOURCE_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\resource.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\..\samples \
-	/DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\..\samples /DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 RESOURCE_OBJECTS =  \
 	$(OBJS)\resource_resource.obj \
 	$(OBJS)\resource_resource.res
@@ -209,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -266,5 +272,5 @@ $(OBJS)\resource_resource.obj: .\resource.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(RESOURCE_CXXFLAGS) $**
 
 $(OBJS)\resource_resource.res: .\resource.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples /d NOPCH /i .\..\..\..\include $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples /d NOPCH /i .\..\..\..\include $**
 
diff --git a/contrib/samples/deprecated/resource/makefile.wat b/contrib/samples/deprecated/resource/makefile.wat
index dac57f9098..2d67156b28 100644
--- a/contrib/samples/deprecated/resource/makefile.wat
+++ b/contrib/samples/deprecated/resource/makefile.wat
@@ -249,5 +249,5 @@ $(OBJS)\resource_resource.obj :  .AUTODEPEND .\resource.cpp
 	$(CXX) -zq -fo=$^@ $(RESOURCE_CXXFLAGS) $<
 
 $(OBJS)\resource_resource.res :  .AUTODEPEND .\resource.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples -dNOPCH -i=.\..\..\..\include $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples -dNOPCH -i=.\..\..\..\include $<
 
diff --git a/contrib/samples/deprecated/treelay/Makefile.in b/contrib/samples/deprecated/treelay/Makefile.in
index b033f20709..2ccc41d69b 100644
--- a/contrib/samples/deprecated/treelay/Makefile.in
+++ b/contrib/samples/deprecated/treelay/Makefile.in
@@ -177,7 +177,7 @@ treelay_treelay.o: $(srcdir)/treelay.cpp
 	$(CXXC) -c -o $@ $(TREELAY_CXXFLAGS) $(srcdir)/treelay.cpp
 
 treelay_treelay_rc.o: $(srcdir)/treelay.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../../include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../../include
 
 
 # Include dependency info, if present:
diff --git a/contrib/samples/deprecated/treelay/makefile.bcc b/contrib/samples/deprecated/treelay/makefile.bcc
index ac3310f7f5..eda4f6326c 100644
--- a/contrib/samples/deprecated/treelay/makefile.bcc
+++ b/contrib/samples/deprecated/treelay/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 TREELAY_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 TREELAY_OBJECTS =  \
 	$(OBJS)\treelay_treelay.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -215,5 +221,5 @@ $(OBJS)\treelay_treelay.obj: .\treelay.cpp
 	$(CXX) -q -c -P -o$@ $(TREELAY_CXXFLAGS) $**
 
 $(OBJS)\treelay_treelay.res: .\treelay.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples -dNOPCH -i.\..\..\..\include $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples -dNOPCH -i.\..\..\..\include $**
 
diff --git a/contrib/samples/deprecated/treelay/makefile.gcc b/contrib/samples/deprecated/treelay/makefile.gcc
index cc03d0865f..c9d34c4407 100644
--- a/contrib/samples/deprecated/treelay/makefile.gcc
+++ b/contrib/samples/deprecated/treelay/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 TREELAY_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TREELAY_OBJECTS =  \
 	$(OBJS)\treelay_treelay.o \
 	$(OBJS)\treelay_treelay_rc.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -208,7 +214,7 @@ $(OBJS)\treelay_treelay.o: ./treelay.cpp
 	$(CXX) -c -o $@ $(TREELAY_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\treelay_treelay_rc.o: ./treelay.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples --define NOPCH --include-dir ./../../../include
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples --define NOPCH --include-dir ./../../../include
 
 .PHONY: all clean
 
diff --git a/contrib/samples/deprecated/treelay/makefile.vc b/contrib/samples/deprecated/treelay/makefile.vc
index 23d46a000a..e87e851672 100644
--- a/contrib/samples/deprecated/treelay/makefile.vc
+++ b/contrib/samples/deprecated/treelay/makefile.vc
@@ -22,10 +22,10 @@ TREELAY_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\treelay.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\..\samples \
-	/DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\..\samples /DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 TREELAY_OBJECTS =  \
 	$(OBJS)\treelay_treelay.obj \
 	$(OBJS)\treelay_treelay.res
@@ -209,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -266,5 +272,5 @@ $(OBJS)\treelay_treelay.obj: .\treelay.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(TREELAY_CXXFLAGS) $**
 
 $(OBJS)\treelay_treelay.res: .\treelay.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples /d NOPCH /i .\..\..\..\include $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples /d NOPCH /i .\..\..\..\include $**
 
diff --git a/contrib/samples/deprecated/treelay/makefile.wat b/contrib/samples/deprecated/treelay/makefile.wat
index 068ac6eff7..c8a5bca586 100644
--- a/contrib/samples/deprecated/treelay/makefile.wat
+++ b/contrib/samples/deprecated/treelay/makefile.wat
@@ -249,5 +249,5 @@ $(OBJS)\treelay_treelay.obj :  .AUTODEPEND .\treelay.cpp
 	$(CXX) -zq -fo=$^@ $(TREELAY_CXXFLAGS) $<
 
 $(OBJS)\treelay_treelay.res :  .AUTODEPEND .\treelay.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples -dNOPCH -i=.\..\..\..\include $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples -dNOPCH -i=.\..\..\..\include $<
 
diff --git a/contrib/samples/fl/Makefile.in b/contrib/samples/fl/Makefile.in
index 548cf19b7c..c99d2827ec 100644
--- a/contrib/samples/fl/Makefile.in
+++ b/contrib/samples/fl/Makefile.in
@@ -421,31 +421,31 @@ fl_demo1_fl_demo1.o: $(srcdir)/fl_demo1.cpp
 	$(CXXC) -c -o $@ $(FL_DEMO1_CXXFLAGS) $(srcdir)/fl_demo1.cpp
 
 fl_demo1_fl_demo1_rc.o: $(srcdir)/fl_demo1.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1_3)  $(__EXCEPTIONS_DEFINE_p_1_3) $(__RTTI_DEFINE_p_1_3) $(__THREAD_DEFINE_p_1_3)  --include-dir $(srcdir) $(__DLLFLAG_p_1_3) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include --define BMP_DIR="bitmaps/"
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1_3)  $(__EXCEPTIONS_DEFINE_p_1_3) $(__RTTI_DEFINE_p_1_3) $(__THREAD_DEFINE_p_1_3)   --include-dir $(srcdir) $(__DLLFLAG_p_1_3) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include --define BMP_DIR="bitmaps/"
 
 fl_demo2_fl_demo2.o: $(srcdir)/fl_demo2.cpp
 	$(CXXC) -c -o $@ $(FL_DEMO2_CXXFLAGS) $(srcdir)/fl_demo2.cpp
 
 fl_demo2_fl_demo2_rc.o: $(srcdir)/fl_demo2.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1_3)  $(__EXCEPTIONS_DEFINE_p_1_3) $(__RTTI_DEFINE_p_1_3) $(__THREAD_DEFINE_p_1_3)  --include-dir $(srcdir) $(__DLLFLAG_p_1_3) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include --define BMP_DIR="bitmaps/"
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1_3)  $(__EXCEPTIONS_DEFINE_p_1_3) $(__RTTI_DEFINE_p_1_3) $(__THREAD_DEFINE_p_1_3)   --include-dir $(srcdir) $(__DLLFLAG_p_1_3) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include --define BMP_DIR="bitmaps/"
 
 fl_sample1_fl_sample1.o: $(srcdir)/fl_sample1.cpp
 	$(CXXC) -c -o $@ $(FL_SAMPLE1_CXXFLAGS) $(srcdir)/fl_sample1.cpp
 
 fl_sample1_fl_sample1_rc.o: $(srcdir)/fl_sample1.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1_3)  $(__EXCEPTIONS_DEFINE_p_1_3) $(__RTTI_DEFINE_p_1_3) $(__THREAD_DEFINE_p_1_3)  --include-dir $(srcdir) $(__DLLFLAG_p_1_3) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include --define BMP_DIR="bitmaps/"
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1_3)  $(__EXCEPTIONS_DEFINE_p_1_3) $(__RTTI_DEFINE_p_1_3) $(__THREAD_DEFINE_p_1_3)   --include-dir $(srcdir) $(__DLLFLAG_p_1_3) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include --define BMP_DIR="bitmaps/"
 
 fl_sample2_fl_sample2.o: $(srcdir)/fl_sample2.cpp
 	$(CXXC) -c -o $@ $(FL_SAMPLE2_CXXFLAGS) $(srcdir)/fl_sample2.cpp
 
 fl_sample2_fl_sample2_rc.o: $(srcdir)/fl_sample2.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1_3)  $(__EXCEPTIONS_DEFINE_p_1_3) $(__RTTI_DEFINE_p_1_3) $(__THREAD_DEFINE_p_1_3)  --include-dir $(srcdir) $(__DLLFLAG_p_1_3) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include --define BMP_DIR="bitmaps/"
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1_3)  $(__EXCEPTIONS_DEFINE_p_1_3) $(__RTTI_DEFINE_p_1_3) $(__THREAD_DEFINE_p_1_3)   --include-dir $(srcdir) $(__DLLFLAG_p_1_3) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include --define BMP_DIR="bitmaps/"
 
 fl_sample3_fl_sample3.o: $(srcdir)/fl_sample3.cpp
 	$(CXXC) -c -o $@ $(FL_SAMPLE3_CXXFLAGS) $(srcdir)/fl_sample3.cpp
 
 fl_sample3_fl_sample3_rc.o: $(srcdir)/fl_sample3.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1_3)  $(__EXCEPTIONS_DEFINE_p_1_3) $(__RTTI_DEFINE_p_1_3) $(__THREAD_DEFINE_p_1_3)  --include-dir $(srcdir) $(__DLLFLAG_p_1_3) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include --define BMP_DIR="bitmaps/"
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1_3)  $(__EXCEPTIONS_DEFINE_p_1_3) $(__RTTI_DEFINE_p_1_3) $(__THREAD_DEFINE_p_1_3)   --include-dir $(srcdir) $(__DLLFLAG_p_1_3) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include --define BMP_DIR="bitmaps/"
 
 
 # Include dependency info, if present:
diff --git a/contrib/samples/fl/makefile.bcc b/contrib/samples/fl/makefile.bcc
index 171e1a796e..60d2276b81 100644
--- a/contrib/samples/fl/makefile.bcc
+++ b/contrib/samples/fl/makefile.bcc
@@ -30,41 +30,41 @@ SETUPHDIR = \
 FL_DEMO1_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_7) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH -I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(CPPFLAGS) $(CXXFLAGS)
 FL_DEMO1_OBJECTS =  \
 	$(OBJS)\fl_demo1_fl_demo1.obj
 FL_DEMO2_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_7) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH -I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(CPPFLAGS) $(CXXFLAGS)
 FL_DEMO2_OBJECTS =  \
 	$(OBJS)\fl_demo2_fl_demo2.obj
 FL_SAMPLE1_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_7) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH -I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(CPPFLAGS) $(CXXFLAGS)
 FL_SAMPLE1_OBJECTS =  \
 	$(OBJS)\fl_sample1_fl_sample1.obj
 FL_SAMPLE2_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_7) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH -I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(CPPFLAGS) $(CXXFLAGS)
 FL_SAMPLE2_OBJECTS =  \
 	$(OBJS)\fl_sample2_fl_sample2.obj
 FL_SAMPLE3_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_7) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH -I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(CPPFLAGS) $(CXXFLAGS)
 FL_SAMPLE3_OBJECTS =  \
 	$(OBJS)\fl_sample3_fl_sample3.obj
 
@@ -175,6 +175,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_12 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_12 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -295,29 +301,29 @@ $(OBJS)\fl_demo1_fl_demo1.obj: .\fl_demo1.cpp
 	$(CXX) -q -c -P -o$@ $(FL_DEMO1_CXXFLAGS) $**
 
 $(OBJS)\fl_demo1_fl_demo1.res: .\fl_demo1.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_12) -i.\..\..\..\samples -dNOPCH -i.\..\..\include -dBMP_DIR="bitmaps/" $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_12) -i.\..\..\..\samples -dNOPCH -i.\..\..\include -dBMP_DIR="bitmaps/" $**
 
 $(OBJS)\fl_demo2_fl_demo2.obj: .\fl_demo2.cpp
 	$(CXX) -q -c -P -o$@ $(FL_DEMO2_CXXFLAGS) $**
 
 $(OBJS)\fl_demo2_fl_demo2.res: .\fl_demo2.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_12) -i.\..\..\..\samples -dNOPCH -i.\..\..\include -dBMP_DIR="bitmaps/" $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_12) -i.\..\..\..\samples -dNOPCH -i.\..\..\include -dBMP_DIR="bitmaps/" $**
 
 $(OBJS)\fl_sample1_fl_sample1.obj: .\fl_sample1.cpp
 	$(CXX) -q -c -P -o$@ $(FL_SAMPLE1_CXXFLAGS) $**
 
 $(OBJS)\fl_sample1_fl_sample1.res: .\fl_sample1.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_12) -i.\..\..\..\samples -dNOPCH -i.\..\..\include -dBMP_DIR="bitmaps/" $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_12) -i.\..\..\..\samples -dNOPCH -i.\..\..\include -dBMP_DIR="bitmaps/" $**
 
 $(OBJS)\fl_sample2_fl_sample2.obj: .\fl_sample2.cpp
 	$(CXX) -q -c -P -o$@ $(FL_SAMPLE2_CXXFLAGS) $**
 
 $(OBJS)\fl_sample2_fl_sample2.res: .\fl_sample2.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_12) -i.\..\..\..\samples -dNOPCH -i.\..\..\include -dBMP_DIR="bitmaps/" $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_12) -i.\..\..\..\samples -dNOPCH -i.\..\..\include -dBMP_DIR="bitmaps/" $**
 
 $(OBJS)\fl_sample3_fl_sample3.obj: .\fl_sample3.cpp
 	$(CXX) -q -c -P -o$@ $(FL_SAMPLE3_CXXFLAGS) $**
 
 $(OBJS)\fl_sample3_fl_sample3.res: .\fl_sample3.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_12) -i.\..\..\..\samples -dNOPCH -i.\..\..\include -dBMP_DIR="bitmaps/" $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_12) -i.\..\..\..\samples -dNOPCH -i.\..\..\include -dBMP_DIR="bitmaps/" $**
 
diff --git a/contrib/samples/fl/makefile.gcc b/contrib/samples/fl/makefile.gcc
index ef9568b842..1c4e6a99dc 100644
--- a/contrib/samples/fl/makefile.gcc
+++ b/contrib/samples/fl/makefile.gcc
@@ -22,50 +22,55 @@ SETUPHDIR = \
 FL_DEMO1_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH -I.\..\..\include -DBMP_DIR=\"bitmaps/\" \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 FL_DEMO1_OBJECTS =  \
 	$(OBJS)\fl_demo1_fl_demo1.o \
 	$(OBJS)\fl_demo1_fl_demo1_rc.o
 FL_DEMO2_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH -I.\..\..\include -DBMP_DIR=\"bitmaps/\" \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 FL_DEMO2_OBJECTS =  \
 	$(OBJS)\fl_demo2_fl_demo2.o \
 	$(OBJS)\fl_demo2_fl_demo2_rc.o
 FL_SAMPLE1_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH -I.\..\..\include -DBMP_DIR=\"bitmaps/\" \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 FL_SAMPLE1_OBJECTS =  \
 	$(OBJS)\fl_sample1_fl_sample1.o \
 	$(OBJS)\fl_sample1_fl_sample1_rc.o
 FL_SAMPLE2_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH -I.\..\..\include -DBMP_DIR=\"bitmaps/\" \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 FL_SAMPLE2_OBJECTS =  \
 	$(OBJS)\fl_sample2_fl_sample2.o \
 	$(OBJS)\fl_sample2_fl_sample2_rc.o
 FL_SAMPLE3_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include -DBMP_DIR=\"bitmaps/\" $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH -I.\..\..\include -DBMP_DIR=\"bitmaps/\" \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 FL_SAMPLE3_OBJECTS =  \
 	$(OBJS)\fl_sample3_fl_sample3.o \
 	$(OBJS)\fl_sample3_fl_sample3_rc.o
@@ -174,6 +179,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_12 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_12 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -268,31 +279,31 @@ $(OBJS)\fl_demo1_fl_demo1.o: ./fl_demo1.cpp
 	$(CXX) -c -o $@ $(FL_DEMO1_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\fl_demo1_fl_demo1_rc.o: ./fl_demo1.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_12) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include --define BMP_DIR="bitmaps/"
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_12) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include --define BMP_DIR="bitmaps/"
 
 $(OBJS)\fl_demo2_fl_demo2.o: ./fl_demo2.cpp
 	$(CXX) -c -o $@ $(FL_DEMO2_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\fl_demo2_fl_demo2_rc.o: ./fl_demo2.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_12) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include --define BMP_DIR="bitmaps/"
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_12) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include --define BMP_DIR="bitmaps/"
 
 $(OBJS)\fl_sample1_fl_sample1.o: ./fl_sample1.cpp
 	$(CXX) -c -o $@ $(FL_SAMPLE1_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\fl_sample1_fl_sample1_rc.o: ./fl_sample1.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_12) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include --define BMP_DIR="bitmaps/"
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_12) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include --define BMP_DIR="bitmaps/"
 
 $(OBJS)\fl_sample2_fl_sample2.o: ./fl_sample2.cpp
 	$(CXX) -c -o $@ $(FL_SAMPLE2_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\fl_sample2_fl_sample2_rc.o: ./fl_sample2.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_12) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include --define BMP_DIR="bitmaps/"
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_12) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include --define BMP_DIR="bitmaps/"
 
 $(OBJS)\fl_sample3_fl_sample3.o: ./fl_sample3.cpp
 	$(CXX) -c -o $@ $(FL_SAMPLE3_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\fl_sample3_fl_sample3_rc.o: ./fl_sample3.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_12) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include --define BMP_DIR="bitmaps/"
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_12) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include --define BMP_DIR="bitmaps/"
 
 .PHONY: all clean data_files
 
diff --git a/contrib/samples/fl/makefile.vc b/contrib/samples/fl/makefile.vc
index 1a9b0a5b82..c37b7d7abc 100644
--- a/contrib/samples/fl/makefile.vc
+++ b/contrib/samples/fl/makefile.vc
@@ -22,10 +22,10 @@ FL_DEMO1_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) /Fd$(OBJS)\fl_demo1.pdb $(____DEBUGRUNTIME) \
 	$(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	/I.\..\..\include /DBMP_DIR=\"bitmaps/\" $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH /I.\..\..\include /DBMP_DIR=\"bitmaps/\" \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
 FL_DEMO1_OBJECTS =  \
 	$(OBJS)\fl_demo1_fl_demo1.obj \
 	$(OBJS)\fl_demo1_fl_demo1.res
@@ -33,10 +33,10 @@ FL_DEMO2_CXXFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) /Fd$(OBJS)\fl_demo2.pdb $(____DEBUGRUNTIME) \
 	$(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	/I.\..\..\include /DBMP_DIR=\"bitmaps/\" $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH /I.\..\..\include /DBMP_DIR=\"bitmaps/\" \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
 FL_DEMO2_OBJECTS =  \
 	$(OBJS)\fl_demo2_fl_demo2.obj \
 	$(OBJS)\fl_demo2_fl_demo2.res
@@ -44,10 +44,10 @@ FL_SAMPLE1_CXXFLAGS = /M$(__RUNTIME_LIBS_36)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) /Fd$(OBJS)\fl_sample1.pdb $(____DEBUGRUNTIME) \
 	$(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	/I.\..\..\include /DBMP_DIR=\"bitmaps/\" $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH /I.\..\..\include /DBMP_DIR=\"bitmaps/\" \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
 FL_SAMPLE1_OBJECTS =  \
 	$(OBJS)\fl_sample1_fl_sample1.obj \
 	$(OBJS)\fl_sample1_fl_sample1.res
@@ -55,10 +55,10 @@ FL_SAMPLE2_CXXFLAGS = /M$(__RUNTIME_LIBS_50)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) /Fd$(OBJS)\fl_sample2.pdb $(____DEBUGRUNTIME) \
 	$(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	/I.\..\..\include /DBMP_DIR=\"bitmaps/\" $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH /I.\..\..\include /DBMP_DIR=\"bitmaps/\" \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
 FL_SAMPLE2_OBJECTS =  \
 	$(OBJS)\fl_sample2_fl_sample2.obj \
 	$(OBJS)\fl_sample2_fl_sample2.res
@@ -66,10 +66,10 @@ FL_SAMPLE3_CXXFLAGS = /M$(__RUNTIME_LIBS_64)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) /Fd$(OBJS)\fl_sample3.pdb $(____DEBUGRUNTIME) \
 	$(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	/I.\..\..\include /DBMP_DIR=\"bitmaps/\" $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH /I.\..\..\include /DBMP_DIR=\"bitmaps/\" \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
 FL_SAMPLE3_OBJECTS =  \
 	$(OBJS)\fl_sample3_fl_sample3.obj \
 	$(OBJS)\fl_sample3_fl_sample3.res
@@ -277,6 +277,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_12 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_12 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -370,29 +376,29 @@ $(OBJS)\fl_demo1_fl_demo1.obj: .\fl_demo1.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(FL_DEMO1_CXXFLAGS) $**
 
 $(OBJS)\fl_demo1_fl_demo1.res: .\fl_demo1.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3) $(__NO_VC_CRTDBG_p_12)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_12) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include /d BMP_DIR="bitmaps/" $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3) $(__NO_VC_CRTDBG_p_12)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_12) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include /d BMP_DIR="bitmaps/" $**
 
 $(OBJS)\fl_demo2_fl_demo2.obj: .\fl_demo2.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(FL_DEMO2_CXXFLAGS) $**
 
 $(OBJS)\fl_demo2_fl_demo2.res: .\fl_demo2.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3) $(__NO_VC_CRTDBG_p_12)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_12) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include /d BMP_DIR="bitmaps/" $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3) $(__NO_VC_CRTDBG_p_12)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_12) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include /d BMP_DIR="bitmaps/" $**
 
 $(OBJS)\fl_sample1_fl_sample1.obj: .\fl_sample1.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(FL_SAMPLE1_CXXFLAGS) $**
 
 $(OBJS)\fl_sample1_fl_sample1.res: .\fl_sample1.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3) $(__NO_VC_CRTDBG_p_12)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_12) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include /d BMP_DIR="bitmaps/" $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3) $(__NO_VC_CRTDBG_p_12)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_12) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include /d BMP_DIR="bitmaps/" $**
 
 $(OBJS)\fl_sample2_fl_sample2.obj: .\fl_sample2.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(FL_SAMPLE2_CXXFLAGS) $**
 
 $(OBJS)\fl_sample2_fl_sample2.res: .\fl_sample2.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3) $(__NO_VC_CRTDBG_p_12)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_12) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include /d BMP_DIR="bitmaps/" $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3) $(__NO_VC_CRTDBG_p_12)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_12) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include /d BMP_DIR="bitmaps/" $**
 
 $(OBJS)\fl_sample3_fl_sample3.obj: .\fl_sample3.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(FL_SAMPLE3_CXXFLAGS) $**
 
 $(OBJS)\fl_sample3_fl_sample3.res: .\fl_sample3.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3) $(__NO_VC_CRTDBG_p_12)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_12) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include /d BMP_DIR="bitmaps/" $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_3) $(__NO_VC_CRTDBG_p_12)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_12) $(__DEBUG_DEFINE_p_12) $(__EXCEPTIONS_DEFINE_p_12) $(__RTTI_DEFINE_p_12) $(__THREAD_DEFINE_p_12) $(__UNICODE_DEFINE_p_12) $(__MSLU_DEFINE_p_12) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_12) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include /d BMP_DIR="bitmaps/" $**
 
diff --git a/contrib/samples/fl/makefile.wat b/contrib/samples/fl/makefile.wat
index a55996f3a9..6f89f2b5fc 100644
--- a/contrib/samples/fl/makefile.wat
+++ b/contrib/samples/fl/makefile.wat
@@ -337,29 +337,29 @@ $(OBJS)\fl_demo1_fl_demo1.obj :  .AUTODEPEND .\fl_demo1.cpp
 	$(CXX) -zq -fo=$^@ $(FL_DEMO1_CXXFLAGS) $<
 
 $(OBJS)\fl_demo1_fl_demo1.res :  .AUTODEPEND .\fl_demo1.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include -dBMP_DIR="bitmaps/" $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include -dBMP_DIR="bitmaps/" $<
 
 $(OBJS)\fl_demo2_fl_demo2.obj :  .AUTODEPEND .\fl_demo2.cpp
 	$(CXX) -zq -fo=$^@ $(FL_DEMO2_CXXFLAGS) $<
 
 $(OBJS)\fl_demo2_fl_demo2.res :  .AUTODEPEND .\fl_demo2.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include -dBMP_DIR="bitmaps/" $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include -dBMP_DIR="bitmaps/" $<
 
 $(OBJS)\fl_sample1_fl_sample1.obj :  .AUTODEPEND .\fl_sample1.cpp
 	$(CXX) -zq -fo=$^@ $(FL_SAMPLE1_CXXFLAGS) $<
 
 $(OBJS)\fl_sample1_fl_sample1.res :  .AUTODEPEND .\fl_sample1.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include -dBMP_DIR="bitmaps/" $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include -dBMP_DIR="bitmaps/" $<
 
 $(OBJS)\fl_sample2_fl_sample2.obj :  .AUTODEPEND .\fl_sample2.cpp
 	$(CXX) -zq -fo=$^@ $(FL_SAMPLE2_CXXFLAGS) $<
 
 $(OBJS)\fl_sample2_fl_sample2.res :  .AUTODEPEND .\fl_sample2.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include -dBMP_DIR="bitmaps/" $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include -dBMP_DIR="bitmaps/" $<
 
 $(OBJS)\fl_sample3_fl_sample3.obj :  .AUTODEPEND .\fl_sample3.cpp
 	$(CXX) -zq -fo=$^@ $(FL_SAMPLE3_CXXFLAGS) $<
 
 $(OBJS)\fl_sample3_fl_sample3.res :  .AUTODEPEND .\fl_sample3.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include -dBMP_DIR="bitmaps/" $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include -dBMP_DIR="bitmaps/" $<
 
diff --git a/contrib/samples/foldbar/extended/Makefile.in b/contrib/samples/foldbar/extended/Makefile.in
index ab1995c7ae..05b1a47cdb 100644
--- a/contrib/samples/foldbar/extended/Makefile.in
+++ b/contrib/samples/foldbar/extended/Makefile.in
@@ -182,7 +182,7 @@ extended_extended.o: $(srcdir)/extended.cpp
 	$(CXXC) -c -o $@ $(EXTENDED_CXXFLAGS) $(srcdir)/extended.cpp
 
 extended_extended_rc.o: $(srcdir)/extended.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../../include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../../include
 
 
 # Include dependency info, if present:
diff --git a/contrib/samples/foldbar/extended/makefile.bcc b/contrib/samples/foldbar/extended/makefile.bcc
index 91b4a34186..56b35e2dfe 100644
--- a/contrib/samples/foldbar/extended/makefile.bcc
+++ b/contrib/samples/foldbar/extended/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 EXTENDED_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 EXTENDED_OBJECTS =  \
 	$(OBJS)\extended_extended.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -219,5 +225,5 @@ $(OBJS)\extended_extended.obj: .\extended.cpp
 	$(CXX) -q -c -P -o$@ $(EXTENDED_CXXFLAGS) $**
 
 $(OBJS)\extended_extended.res: .\extended.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples -dNOPCH -i.\..\..\..\include $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples -dNOPCH -i.\..\..\..\include $**
 
diff --git a/contrib/samples/foldbar/extended/makefile.gcc b/contrib/samples/foldbar/extended/makefile.gcc
index e96d696954..881dd8fe83 100644
--- a/contrib/samples/foldbar/extended/makefile.gcc
+++ b/contrib/samples/foldbar/extended/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 EXTENDED_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 EXTENDED_OBJECTS =  \
 	$(OBJS)\extended_extended.o \
 	$(OBJS)\extended_extended_rc.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -212,7 +218,7 @@ $(OBJS)\extended_extended.o: ./extended.cpp
 	$(CXX) -c -o $@ $(EXTENDED_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\extended_extended_rc.o: ./extended.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples --define NOPCH --include-dir ./../../../include
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples --define NOPCH --include-dir ./../../../include
 
 .PHONY: all clean
 
diff --git a/contrib/samples/foldbar/extended/makefile.vc b/contrib/samples/foldbar/extended/makefile.vc
index 8e99d6592a..3cc1754501 100644
--- a/contrib/samples/foldbar/extended/makefile.vc
+++ b/contrib/samples/foldbar/extended/makefile.vc
@@ -22,10 +22,10 @@ EXTENDED_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\extended.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\..\samples \
-	/DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\..\samples /DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 EXTENDED_OBJECTS =  \
 	$(OBJS)\extended_extended.obj \
 	$(OBJS)\extended_extended.res
@@ -209,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -270,5 +276,5 @@ $(OBJS)\extended_extended.obj: .\extended.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(EXTENDED_CXXFLAGS) $**
 
 $(OBJS)\extended_extended.res: .\extended.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples /d NOPCH /i .\..\..\..\include $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples /d NOPCH /i .\..\..\..\include $**
 
diff --git a/contrib/samples/foldbar/extended/makefile.wat b/contrib/samples/foldbar/extended/makefile.wat
index 8082191cce..be1398340b 100644
--- a/contrib/samples/foldbar/extended/makefile.wat
+++ b/contrib/samples/foldbar/extended/makefile.wat
@@ -254,5 +254,5 @@ $(OBJS)\extended_extended.obj :  .AUTODEPEND .\extended.cpp
 	$(CXX) -zq -fo=$^@ $(EXTENDED_CXXFLAGS) $<
 
 $(OBJS)\extended_extended.res :  .AUTODEPEND .\extended.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples -dNOPCH -i=.\..\..\..\include $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples -dNOPCH -i=.\..\..\..\include $<
 
diff --git a/contrib/samples/foldbar/foldpanelbar/Makefile.in b/contrib/samples/foldbar/foldpanelbar/Makefile.in
index 960369807c..e980175fd1 100644
--- a/contrib/samples/foldbar/foldpanelbar/Makefile.in
+++ b/contrib/samples/foldbar/foldpanelbar/Makefile.in
@@ -190,7 +190,7 @@ foldtest_test.o: $(srcdir)/test.cpp
 	$(CXXC) -c -o $@ $(FOLDTEST_CXXFLAGS) $(srcdir)/test.cpp
 
 foldtest_foldpanelbartest_rc.o: $(srcdir)/foldpanelbartest.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../../include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../../include
 
 
 # Include dependency info, if present:
diff --git a/contrib/samples/foldbar/foldpanelbar/makefile.bcc b/contrib/samples/foldbar/foldpanelbar/makefile.bcc
index 5f837eeb3f..bd4e19f4a5 100644
--- a/contrib/samples/foldbar/foldpanelbar/makefile.bcc
+++ b/contrib/samples/foldbar/foldpanelbar/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 FOLDTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 FOLDTEST_OBJECTS =  \
 	$(OBJS)\foldtest_foldpanelbartest.obj \
 	$(OBJS)\foldtest_foldtestpanel.obj \
@@ -146,6 +146,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -227,5 +233,5 @@ $(OBJS)\foldtest_test.obj: .\test.cpp
 	$(CXX) -q -c -P -o$@ $(FOLDTEST_CXXFLAGS) $**
 
 $(OBJS)\foldtest_foldpanelbartest.res: .\foldpanelbartest.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples -dNOPCH -i.\..\..\..\include $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples -dNOPCH -i.\..\..\..\include $**
 
diff --git a/contrib/samples/foldbar/foldpanelbar/makefile.gcc b/contrib/samples/foldbar/foldpanelbar/makefile.gcc
index 235a7aa976..d10e424c89 100644
--- a/contrib/samples/foldbar/foldpanelbar/makefile.gcc
+++ b/contrib/samples/foldbar/foldpanelbar/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 FOLDTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 FOLDTEST_OBJECTS =  \
 	$(OBJS)\foldtest_foldpanelbartest.o \
 	$(OBJS)\foldtest_foldtestpanel.o \
@@ -137,6 +137,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -220,7 +226,7 @@ $(OBJS)\foldtest_test.o: ./test.cpp
 	$(CXX) -c -o $@ $(FOLDTEST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\foldtest_foldpanelbartest_rc.o: ./foldpanelbartest.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples --define NOPCH --include-dir ./../../../include
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples --define NOPCH --include-dir ./../../../include
 
 .PHONY: all clean
 
diff --git a/contrib/samples/foldbar/foldpanelbar/makefile.vc b/contrib/samples/foldbar/foldpanelbar/makefile.vc
index e7a34099d0..b7d4cdde9f 100644
--- a/contrib/samples/foldbar/foldpanelbar/makefile.vc
+++ b/contrib/samples/foldbar/foldpanelbar/makefile.vc
@@ -22,10 +22,10 @@ FOLDTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\foldtest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\..\samples \
-	/DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\..\samples /DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 FOLDTEST_OBJECTS =  \
 	$(OBJS)\foldtest_foldpanelbartest.obj \
 	$(OBJS)\foldtest_foldtestpanel.obj \
@@ -212,6 +212,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -278,5 +284,5 @@ $(OBJS)\foldtest_test.obj: .\test.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(FOLDTEST_CXXFLAGS) $**
 
 $(OBJS)\foldtest_foldpanelbartest.res: .\foldpanelbartest.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples /d NOPCH /i .\..\..\..\include $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples /d NOPCH /i .\..\..\..\include $**
 
diff --git a/contrib/samples/foldbar/foldpanelbar/makefile.wat b/contrib/samples/foldbar/foldpanelbar/makefile.wat
index 67d2f521d2..751ca6dc2f 100644
--- a/contrib/samples/foldbar/foldpanelbar/makefile.wat
+++ b/contrib/samples/foldbar/foldpanelbar/makefile.wat
@@ -261,5 +261,5 @@ $(OBJS)\foldtest_test.obj :  .AUTODEPEND .\test.cpp
 	$(CXX) -zq -fo=$^@ $(FOLDTEST_CXXFLAGS) $<
 
 $(OBJS)\foldtest_foldpanelbartest.res :  .AUTODEPEND .\foldpanelbartest.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples -dNOPCH -i=.\..\..\..\include $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples -dNOPCH -i=.\..\..\..\include $<
 
diff --git a/contrib/samples/gizmos/dynsash/Makefile.in b/contrib/samples/gizmos/dynsash/Makefile.in
index ff71537e8b..4f80b031e3 100644
--- a/contrib/samples/gizmos/dynsash/Makefile.in
+++ b/contrib/samples/gizmos/dynsash/Makefile.in
@@ -178,7 +178,7 @@ dynsash.app/Contents/PkgInfo: dynsash$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info
 @COND_PLATFORM_MACOSX_1@dynsash_bundle: $(____dynsash_BUNDLE_TGT_REF_DEP)
 
 dynsash_sample_rc.o: $(srcdir)/../../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include
 
 dynsash_dynsash.o: $(srcdir)/dynsash.cpp
 	$(CXXC) -c -o $@ $(DYNSASH_CXXFLAGS) $(srcdir)/dynsash.cpp
diff --git a/contrib/samples/gizmos/dynsash/makefile.bcc b/contrib/samples/gizmos/dynsash/makefile.bcc
index 13940c7c81..d8c33febe9 100644
--- a/contrib/samples/gizmos/dynsash/makefile.bcc
+++ b/contrib/samples/gizmos/dynsash/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 DYNSASH_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 DYNSASH_OBJECTS =  \
 	$(OBJS)\dynsash_dynsash.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -216,7 +222,7 @@ $(OBJS)\dynsash.exe: $(DYNSASH_OBJECTS)  $(OBJS)\dynsash_sample.res
 |
 
 $(OBJS)\dynsash_sample.res: .\..\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples $**
 
 $(OBJS)\dynsash_dynsash.obj: .\dynsash.cpp
 	$(CXX) -q -c -P -o$@ $(DYNSASH_CXXFLAGS) $**
diff --git a/contrib/samples/gizmos/dynsash/makefile.gcc b/contrib/samples/gizmos/dynsash/makefile.gcc
index 5a9b7b79f4..8baeff33aa 100644
--- a/contrib/samples/gizmos/dynsash/makefile.gcc
+++ b/contrib/samples/gizmos/dynsash/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 DYNSASH_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 DYNSASH_OBJECTS =  \
 	$(OBJS)\dynsash_sample_rc.o \
 	$(OBJS)\dynsash_dynsash.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -209,7 +215,7 @@ $(OBJS)\dynsash.exe: $(DYNSASH_OBJECTS) $(OBJS)\dynsash_sample_rc.o
 	$(CXX) -o $@ $(DYNSASH_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  -lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos  $(__WXLIB_HTML_p)  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\dynsash_sample_rc.o: ./../../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples
 
 $(OBJS)\dynsash_dynsash.o: ./dynsash.cpp
 	$(CXX) -c -o $@ $(DYNSASH_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/samples/gizmos/dynsash/makefile.vc b/contrib/samples/gizmos/dynsash/makefile.vc
index 3923ca0802..96673f5d70 100644
--- a/contrib/samples/gizmos/dynsash/makefile.vc
+++ b/contrib/samples/gizmos/dynsash/makefile.vc
@@ -22,10 +22,10 @@ DYNSASH_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\dynsash.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\..\samples \
-	/DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\..\samples /DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 DYNSASH_OBJECTS =  \
 	$(OBJS)\dynsash_sample.res \
 	$(OBJS)\dynsash_dynsash.obj
@@ -209,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -267,7 +273,7 @@ $(OBJS)\dynsash.exe: $(DYNSASH_OBJECTS) $(OBJS)\dynsash_sample.res
 <<
 
 $(OBJS)\dynsash_sample.res: .\..\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples $**
 
 $(OBJS)\dynsash_dynsash.obj: .\dynsash.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DYNSASH_CXXFLAGS) $**
diff --git a/contrib/samples/gizmos/dynsash/makefile.wat b/contrib/samples/gizmos/dynsash/makefile.wat
index 483dfb65f8..44df39284a 100644
--- a/contrib/samples/gizmos/dynsash/makefile.wat
+++ b/contrib/samples/gizmos/dynsash/makefile.wat
@@ -251,7 +251,7 @@ $(OBJS)\dynsash.exe :  $(DYNSASH_OBJECTS) $(OBJS)\dynsash_sample.res
 	wlink @$(OBJS)\dynsash.lbc
 
 $(OBJS)\dynsash_sample.res :  .AUTODEPEND .\..\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples $<
 
 $(OBJS)\dynsash_dynsash.obj :  .AUTODEPEND .\dynsash.cpp
 	$(CXX) -zq -fo=$^@ $(DYNSASH_CXXFLAGS) $<
diff --git a/contrib/samples/gizmos/dynsash_switch/Makefile.in b/contrib/samples/gizmos/dynsash_switch/Makefile.in
index b213988245..4e0a647a94 100644
--- a/contrib/samples/gizmos/dynsash_switch/Makefile.in
+++ b/contrib/samples/gizmos/dynsash_switch/Makefile.in
@@ -178,7 +178,7 @@ dynsash_switch.app/Contents/PkgInfo: dynsash_switch$(EXEEXT) $(top_srcdir)/src/m
 @COND_PLATFORM_MACOSX_1@dynsash_switch_bundle: $(____dynsash_switch_BUNDLE_TGT_REF_DEP)
 
 dynsash_switch_sample_rc.o: $(srcdir)/../../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include
 
 dynsash_switch_dynsash_switch.o: $(srcdir)/dynsash_switch.cpp
 	$(CXXC) -c -o $@ $(DYNSASH_SWITCH_CXXFLAGS) $(srcdir)/dynsash_switch.cpp
diff --git a/contrib/samples/gizmos/dynsash_switch/makefile.bcc b/contrib/samples/gizmos/dynsash_switch/makefile.bcc
index b935c771fe..7257c4b15a 100644
--- a/contrib/samples/gizmos/dynsash_switch/makefile.bcc
+++ b/contrib/samples/gizmos/dynsash_switch/makefile.bcc
@@ -31,7 +31,7 @@ DYNSASH_SWITCH_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include \
 	$(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I.\..\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
+	$(__MSLU_DEFINE_p) -I.\..\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
 	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 DYNSASH_SWITCH_OBJECTS =  \
 	$(OBJS)\dynsash_switch_dynsash_switch.obj
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -212,7 +218,7 @@ $(OBJS)\dynsash_switch.exe: $(DYNSASH_SWITCH_OBJECTS)  $(OBJS)\dynsash_switch_sa
 |
 
 $(OBJS)\dynsash_switch_sample.res: .\..\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples $**
 
 $(OBJS)\dynsash_switch_dynsash_switch.obj: .\dynsash_switch.cpp
 	$(CXX) -q -c -P -o$@ $(DYNSASH_SWITCH_CXXFLAGS) $**
diff --git a/contrib/samples/gizmos/dynsash_switch/makefile.gcc b/contrib/samples/gizmos/dynsash_switch/makefile.gcc
index ed79c788b2..eb2229361a 100644
--- a/contrib/samples/gizmos/dynsash_switch/makefile.gcc
+++ b/contrib/samples/gizmos/dynsash_switch/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 DYNSASH_SWITCH_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 DYNSASH_SWITCH_OBJECTS =  \
 	$(OBJS)\dynsash_switch_sample_rc.o \
 	$(OBJS)\dynsash_switch_dynsash_switch.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -205,7 +211,7 @@ $(OBJS)\dynsash_switch.exe: $(DYNSASH_SWITCH_OBJECTS) $(OBJS)\dynsash_switch_sam
 	$(CXX) -o $@ $(DYNSASH_SWITCH_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  -lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\dynsash_switch_sample_rc.o: ./../../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples
 
 $(OBJS)\dynsash_switch_dynsash_switch.o: ./dynsash_switch.cpp
 	$(CXX) -c -o $@ $(DYNSASH_SWITCH_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/samples/gizmos/dynsash_switch/makefile.vc b/contrib/samples/gizmos/dynsash_switch/makefile.vc
index 00d72c1ccb..b9f20340bc 100644
--- a/contrib/samples/gizmos/dynsash_switch/makefile.vc
+++ b/contrib/samples/gizmos/dynsash_switch/makefile.vc
@@ -22,10 +22,10 @@ DYNSASH_SWITCH_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\dynsash_switch.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\..\samples \
-	/DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\..\samples /DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 DYNSASH_SWITCH_OBJECTS =  \
 	$(OBJS)\dynsash_switch_sample.res \
 	$(OBJS)\dynsash_switch_dynsash_switch.obj
@@ -209,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -263,7 +269,7 @@ $(OBJS)\dynsash_switch.exe: $(DYNSASH_SWITCH_OBJECTS) $(OBJS)\dynsash_switch_sam
 <<
 
 $(OBJS)\dynsash_switch_sample.res: .\..\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples $**
 
 $(OBJS)\dynsash_switch_dynsash_switch.obj: .\dynsash_switch.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DYNSASH_SWITCH_CXXFLAGS) $**
diff --git a/contrib/samples/gizmos/dynsash_switch/makefile.wat b/contrib/samples/gizmos/dynsash_switch/makefile.wat
index d21a455b69..09a08f2985 100644
--- a/contrib/samples/gizmos/dynsash_switch/makefile.wat
+++ b/contrib/samples/gizmos/dynsash_switch/makefile.wat
@@ -246,7 +246,7 @@ $(OBJS)\dynsash_switch.exe :  $(DYNSASH_SWITCH_OBJECTS) $(OBJS)\dynsash_switch_s
 	wlink @$(OBJS)\dynsash_switch.lbc
 
 $(OBJS)\dynsash_switch_sample.res :  .AUTODEPEND .\..\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples $<
 
 $(OBJS)\dynsash_switch_dynsash_switch.obj :  .AUTODEPEND .\dynsash_switch.cpp
 	$(CXX) -zq -fo=$^@ $(DYNSASH_SWITCH_CXXFLAGS) $<
diff --git a/contrib/samples/gizmos/editlbox/Makefile.in b/contrib/samples/gizmos/editlbox/Makefile.in
index a1e4759204..8f663f335b 100644
--- a/contrib/samples/gizmos/editlbox/Makefile.in
+++ b/contrib/samples/gizmos/editlbox/Makefile.in
@@ -172,7 +172,7 @@ test.app/Contents/PkgInfo: test$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info.plist
 @COND_PLATFORM_MACOSX_1@test_bundle: $(____test_BUNDLE_TGT_REF_DEP)
 
 test_sample_rc.o: $(srcdir)/../../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include
 
 test_test.o: $(srcdir)/test.cpp
 	$(CXXC) -c -o $@ $(TEST_CXXFLAGS) $(srcdir)/test.cpp
diff --git a/contrib/samples/gizmos/editlbox/makefile.bcc b/contrib/samples/gizmos/editlbox/makefile.bcc
index 2fe61a9139..2d6e805b23 100644
--- a/contrib/samples/gizmos/editlbox/makefile.bcc
+++ b/contrib/samples/gizmos/editlbox/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 TEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 TEST_OBJECTS =  \
 	$(OBJS)\test_test.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -212,7 +218,7 @@ $(OBJS)\test.exe: $(TEST_OBJECTS)  $(OBJS)\test_sample.res
 |
 
 $(OBJS)\test_sample.res: .\..\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples $**
 
 $(OBJS)\test_test.obj: .\test.cpp
 	$(CXX) -q -c -P -o$@ $(TEST_CXXFLAGS) $**
diff --git a/contrib/samples/gizmos/editlbox/makefile.gcc b/contrib/samples/gizmos/editlbox/makefile.gcc
index 83ec2351e5..56796ffb51 100644
--- a/contrib/samples/gizmos/editlbox/makefile.gcc
+++ b/contrib/samples/gizmos/editlbox/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 TEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
+	-I.\..\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TEST_OBJECTS =  \
 	$(OBJS)\test_sample_rc.o \
 	$(OBJS)\test_test.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -205,7 +211,7 @@ $(OBJS)\test.exe: $(TEST_OBJECTS) $(OBJS)\test_sample_rc.o
 	$(CXX) -o $@ $(TEST_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  -lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\test_sample_rc.o: ./../../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples
 
 $(OBJS)\test_test.o: ./test.cpp
 	$(CXX) -c -o $@ $(TEST_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/samples/gizmos/editlbox/makefile.vc b/contrib/samples/gizmos/editlbox/makefile.vc
index b213480024..3348efa89b 100644
--- a/contrib/samples/gizmos/editlbox/makefile.vc
+++ b/contrib/samples/gizmos/editlbox/makefile.vc
@@ -22,10 +22,10 @@ TEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\test.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\..\samples \
-	/DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\..\samples /DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 TEST_OBJECTS =  \
 	$(OBJS)\test_sample.res \
 	$(OBJS)\test_test.obj
@@ -209,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -263,7 +269,7 @@ $(OBJS)\test.exe: $(TEST_OBJECTS) $(OBJS)\test_sample.res
 <<
 
 $(OBJS)\test_sample.res: .\..\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples $**
 
 $(OBJS)\test_test.obj: .\test.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(TEST_CXXFLAGS) $**
diff --git a/contrib/samples/gizmos/editlbox/makefile.wat b/contrib/samples/gizmos/editlbox/makefile.wat
index db586faba0..2fc7366ec4 100644
--- a/contrib/samples/gizmos/editlbox/makefile.wat
+++ b/contrib/samples/gizmos/editlbox/makefile.wat
@@ -246,7 +246,7 @@ $(OBJS)\test.exe :  $(TEST_OBJECTS) $(OBJS)\test_sample.res
 	wlink @$(OBJS)\test.lbc
 
 $(OBJS)\test_sample.res :  .AUTODEPEND .\..\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples $<
 
 $(OBJS)\test_test.obj :  .AUTODEPEND .\test.cpp
 	$(CXX) -zq -fo=$^@ $(TEST_CXXFLAGS) $<
diff --git a/contrib/samples/gizmos/led/Makefile.in b/contrib/samples/gizmos/led/Makefile.in
index d17765ef40..64cbefe8fc 100644
--- a/contrib/samples/gizmos/led/Makefile.in
+++ b/contrib/samples/gizmos/led/Makefile.in
@@ -171,7 +171,7 @@ led.app/Contents/PkgInfo: led$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info.plist.i
 @COND_PLATFORM_MACOSX_1@led_bundle: $(____led_BUNDLE_TGT_REF_DEP)
 
 led_sample_rc.o: $(srcdir)/../../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include
 
 led_led.o: $(srcdir)/led.cpp
 	$(CXXC) -c -o $@ $(LED_CXXFLAGS) $(srcdir)/led.cpp
diff --git a/contrib/samples/gizmos/led/makefile.bcc b/contrib/samples/gizmos/led/makefile.bcc
index 3a62a24022..464467d4b3 100644
--- a/contrib/samples/gizmos/led/makefile.bcc
+++ b/contrib/samples/gizmos/led/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 LED_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 LED_OBJECTS =  \
 	$(OBJS)\led_led.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -212,7 +218,7 @@ $(OBJS)\led.exe: $(LED_OBJECTS)  $(OBJS)\led_sample.res
 |
 
 $(OBJS)\led_sample.res: .\..\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples $**
 
 $(OBJS)\led_led.obj: .\led.cpp
 	$(CXX) -q -c -P -o$@ $(LED_CXXFLAGS) $**
diff --git a/contrib/samples/gizmos/led/makefile.gcc b/contrib/samples/gizmos/led/makefile.gcc
index e277a2d333..b016c5c33d 100644
--- a/contrib/samples/gizmos/led/makefile.gcc
+++ b/contrib/samples/gizmos/led/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 LED_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
+	-I.\..\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 LED_OBJECTS =  \
 	$(OBJS)\led_sample_rc.o \
 	$(OBJS)\led_led.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -205,7 +211,7 @@ $(OBJS)\led.exe: $(LED_OBJECTS) $(OBJS)\led_sample_rc.o
 	$(CXX) -o $@ $(LED_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  -lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\led_sample_rc.o: ./../../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples
 
 $(OBJS)\led_led.o: ./led.cpp
 	$(CXX) -c -o $@ $(LED_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/samples/gizmos/led/makefile.vc b/contrib/samples/gizmos/led/makefile.vc
index c852bf71db..e8a9f9ad7f 100644
--- a/contrib/samples/gizmos/led/makefile.vc
+++ b/contrib/samples/gizmos/led/makefile.vc
@@ -22,10 +22,10 @@ LED_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\led.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\..\samples \
-	/DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\..\samples /DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 LED_OBJECTS =  \
 	$(OBJS)\led_sample.res \
 	$(OBJS)\led_led.obj
@@ -209,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -263,7 +269,7 @@ $(OBJS)\led.exe: $(LED_OBJECTS) $(OBJS)\led_sample.res
 <<
 
 $(OBJS)\led_sample.res: .\..\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples $**
 
 $(OBJS)\led_led.obj: .\led.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(LED_CXXFLAGS) $**
diff --git a/contrib/samples/gizmos/led/makefile.wat b/contrib/samples/gizmos/led/makefile.wat
index d3f14dd07a..07aadf1801 100644
--- a/contrib/samples/gizmos/led/makefile.wat
+++ b/contrib/samples/gizmos/led/makefile.wat
@@ -246,7 +246,7 @@ $(OBJS)\led.exe :  $(LED_OBJECTS) $(OBJS)\led_sample.res
 	wlink @$(OBJS)\led.lbc
 
 $(OBJS)\led_sample.res :  .AUTODEPEND .\..\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples $<
 
 $(OBJS)\led_led.obj :  .AUTODEPEND .\led.cpp
 	$(CXX) -zq -fo=$^@ $(LED_CXXFLAGS) $<
diff --git a/contrib/samples/gizmos/multicell/Makefile.in b/contrib/samples/gizmos/multicell/Makefile.in
index 62afc5ee5f..b42dfe49d7 100644
--- a/contrib/samples/gizmos/multicell/Makefile.in
+++ b/contrib/samples/gizmos/multicell/Makefile.in
@@ -173,7 +173,7 @@ mtest.app/Contents/PkgInfo: mtest$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info.pli
 @COND_PLATFORM_MACOSX_1@mtest_bundle: $(____mtest_BUNDLE_TGT_REF_DEP)
 
 mtest_sample_rc.o: $(srcdir)/../../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include
 
 mtest_mtest.o: $(srcdir)/mtest.cpp
 	$(CXXC) -c -o $@ $(MTEST_CXXFLAGS) $(srcdir)/mtest.cpp
diff --git a/contrib/samples/gizmos/multicell/makefile.bcc b/contrib/samples/gizmos/multicell/makefile.bcc
index 4329bf716d..d570c36693 100644
--- a/contrib/samples/gizmos/multicell/makefile.bcc
+++ b/contrib/samples/gizmos/multicell/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 MTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 MTEST_OBJECTS =  \
 	$(OBJS)\mtest_mtest.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -212,7 +218,7 @@ $(OBJS)\mtest.exe: $(MTEST_OBJECTS)  $(OBJS)\mtest_sample.res
 |
 
 $(OBJS)\mtest_sample.res: .\..\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples $**
 
 $(OBJS)\mtest_mtest.obj: .\mtest.cpp
 	$(CXX) -q -c -P -o$@ $(MTEST_CXXFLAGS) $**
diff --git a/contrib/samples/gizmos/multicell/makefile.gcc b/contrib/samples/gizmos/multicell/makefile.gcc
index 9871417bc1..595d956715 100644
--- a/contrib/samples/gizmos/multicell/makefile.gcc
+++ b/contrib/samples/gizmos/multicell/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 MTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 MTEST_OBJECTS =  \
 	$(OBJS)\mtest_sample_rc.o \
 	$(OBJS)\mtest_mtest.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -205,7 +211,7 @@ $(OBJS)\mtest.exe: $(MTEST_OBJECTS) $(OBJS)\mtest_sample_rc.o
 	$(CXX) -o $@ $(MTEST_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  -lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\mtest_sample_rc.o: ./../../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples
 
 $(OBJS)\mtest_mtest.o: ./mtest.cpp
 	$(CXX) -c -o $@ $(MTEST_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/samples/gizmos/multicell/makefile.vc b/contrib/samples/gizmos/multicell/makefile.vc
index 6be3ecbfb4..4e7ce42268 100644
--- a/contrib/samples/gizmos/multicell/makefile.vc
+++ b/contrib/samples/gizmos/multicell/makefile.vc
@@ -22,10 +22,10 @@ MTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\mtest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\..\samples \
-	/DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\..\samples /DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 MTEST_OBJECTS =  \
 	$(OBJS)\mtest_sample.res \
 	$(OBJS)\mtest_mtest.obj
@@ -209,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -263,7 +269,7 @@ $(OBJS)\mtest.exe: $(MTEST_OBJECTS) $(OBJS)\mtest_sample.res
 <<
 
 $(OBJS)\mtest_sample.res: .\..\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples $**
 
 $(OBJS)\mtest_mtest.obj: .\mtest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MTEST_CXXFLAGS) $**
diff --git a/contrib/samples/gizmos/multicell/makefile.wat b/contrib/samples/gizmos/multicell/makefile.wat
index 1eae498a25..f992783280 100644
--- a/contrib/samples/gizmos/multicell/makefile.wat
+++ b/contrib/samples/gizmos/multicell/makefile.wat
@@ -246,7 +246,7 @@ $(OBJS)\mtest.exe :  $(MTEST_OBJECTS) $(OBJS)\mtest_sample.res
 	wlink @$(OBJS)\mtest.lbc
 
 $(OBJS)\mtest_sample.res :  .AUTODEPEND .\..\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples $<
 
 $(OBJS)\mtest_mtest.obj :  .AUTODEPEND .\mtest.cpp
 	$(CXX) -zq -fo=$^@ $(MTEST_CXXFLAGS) $<
diff --git a/contrib/samples/gizmos/splittree/Makefile.in b/contrib/samples/gizmos/splittree/Makefile.in
index f886ce6a6d..fa6b4ecf39 100644
--- a/contrib/samples/gizmos/splittree/Makefile.in
+++ b/contrib/samples/gizmos/splittree/Makefile.in
@@ -174,7 +174,7 @@ splittree.app/Contents/PkgInfo: splittree$(EXEEXT) $(top_srcdir)/src/mac/carbon/
 @COND_PLATFORM_MACOSX_1@splittree_bundle: $(____splittree_BUNDLE_TGT_REF_DEP)
 
 splittree_sample_rc.o: $(srcdir)/../../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include
 
 splittree_tree.o: $(srcdir)/tree.cpp
 	$(CXXC) -c -o $@ $(SPLITTREE_CXXFLAGS) $(srcdir)/tree.cpp
diff --git a/contrib/samples/gizmos/splittree/makefile.bcc b/contrib/samples/gizmos/splittree/makefile.bcc
index 7f9815459f..bc4d51a841 100644
--- a/contrib/samples/gizmos/splittree/makefile.bcc
+++ b/contrib/samples/gizmos/splittree/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 SPLITTREE_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 SPLITTREE_OBJECTS =  \
 	$(OBJS)\splittree_tree.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -212,7 +218,7 @@ $(OBJS)\splittree.exe: $(SPLITTREE_OBJECTS)  $(OBJS)\splittree_sample.res
 |
 
 $(OBJS)\splittree_sample.res: .\..\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples $**
 
 $(OBJS)\splittree_tree.obj: .\tree.cpp
 	$(CXX) -q -c -P -o$@ $(SPLITTREE_CXXFLAGS) $**
diff --git a/contrib/samples/gizmos/splittree/makefile.gcc b/contrib/samples/gizmos/splittree/makefile.gcc
index 67d57de38e..de9ebfad80 100644
--- a/contrib/samples/gizmos/splittree/makefile.gcc
+++ b/contrib/samples/gizmos/splittree/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 SPLITTREE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 SPLITTREE_OBJECTS =  \
 	$(OBJS)\splittree_sample_rc.o \
 	$(OBJS)\splittree_tree.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -205,7 +211,7 @@ $(OBJS)\splittree.exe: $(SPLITTREE_OBJECTS) $(OBJS)\splittree_sample_rc.o
 	$(CXX) -o $@ $(SPLITTREE_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  -lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\splittree_sample_rc.o: ./../../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples
 
 $(OBJS)\splittree_tree.o: ./tree.cpp
 	$(CXX) -c -o $@ $(SPLITTREE_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/samples/gizmos/splittree/makefile.vc b/contrib/samples/gizmos/splittree/makefile.vc
index 314b19339b..5b7f39abe2 100644
--- a/contrib/samples/gizmos/splittree/makefile.vc
+++ b/contrib/samples/gizmos/splittree/makefile.vc
@@ -22,10 +22,10 @@ SPLITTREE_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\splittree.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\..\samples \
-	/DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\..\samples /DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 SPLITTREE_OBJECTS =  \
 	$(OBJS)\splittree_sample.res \
 	$(OBJS)\splittree_tree.obj
@@ -209,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -263,7 +269,7 @@ $(OBJS)\splittree.exe: $(SPLITTREE_OBJECTS) $(OBJS)\splittree_sample.res
 <<
 
 $(OBJS)\splittree_sample.res: .\..\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples $**
 
 $(OBJS)\splittree_tree.obj: .\tree.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(SPLITTREE_CXXFLAGS) $**
diff --git a/contrib/samples/gizmos/splittree/makefile.wat b/contrib/samples/gizmos/splittree/makefile.wat
index 630f4eaf61..929ab5c8c9 100644
--- a/contrib/samples/gizmos/splittree/makefile.wat
+++ b/contrib/samples/gizmos/splittree/makefile.wat
@@ -246,7 +246,7 @@ $(OBJS)\splittree.exe :  $(SPLITTREE_OBJECTS) $(OBJS)\splittree_sample.res
 	wlink @$(OBJS)\splittree.lbc
 
 $(OBJS)\splittree_sample.res :  .AUTODEPEND .\..\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples $<
 
 $(OBJS)\splittree_tree.obj :  .AUTODEPEND .\tree.cpp
 	$(CXX) -zq -fo=$^@ $(SPLITTREE_CXXFLAGS) $<
diff --git a/contrib/samples/mmedia/Makefile.in b/contrib/samples/mmedia/Makefile.in
index c69575913a..79fd249bd0 100644
--- a/contrib/samples/mmedia/Makefile.in
+++ b/contrib/samples/mmedia/Makefile.in
@@ -182,7 +182,7 @@ mmboard_mmbman.o: $(srcdir)/mmbman.cpp
 	$(CXXC) -c -o $@ $(MMBOARD_CXXFLAGS) $(srcdir)/mmbman.cpp
 
 mmboard_mmboard_rc.o: $(srcdir)/mmboard.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include
 
 
 # Include dependency info, if present:
diff --git a/contrib/samples/mmedia/makefile.bcc b/contrib/samples/mmedia/makefile.bcc
index 748d6f8ac0..e3106cc043 100644
--- a/contrib/samples/mmedia/makefile.bcc
+++ b/contrib/samples/mmedia/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 MMBOARD_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH -I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 MMBOARD_OBJECTS =  \
 	$(OBJS)\mmboard_mmboard.obj \
 	$(OBJS)\mmboard_mmbman.obj
@@ -144,6 +144,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -219,5 +225,5 @@ $(OBJS)\mmboard_mmbman.obj: .\mmbman.cpp
 	$(CXX) -q -c -P -o$@ $(MMBOARD_CXXFLAGS) $**
 
 $(OBJS)\mmboard_mmboard.res: .\mmboard.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH -i.\..\..\include $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH -i.\..\..\include $**
 
diff --git a/contrib/samples/mmedia/makefile.gcc b/contrib/samples/mmedia/makefile.gcc
index 1e2aacc704..2a5ca2586f 100644
--- a/contrib/samples/mmedia/makefile.gcc
+++ b/contrib/samples/mmedia/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 MMBOARD_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH -I.\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 MMBOARD_OBJECTS =  \
 	$(OBJS)\mmboard_mmboard.o \
 	$(OBJS)\mmboard_mmbman.o \
@@ -135,6 +135,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -212,7 +218,7 @@ $(OBJS)\mmboard_mmbman.o: ./mmbman.cpp
 	$(CXX) -c -o $@ $(MMBOARD_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\mmboard_mmboard_rc.o: ./mmboard.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include
 
 .PHONY: all clean
 
diff --git a/contrib/samples/mmedia/makefile.vc b/contrib/samples/mmedia/makefile.vc
index 4626210b51..f0f06282c1 100644
--- a/contrib/samples/mmedia/makefile.vc
+++ b/contrib/samples/mmedia/makefile.vc
@@ -22,10 +22,10 @@ MMBOARD_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\mmboard.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	/I.\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH /I.\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 MMBOARD_OBJECTS =  \
 	$(OBJS)\mmboard_mmboard.obj \
 	$(OBJS)\mmboard_mmbman.obj \
@@ -210,6 +210,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -270,5 +276,5 @@ $(OBJS)\mmboard_mmbman.obj: .\mmbman.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MMBOARD_CXXFLAGS) $**
 
 $(OBJS)\mmboard_mmboard.res: .\mmboard.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include $**
 
diff --git a/contrib/samples/mmedia/makefile.wat b/contrib/samples/mmedia/makefile.wat
index 3ec3ead9ab..343b9733e4 100644
--- a/contrib/samples/mmedia/makefile.wat
+++ b/contrib/samples/mmedia/makefile.wat
@@ -253,5 +253,5 @@ $(OBJS)\mmboard_mmbman.obj :  .AUTODEPEND .\mmbman.cpp
 	$(CXX) -zq -fo=$^@ $(MMBOARD_CXXFLAGS) $<
 
 $(OBJS)\mmboard_mmboard.res :  .AUTODEPEND .\mmboard.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include $<
 
diff --git a/contrib/samples/ogl/ogledit/Makefile.in b/contrib/samples/ogl/ogledit/Makefile.in
index 1d66f12cc7..1751d5cb6f 100644
--- a/contrib/samples/ogl/ogledit/Makefile.in
+++ b/contrib/samples/ogl/ogledit/Makefile.in
@@ -189,7 +189,7 @@ ogledit_palette.o: $(srcdir)/palette.cpp
 	$(CXXC) -c -o $@ $(OGLEDIT_CXXFLAGS) $(srcdir)/palette.cpp
 
 ogledit_ogledit_rc.o: $(srcdir)/ogledit.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../../include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../../include
 
 
 # Include dependency info, if present:
diff --git a/contrib/samples/ogl/ogledit/makefile.bcc b/contrib/samples/ogl/ogledit/makefile.bcc
index 168eb12852..5d7ec8040b 100644
--- a/contrib/samples/ogl/ogledit/makefile.bcc
+++ b/contrib/samples/ogl/ogledit/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 OGLEDIT_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 OGLEDIT_OBJECTS =  \
 	$(OBJS)\ogledit_ogledit.obj \
 	$(OBJS)\ogledit_doc.obj \
@@ -146,6 +146,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -227,5 +233,5 @@ $(OBJS)\ogledit_palette.obj: .\palette.cpp
 	$(CXX) -q -c -P -o$@ $(OGLEDIT_CXXFLAGS) $**
 
 $(OBJS)\ogledit_ogledit.res: .\ogledit.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples -dNOPCH -i.\..\..\..\include $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples -dNOPCH -i.\..\..\..\include $**
 
diff --git a/contrib/samples/ogl/ogledit/makefile.gcc b/contrib/samples/ogl/ogledit/makefile.gcc
index 9096c9c244..38cdb4b114 100644
--- a/contrib/samples/ogl/ogledit/makefile.gcc
+++ b/contrib/samples/ogl/ogledit/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 OGLEDIT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 OGLEDIT_OBJECTS =  \
 	$(OBJS)\ogledit_ogledit.o \
 	$(OBJS)\ogledit_doc.o \
@@ -137,6 +137,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -220,7 +226,7 @@ $(OBJS)\ogledit_palette.o: ./palette.cpp
 	$(CXX) -c -o $@ $(OGLEDIT_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\ogledit_ogledit_rc.o: ./ogledit.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples --define NOPCH --include-dir ./../../../include
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples --define NOPCH --include-dir ./../../../include
 
 .PHONY: all clean
 
diff --git a/contrib/samples/ogl/ogledit/makefile.vc b/contrib/samples/ogl/ogledit/makefile.vc
index 672d67864d..61cb7f3086 100644
--- a/contrib/samples/ogl/ogledit/makefile.vc
+++ b/contrib/samples/ogl/ogledit/makefile.vc
@@ -22,10 +22,10 @@ OGLEDIT_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\ogledit.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\..\samples \
-	/DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\..\samples /DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 OGLEDIT_OBJECTS =  \
 	$(OBJS)\ogledit_ogledit.obj \
 	$(OBJS)\ogledit_doc.obj \
@@ -212,6 +212,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -278,5 +284,5 @@ $(OBJS)\ogledit_palette.obj: .\palette.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(OGLEDIT_CXXFLAGS) $**
 
 $(OBJS)\ogledit_ogledit.res: .\ogledit.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples /d NOPCH /i .\..\..\..\include $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples /d NOPCH /i .\..\..\..\include $**
 
diff --git a/contrib/samples/ogl/ogledit/makefile.wat b/contrib/samples/ogl/ogledit/makefile.wat
index 8b55eee644..e4dc464a9e 100644
--- a/contrib/samples/ogl/ogledit/makefile.wat
+++ b/contrib/samples/ogl/ogledit/makefile.wat
@@ -261,5 +261,5 @@ $(OBJS)\ogledit_palette.obj :  .AUTODEPEND .\palette.cpp
 	$(CXX) -zq -fo=$^@ $(OGLEDIT_CXXFLAGS) $<
 
 $(OBJS)\ogledit_ogledit.res :  .AUTODEPEND .\ogledit.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples -dNOPCH -i=.\..\..\..\include $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples -dNOPCH -i=.\..\..\..\include $<
 
diff --git a/contrib/samples/ogl/studio/Makefile.in b/contrib/samples/ogl/studio/Makefile.in
index 52440270f6..1dcd72968f 100644
--- a/contrib/samples/ogl/studio/Makefile.in
+++ b/contrib/samples/ogl/studio/Makefile.in
@@ -234,7 +234,7 @@ studio_csprint.o: $(srcdir)/csprint.cpp
 	$(CXXC) -c -o $@ $(STUDIO_CXXFLAGS) $(srcdir)/csprint.cpp
 
 studio_studio_rc.o: $(srcdir)/studio.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../../include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../../include
 
 
 # Include dependency info, if present:
diff --git a/contrib/samples/ogl/studio/makefile.bcc b/contrib/samples/ogl/studio/makefile.bcc
index 70b36a7c7e..9aff2de029 100644
--- a/contrib/samples/ogl/studio/makefile.bcc
+++ b/contrib/samples/ogl/studio/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 STUDIO_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 STUDIO_OBJECTS =  \
 	$(OBJS)\studio_studio.obj \
 	$(OBJS)\studio_doc.obj \
@@ -152,6 +152,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -263,5 +269,5 @@ $(OBJS)\studio_csprint.obj: .\csprint.cpp
 	$(CXX) -q -c -P -o$@ $(STUDIO_CXXFLAGS) $**
 
 $(OBJS)\studio_studio.res: .\studio.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples -dNOPCH -i.\..\..\..\include $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\..\samples -dNOPCH -i.\..\..\..\include $**
 
diff --git a/contrib/samples/ogl/studio/makefile.gcc b/contrib/samples/ogl/studio/makefile.gcc
index b9584bac3f..a6f6daf49a 100644
--- a/contrib/samples/ogl/studio/makefile.gcc
+++ b/contrib/samples/ogl/studio/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 STUDIO_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\..\samples -DNOPCH \
-	-I.\..\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\..\samples -DNOPCH -I.\..\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 STUDIO_OBJECTS =  \
 	$(OBJS)\studio_studio.o \
 	$(OBJS)\studio_doc.o \
@@ -143,6 +143,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -256,7 +262,7 @@ $(OBJS)\studio_csprint.o: ./csprint.cpp
 	$(CXX) -c -o $@ $(STUDIO_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\studio_studio_rc.o: ./studio.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples --define NOPCH --include-dir ./../../../include
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../../samples --define NOPCH --include-dir ./../../../include
 
 .PHONY: all clean data
 
diff --git a/contrib/samples/ogl/studio/makefile.vc b/contrib/samples/ogl/studio/makefile.vc
index 2cd5c0748d..663be470d4 100644
--- a/contrib/samples/ogl/studio/makefile.vc
+++ b/contrib/samples/ogl/studio/makefile.vc
@@ -22,10 +22,10 @@ STUDIO_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\studio.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\..\samples \
-	/DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\..\samples /DNOPCH /I.\..\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 STUDIO_OBJECTS =  \
 	$(OBJS)\studio_studio.obj \
 	$(OBJS)\studio_doc.obj \
@@ -218,6 +218,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -314,5 +320,5 @@ $(OBJS)\studio_csprint.obj: .\csprint.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(STUDIO_CXXFLAGS) $**
 
 $(OBJS)\studio_studio.res: .\studio.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples /d NOPCH /i .\..\..\..\include $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\..\samples /d NOPCH /i .\..\..\..\include $**
 
diff --git a/contrib/samples/ogl/studio/makefile.wat b/contrib/samples/ogl/studio/makefile.wat
index 8f48085d25..2c07331369 100644
--- a/contrib/samples/ogl/studio/makefile.wat
+++ b/contrib/samples/ogl/studio/makefile.wat
@@ -299,5 +299,5 @@ $(OBJS)\studio_csprint.obj :  .AUTODEPEND .\csprint.cpp
 	$(CXX) -zq -fo=$^@ $(STUDIO_CXXFLAGS) $<
 
 $(OBJS)\studio_studio.res :  .AUTODEPEND .\studio.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples -dNOPCH -i=.\..\..\..\include $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\..\samples -dNOPCH -i=.\..\..\..\include $<
 
diff --git a/contrib/samples/plot/Makefile.in b/contrib/samples/plot/Makefile.in
index 94c70c2a0d..19569aee22 100644
--- a/contrib/samples/plot/Makefile.in
+++ b/contrib/samples/plot/Makefile.in
@@ -175,7 +175,7 @@ plot_plot.o: $(srcdir)/plot.cpp
 	$(CXXC) -c -o $@ $(PLOT_CXXFLAGS) $(srcdir)/plot.cpp
 
 plot_plot_rc.o: $(srcdir)/plot.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include
 
 
 # Include dependency info, if present:
diff --git a/contrib/samples/plot/makefile.bcc b/contrib/samples/plot/makefile.bcc
index 77538011d4..466e3ac752 100644
--- a/contrib/samples/plot/makefile.bcc
+++ b/contrib/samples/plot/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 PLOT_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH -I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 PLOT_OBJECTS =  \
 	$(OBJS)\plot_plot.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -215,5 +221,5 @@ $(OBJS)\plot_plot.obj: .\plot.cpp
 	$(CXX) -q -c -P -o$@ $(PLOT_CXXFLAGS) $**
 
 $(OBJS)\plot_plot.res: .\plot.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH -i.\..\..\include $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH -i.\..\..\include $**
 
diff --git a/contrib/samples/plot/makefile.gcc b/contrib/samples/plot/makefile.gcc
index e70f1748fb..d1c9a68dbe 100644
--- a/contrib/samples/plot/makefile.gcc
+++ b/contrib/samples/plot/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 PLOT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH -I.\..\..\include \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
+	-I.\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 PLOT_OBJECTS =  \
 	$(OBJS)\plot_plot.o \
 	$(OBJS)\plot_plot_rc.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -208,7 +214,7 @@ $(OBJS)\plot_plot.o: ./plot.cpp
 	$(CXX) -c -o $@ $(PLOT_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\plot_plot_rc.o: ./plot.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include
 
 .PHONY: all clean
 
diff --git a/contrib/samples/plot/makefile.vc b/contrib/samples/plot/makefile.vc
index a6625dd04f..a4d4c3cfe6 100644
--- a/contrib/samples/plot/makefile.vc
+++ b/contrib/samples/plot/makefile.vc
@@ -22,10 +22,10 @@ PLOT_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\plot.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	/I.\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH /I.\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 PLOT_OBJECTS =  \
 	$(OBJS)\plot_plot.obj \
 	$(OBJS)\plot_plot.res
@@ -209,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -266,5 +272,5 @@ $(OBJS)\plot_plot.obj: .\plot.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(PLOT_CXXFLAGS) $**
 
 $(OBJS)\plot_plot.res: .\plot.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include $**
 
diff --git a/contrib/samples/plot/makefile.wat b/contrib/samples/plot/makefile.wat
index 486f2df7a0..367a5079d7 100644
--- a/contrib/samples/plot/makefile.wat
+++ b/contrib/samples/plot/makefile.wat
@@ -249,5 +249,5 @@ $(OBJS)\plot_plot.obj :  .AUTODEPEND .\plot.cpp
 	$(CXX) -zq -fo=$^@ $(PLOT_CXXFLAGS) $<
 
 $(OBJS)\plot_plot.res :  .AUTODEPEND .\plot.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include $<
 
diff --git a/contrib/samples/stc/Makefile.in b/contrib/samples/stc/Makefile.in
index dee769ee1d..9f77423e7e 100644
--- a/contrib/samples/stc/Makefile.in
+++ b/contrib/samples/stc/Makefile.in
@@ -188,7 +188,7 @@ data:
 	done
 
 stctest_sample_rc.o: $(srcdir)/../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 stctest_stctest.o: $(srcdir)/stctest.cpp
 	$(CXXC) -c -o $@ $(STCTEST_CXXFLAGS) $(srcdir)/stctest.cpp
diff --git a/contrib/samples/stc/makefile.bcc b/contrib/samples/stc/makefile.bcc
index 34ffad81f9..2fd92d0d0f 100644
--- a/contrib/samples/stc/makefile.bcc
+++ b/contrib/samples/stc/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 STCTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH -I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 STCTEST_OBJECTS =  \
 	$(OBJS)\stctest_stctest.obj \
 	$(OBJS)\stctest_edit.obj \
@@ -145,6 +145,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,7 +224,7 @@ data:
 	for %f in (stctest.cpp) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\stctest_sample.res: .\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
 
 $(OBJS)\stctest_stctest.obj: .\stctest.cpp
 	$(CXX) -q -c -P -o$@ $(STCTEST_CXXFLAGS) $**
diff --git a/contrib/samples/stc/makefile.gcc b/contrib/samples/stc/makefile.gcc
index e1adc291f0..d441c630a5 100644
--- a/contrib/samples/stc/makefile.gcc
+++ b/contrib/samples/stc/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 STCTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH -I.\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 STCTEST_OBJECTS =  \
 	$(OBJS)\stctest_sample_rc.o \
 	$(OBJS)\stctest_stctest.o \
@@ -136,6 +136,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +217,7 @@ data:
 	for %%f in (stctest.cpp) do if not exist $(OBJS)\%%f copy .\%%f $(OBJS)
 
 $(OBJS)\stctest_sample_rc.o: ./../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
 
 $(OBJS)\stctest_stctest.o: ./stctest.cpp
 	$(CXX) -c -o $@ $(STCTEST_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/samples/stc/makefile.vc b/contrib/samples/stc/makefile.vc
index afc5261420..59a42c6162 100644
--- a/contrib/samples/stc/makefile.vc
+++ b/contrib/samples/stc/makefile.vc
@@ -22,10 +22,10 @@ STCTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\stctest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	/I.\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH /I.\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 STCTEST_OBJECTS =  \
 	$(OBJS)\stctest_sample.res \
 	$(OBJS)\stctest_stctest.obj \
@@ -211,6 +211,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,7 +275,7 @@ data:
 	for %f in (stctest.cpp) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\stctest_sample.res: .\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
 
 $(OBJS)\stctest_stctest.obj: .\stctest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(STCTEST_CXXFLAGS) $**
diff --git a/contrib/samples/stc/makefile.wat b/contrib/samples/stc/makefile.wat
index 679b42059e..5f7f5757f3 100644
--- a/contrib/samples/stc/makefile.wat
+++ b/contrib/samples/stc/makefile.wat
@@ -252,7 +252,7 @@ data : .SYMBOLIC
 	for %f in (stctest.cpp) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\stctest_sample.res :  .AUTODEPEND .\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
 
 $(OBJS)\stctest_stctest.obj :  .AUTODEPEND .\stctest.cpp
 	$(CXX) -zq -fo=$^@ $(STCTEST_CXXFLAGS) $<
diff --git a/contrib/samples/svg/Makefile.in b/contrib/samples/svg/Makefile.in
index 7e6bc05739..7fcc8ae138 100644
--- a/contrib/samples/svg/Makefile.in
+++ b/contrib/samples/svg/Makefile.in
@@ -174,7 +174,7 @@ svgtest.app/Contents/PkgInfo: svgtest$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info
 @COND_PLATFORM_MACOSX_1@svgtest_bundle: $(____svgtest_BUNDLE_TGT_REF_DEP)
 
 svgtest_sample_rc.o: $(srcdir)/../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 svgtest_svgtest.o: $(srcdir)/svgtest.cpp
 	$(CXXC) -c -o $@ $(SVGTEST_CXXFLAGS) $(srcdir)/svgtest.cpp
diff --git a/contrib/samples/svg/makefile.bcc b/contrib/samples/svg/makefile.bcc
index b635c34386..bf482a079d 100644
--- a/contrib/samples/svg/makefile.bcc
+++ b/contrib/samples/svg/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 SVGTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH -I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 SVGTEST_OBJECTS =  \
 	$(OBJS)\svgtest_svgtest.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -212,7 +218,7 @@ $(OBJS)\svgtest.exe: $(SVGTEST_OBJECTS)  $(OBJS)\svgtest_sample.res
 |
 
 $(OBJS)\svgtest_sample.res: .\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
 
 $(OBJS)\svgtest_svgtest.obj: .\svgtest.cpp
 	$(CXX) -q -c -P -o$@ $(SVGTEST_CXXFLAGS) $**
diff --git a/contrib/samples/svg/makefile.gcc b/contrib/samples/svg/makefile.gcc
index 727be63692..ee9cd99fc3 100644
--- a/contrib/samples/svg/makefile.gcc
+++ b/contrib/samples/svg/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 SVGTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH -I.\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 SVGTEST_OBJECTS =  \
 	$(OBJS)\svgtest_sample_rc.o \
 	$(OBJS)\svgtest_svgtest.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -205,7 +211,7 @@ $(OBJS)\svgtest.exe: $(SVGTEST_OBJECTS) $(OBJS)\svgtest_sample_rc.o
 	$(CXX) -o $@ $(SVGTEST_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  -lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_svg  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\svgtest_sample_rc.o: ./../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
 
 $(OBJS)\svgtest_svgtest.o: ./svgtest.cpp
 	$(CXX) -c -o $@ $(SVGTEST_CXXFLAGS) $(CPPDEPS) $<
diff --git a/contrib/samples/svg/makefile.vc b/contrib/samples/svg/makefile.vc
index 4bb5f4da34..97f01600b5 100644
--- a/contrib/samples/svg/makefile.vc
+++ b/contrib/samples/svg/makefile.vc
@@ -22,10 +22,10 @@ SVGTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\svgtest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	/I.\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH /I.\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 SVGTEST_OBJECTS =  \
 	$(OBJS)\svgtest_sample.res \
 	$(OBJS)\svgtest_svgtest.obj
@@ -209,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -263,7 +269,7 @@ $(OBJS)\svgtest.exe: $(SVGTEST_OBJECTS) $(OBJS)\svgtest_sample.res
 <<
 
 $(OBJS)\svgtest_sample.res: .\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
 
 $(OBJS)\svgtest_svgtest.obj: .\svgtest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(SVGTEST_CXXFLAGS) $**
diff --git a/contrib/samples/svg/makefile.wat b/contrib/samples/svg/makefile.wat
index ec84062c22..a89d43dcee 100644
--- a/contrib/samples/svg/makefile.wat
+++ b/contrib/samples/svg/makefile.wat
@@ -246,7 +246,7 @@ $(OBJS)\svgtest.exe :  $(SVGTEST_OBJECTS) $(OBJS)\svgtest_sample.res
 	wlink @$(OBJS)\svgtest.lbc
 
 $(OBJS)\svgtest_sample.res :  .AUTODEPEND .\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
 
 $(OBJS)\svgtest_svgtest.obj :  .AUTODEPEND .\svgtest.cpp
 	$(CXX) -zq -fo=$^@ $(SVGTEST_CXXFLAGS) $<
diff --git a/contrib/src/animate/Makefile.in b/contrib/src/animate/Makefile.in
index 19a2d5c5be..c1141e1afa 100644
--- a/contrib/src/animate/Makefile.in
+++ b/contrib/src/animate/Makefile.in
@@ -247,7 +247,7 @@ distclean: clean
 @COND_GCC_PCH_1@	$(top_builddir)./bk-make-pch .pch/wxprec_animatelib/wx/wxprec.h.gch wx/wxprec.h $(CXX) $(ANIMATELIB_CXXFLAGS)
 
 animatedll_version_rc.o: $(srcdir)/../../../src/msw/version.rc $(ANIMATEDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_animate$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_animate$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 animatedll_animate.o: $(srcdir)/animate.cpp $(ANIMATEDLL_ODEP)
 	$(CXXC) -c -o $@ $(ANIMATEDLL_CXXFLAGS) $(srcdir)/animate.cpp
diff --git a/contrib/src/deprecated/Makefile.in b/contrib/src/deprecated/Makefile.in
index d4da601a18..a594c96ec1 100644
--- a/contrib/src/deprecated/Makefile.in
+++ b/contrib/src/deprecated/Makefile.in
@@ -277,7 +277,7 @@ distclean: clean
 @COND_GCC_PCH_1@	$(top_builddir)./bk-make-pch .pch/wxprec_deprecatedlib/wx/wxprec.h.gch wx/wxprec.h $(CXX) $(DEPRECATEDLIB_CXXFLAGS)
 
 deprecateddll_version_rc.o: $(srcdir)/../../../src/msw/version.rc $(DEPRECATEDDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_deprecated$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_deprecated$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 deprecateddll_prop.o: $(srcdir)/prop.cpp $(DEPRECATEDDLL_ODEP)
 	$(CXXC) -c -o $@ $(DEPRECATEDDLL_CXXFLAGS) $(srcdir)/prop.cpp
diff --git a/contrib/src/fl/Makefile.in b/contrib/src/fl/Makefile.in
index 23e23d5943..24b56e6884 100644
--- a/contrib/src/fl/Makefile.in
+++ b/contrib/src/fl/Makefile.in
@@ -278,7 +278,7 @@ distclean: clean
 @COND_GCC_PCH_1@	$(top_builddir)./bk-make-pch .pch/wxprec_fllib/wx/wxprec.h.gch wx/wxprec.h $(CXX) $(FLLIB_CXXFLAGS)
 
 fldll_version_rc.o: $(srcdir)/../../../src/msw/version.rc $(FLDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_fl$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_fl$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 fldll_antiflickpl.o: $(srcdir)/antiflickpl.cpp $(FLDLL_ODEP)
 	$(CXXC) -c -o $@ $(FLDLL_CXXFLAGS) $(srcdir)/antiflickpl.cpp
diff --git a/contrib/src/foldbar/Makefile.in b/contrib/src/foldbar/Makefile.in
index 7b8ea2226e..8fd5b2921f 100644
--- a/contrib/src/foldbar/Makefile.in
+++ b/contrib/src/foldbar/Makefile.in
@@ -251,7 +251,7 @@ distclean: clean
 @COND_GCC_PCH_1@	$(top_builddir)./bk-make-pch .pch/wxprec_foldbarlib/wx/wxprec.h.gch wx/wxprec.h $(CXX) $(FOLDBARLIB_CXXFLAGS)
 
 foldbardll_version_rc.o: $(srcdir)/../../../src/msw/version.rc $(FOLDBARDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_foldbar$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_foldbar$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 foldbardll_captionbar.o: $(srcdir)/captionbar.cpp $(FOLDBARDLL_ODEP)
 	$(CXXC) -c -o $@ $(FOLDBARDLL_CXXFLAGS) $(srcdir)/captionbar.cpp
diff --git a/contrib/src/gizmos/Makefile.in b/contrib/src/gizmos/Makefile.in
index 52d115d9ec..455379380f 100644
--- a/contrib/src/gizmos/Makefile.in
+++ b/contrib/src/gizmos/Makefile.in
@@ -360,7 +360,7 @@ distclean: clean
 @COND_GCC_PCH_1@	$(top_builddir)./bk-make-pch .pch/wxprec_gizmos_xrclib/wx/wxprec.h.gch wx/wxprec.h $(CXX) $(GIZMOS_XRCLIB_CXXFLAGS)
 
 gizmosdll_version_rc.o: $(srcdir)/../../../src/msw/version.rc $(GIZMOSDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_0)  $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_0)  $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 gizmosdll_dynamicsash.o: $(srcdir)/dynamicsash.cpp $(GIZMOSDLL_ODEP)
 	$(CXXC) -c -o $@ $(GIZMOSDLL_CXXFLAGS) $(srcdir)/dynamicsash.cpp
@@ -381,7 +381,7 @@ gizmosdll_statpict.o: $(srcdir)/statpict.cpp $(GIZMOSDLL_ODEP)
 	$(CXXC) -c -o $@ $(GIZMOSDLL_CXXFLAGS) $(srcdir)/statpict.cpp
 
 gizmos_xrcdll_version_rc.o: $(srcdir)/../../../src/msw/version.rc $(GIZMOS_XRCDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_0)  $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_xrc$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_0)  $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_gizmos_xrc$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 gizmos_xrcdll_xh_statpict.o: $(srcdir)/xh_statpict.cpp $(GIZMOS_XRCDLL_ODEP)
 	$(CXXC) -c -o $@ $(GIZMOS_XRCDLL_CXXFLAGS) $(srcdir)/xh_statpict.cpp
diff --git a/contrib/src/mmedia/Makefile.in b/contrib/src/mmedia/Makefile.in
index 83cfe5dbff..e95b328084 100644
--- a/contrib/src/mmedia/Makefile.in
+++ b/contrib/src/mmedia/Makefile.in
@@ -299,7 +299,7 @@ distclean: clean
 @COND_GCC_PCH_1@	$(top_builddir)./bk-make-pch .pch/wxprec_mmedialib/wx/wxprec.h.gch wx/wxprec.h $(CXX) $(MMEDIALIB_CXXFLAGS)
 
 mmediadll_version_rc.o: $(srcdir)/../../../src/msw/version.rc $(MMEDIADLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_mmedia$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_mmedia$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 mmediadll_cdunix.o: $(srcdir)/cdunix.cpp $(MMEDIADLL_ODEP)
 	$(CXXC) -c -o $@ $(MMEDIADLL_CXXFLAGS) $(srcdir)/cdunix.cpp
diff --git a/contrib/src/net/Makefile.in b/contrib/src/net/Makefile.in
index 3d61e4cf1b..8a87ccfe0c 100644
--- a/contrib/src/net/Makefile.in
+++ b/contrib/src/net/Makefile.in
@@ -251,7 +251,7 @@ distclean: clean
 @COND_GCC_PCH_1@	$(top_builddir)./bk-make-pch .pch/wxprec_netutilslib/wx/wxprec.h.gch wx/wxprec.h $(CXX) $(NETUTILSLIB_CXXFLAGS)
 
 netutilsdll_version_rc.o: $(srcdir)/../../../src/msw/version.rc $(NETUTILSDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_netutils$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_netutils$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 netutilsdll_email.o: $(srcdir)/email.cpp $(NETUTILSDLL_ODEP)
 	$(CXXC) -c -o $@ $(NETUTILSDLL_CXXFLAGS) $(srcdir)/email.cpp
diff --git a/contrib/src/ogl/Makefile.in b/contrib/src/ogl/Makefile.in
index fc38bcf63d..97296d404b 100644
--- a/contrib/src/ogl/Makefile.in
+++ b/contrib/src/ogl/Makefile.in
@@ -268,7 +268,7 @@ distclean: clean
 @COND_GCC_PCH_1@	$(top_builddir)./bk-make-pch .pch/wxprec_ogllib/wx/wxprec.h.gch wx/wxprec.h $(CXX) $(OGLLIB_CXXFLAGS)
 
 ogldll_version_rc.o: $(srcdir)/../../../src/msw/version.rc $(OGLDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_ogl$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_ogl$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 ogldll_basic2.o: $(srcdir)/basic2.cpp $(OGLDLL_ODEP)
 	$(CXXC) -c -o $@ $(OGLDLL_CXXFLAGS) $(srcdir)/basic2.cpp
diff --git a/contrib/src/plot/Makefile.in b/contrib/src/plot/Makefile.in
index b93717aee1..a39c2aaed8 100644
--- a/contrib/src/plot/Makefile.in
+++ b/contrib/src/plot/Makefile.in
@@ -246,7 +246,7 @@ distclean: clean
 @COND_GCC_PCH_1@	$(top_builddir)./bk-make-pch .pch/wxprec_plotlib/wx/wxprec.h.gch wx/wxprec.h $(CXX) $(PLOTLIB_CXXFLAGS)
 
 plotdll_version_rc.o: $(srcdir)/../../../src/msw/version.rc $(PLOTDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_plot$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_plot$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 plotdll_plot.o: $(srcdir)/plot.cpp $(PLOTDLL_ODEP)
 	$(CXXC) -c -o $@ $(PLOTDLL_CXXFLAGS) $(srcdir)/plot.cpp
diff --git a/contrib/src/stc/Makefile.in b/contrib/src/stc/Makefile.in
index 8d40cbee40..4a08ba7126 100644
--- a/contrib/src/stc/Makefile.in
+++ b/contrib/src/stc/Makefile.in
@@ -375,7 +375,7 @@ distclean: clean
 @COND_SHARED_0@	$(INSTALL_DATA) $(LIBDIRNAME)/$(LIBPREFIX)wx_$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_stc-$(WX_RELEASE)$(HOST_SUFFIX)$(LIBEXT) $(DESTDIR)$(libdir)
 
 stcdll_version_rc.o: $(srcdir)/../../../src/msw/version.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_stc$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_stc$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 stcdll_PlatWX.o: $(srcdir)/PlatWX.cpp
 	$(CXXC) -c -o $@ $(STCDLL_CXXFLAGS) $(srcdir)/PlatWX.cpp
diff --git a/contrib/src/svg/Makefile.in b/contrib/src/svg/Makefile.in
index 3f73564c14..ec7c62a5a8 100644
--- a/contrib/src/svg/Makefile.in
+++ b/contrib/src/svg/Makefile.in
@@ -246,7 +246,7 @@ distclean: clean
 @COND_GCC_PCH_1@	$(top_builddir)./bk-make-pch .pch/wxprec_svglib/wx/wxprec.h.gch wx/wxprec.h $(CXX) $(SVGLIB_CXXFLAGS)
 
 svgdll_version_rc.o: $(srcdir)/../../../src/msw/version.rc $(SVGDLL_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_svg$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_svg$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 svgdll_dcsvg.o: $(srcdir)/dcsvg.cpp $(SVGDLL_ODEP)
 	$(CXXC) -c -o $@ $(SVGDLL_CXXFLAGS) $(srcdir)/dcsvg.cpp
diff --git a/contrib/utils/convertrc/Makefile.in b/contrib/utils/convertrc/Makefile.in
index 2c994effef..d3745418b5 100644
--- a/contrib/utils/convertrc/Makefile.in
+++ b/contrib/utils/convertrc/Makefile.in
@@ -170,7 +170,7 @@ convertrc_wxr2xml.o: $(srcdir)/wxr2xml.cpp
 	$(CXXC) -c -o $@ $(CONVERTRC_CXXFLAGS) $(srcdir)/wxr2xml.cpp
 
 convertrc_wxconvert_rc.o: $(srcdir)/wxconvert.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include --include-dir $(srcdir)/../../include
 
 
 # Include dependency info, if present:
diff --git a/contrib/utils/convertrc/makefile.bcc b/contrib/utils/convertrc/makefile.bcc
index 2944c3a784..221c79a2ff 100644
--- a/contrib/utils/convertrc/makefile.bcc
+++ b/contrib/utils/convertrc/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 CONVERTRC_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH -I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 CONVERTRC_OBJECTS =  \
 	$(OBJS)\convertrc_convert.obj \
 	$(OBJS)\convertrc_rc2wxr.obj \
@@ -146,6 +146,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -231,5 +237,5 @@ $(OBJS)\convertrc_wxr2xml.obj: .\wxr2xml.cpp
 	$(CXX) -q -c -P -o$@ $(CONVERTRC_CXXFLAGS) $**
 
 $(OBJS)\convertrc_wxconvert.res: .\wxconvert.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH -i.\..\..\include $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH -i.\..\..\include $**
 
diff --git a/contrib/utils/convertrc/makefile.gcc b/contrib/utils/convertrc/makefile.gcc
index 17d2327b08..0f0f604331 100644
--- a/contrib/utils/convertrc/makefile.gcc
+++ b/contrib/utils/convertrc/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 CONVERTRC_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH -I.\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 CONVERTRC_OBJECTS =  \
 	$(OBJS)\convertrc_convert.o \
 	$(OBJS)\convertrc_rc2wxr.o \
@@ -137,6 +137,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -224,7 +230,7 @@ $(OBJS)\convertrc_wxr2xml.o: ./wxr2xml.cpp
 	$(CXX) -c -o $@ $(CONVERTRC_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\convertrc_wxconvert_rc.o: ./wxconvert.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH --include-dir ./../../include
 
 .PHONY: all clean
 
diff --git a/contrib/utils/convertrc/makefile.vc b/contrib/utils/convertrc/makefile.vc
index 01b5e150e6..a99e27a583 100644
--- a/contrib/utils/convertrc/makefile.vc
+++ b/contrib/utils/convertrc/makefile.vc
@@ -22,10 +22,10 @@ CONVERTRC_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\convertrc.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	/I.\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH /I.\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 CONVERTRC_OBJECTS =  \
 	$(OBJS)\convertrc_convert.obj \
 	$(OBJS)\convertrc_rc2wxr.obj \
@@ -212,6 +212,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -282,5 +288,5 @@ $(OBJS)\convertrc_wxr2xml.obj: .\wxr2xml.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(CONVERTRC_CXXFLAGS) $**
 
 $(OBJS)\convertrc_wxconvert.res: .\wxconvert.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH /i .\..\..\include $**
 
diff --git a/contrib/utils/convertrc/makefile.wat b/contrib/utils/convertrc/makefile.wat
index 2845fe9053..115f60055b 100644
--- a/contrib/utils/convertrc/makefile.wat
+++ b/contrib/utils/convertrc/makefile.wat
@@ -266,5 +266,5 @@ $(OBJS)\convertrc_wxr2xml.obj :  .AUTODEPEND .\wxr2xml.cpp
 	$(CXX) -zq -fo=$^@ $(CONVERTRC_CXXFLAGS) $<
 
 $(OBJS)\convertrc_wxconvert.res :  .AUTODEPEND .\wxconvert.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH -i=.\..\..\include $<
 
diff --git a/demos/bombs/Makefile.in b/demos/bombs/Makefile.in
index d82d68e833..6bc40a7ad3 100644
--- a/demos/bombs/Makefile.in
+++ b/demos/bombs/Makefile.in
@@ -183,7 +183,7 @@ bombs_game.o: $(srcdir)/game.cpp
 	$(CXXC) -c -o $@ $(BOMBS_CXXFLAGS) $(srcdir)/game.cpp
 
 bombs_bombs_rc.o: $(srcdir)/bombs.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/demos/bombs/makefile.bcc b/demos/bombs/makefile.bcc
index 441a8fbc31..5d0df7bfd3 100644
--- a/demos/bombs/makefile.bcc
+++ b/demos/bombs/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 BOMBS_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 BOMBS_OBJECTS =  \
 	$(OBJS)\bombs_bombs.obj \
 	$(OBJS)\bombs_bombs1.obj \
@@ -144,6 +145,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -222,5 +229,5 @@ $(OBJS)\bombs_game.obj: .\game.cpp
 	$(CXX) -q -c -P -o$@ $(BOMBS_CXXFLAGS) $**
 
 $(OBJS)\bombs_bombs.res: .\bombs.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/demos/bombs/makefile.gcc b/demos/bombs/makefile.gcc
index db8ad5e331..e75b1c3c57 100644
--- a/demos/bombs/makefile.gcc
+++ b/demos/bombs/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 BOMBS_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 BOMBS_OBJECTS =  \
 	$(OBJS)\bombs_bombs.o \
 	$(OBJS)\bombs_bombs1.o \
@@ -135,6 +136,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -215,7 +222,7 @@ $(OBJS)\bombs_game.o: ./game.cpp
 	$(CXX) -c -o $@ $(BOMBS_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\bombs_bombs_rc.o: ./bombs.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/demos/bombs/makefile.vc b/demos/bombs/makefile.vc
index 7e60221afc..3911f78065 100644
--- a/demos/bombs/makefile.vc
+++ b/demos/bombs/makefile.vc
@@ -22,9 +22,10 @@ BOMBS_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\bombs.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 BOMBS_OBJECTS =  \
 	$(OBJS)\bombs_bombs.obj \
 	$(OBJS)\bombs_bombs1.obj \
@@ -210,6 +211,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -273,5 +280,5 @@ $(OBJS)\bombs_game.obj: .\game.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(BOMBS_CXXFLAGS) $**
 
 $(OBJS)\bombs_bombs.res: .\bombs.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/demos/bombs/makefile.wat b/demos/bombs/makefile.wat
index 27b3f00573..04aeced354 100644
--- a/demos/bombs/makefile.wat
+++ b/demos/bombs/makefile.wat
@@ -256,5 +256,5 @@ $(OBJS)\bombs_game.obj :  .AUTODEPEND .\game.cpp
 	$(CXX) -zq -fo=$^@ $(BOMBS_CXXFLAGS) $<
 
 $(OBJS)\bombs_bombs.res :  .AUTODEPEND .\bombs.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/demos/dbbrowse/Makefile.in b/demos/dbbrowse/Makefile.in
index 08acbe013b..0a01f234fe 100644
--- a/demos/dbbrowse/Makefile.in
+++ b/demos/dbbrowse/Makefile.in
@@ -245,7 +245,7 @@ dbbrowse_dlguser.o: $(srcdir)/dlguser.cpp
 	$(CXXC) -c -o $@ $(DBBROWSE_CXXFLAGS) $(srcdir)/dlguser.cpp
 
 dbbrowse_dbbrowse_rc.o: $(srcdir)/dbbrowse.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/demos/dbbrowse/makefile.bcc b/demos/dbbrowse/makefile.bcc
index 31ab4b7aa5..c324e25230 100644
--- a/demos/dbbrowse/makefile.bcc
+++ b/demos/dbbrowse/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 DBBROWSE_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 DBBROWSE_OBJECTS =  \
 	$(OBJS)\dbbrowse_dbbrowse.obj \
 	$(OBJS)\dbbrowse_doc.obj \
@@ -152,6 +153,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -271,5 +278,5 @@ $(OBJS)\dbbrowse_dlguser.obj: .\dlguser.cpp
 	$(CXX) -q -c -P -o$@ $(DBBROWSE_CXXFLAGS) $**
 
 $(OBJS)\dbbrowse_dbbrowse.res: .\dbbrowse.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/demos/dbbrowse/makefile.gcc b/demos/dbbrowse/makefile.gcc
index 31cc3e1590..842b06585c 100644
--- a/demos/dbbrowse/makefile.gcc
+++ b/demos/dbbrowse/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 DBBROWSE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 DBBROWSE_OBJECTS =  \
 	$(OBJS)\dbbrowse_dbbrowse.o \
 	$(OBJS)\dbbrowse_doc.o \
@@ -143,6 +144,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -266,7 +273,7 @@ $(OBJS)\dbbrowse_dlguser.o: ./dlguser.cpp
 	$(CXX) -c -o $@ $(DBBROWSE_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\dbbrowse_dbbrowse_rc.o: ./dbbrowse.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data_help_std data_help_png
 
diff --git a/demos/dbbrowse/makefile.vc b/demos/dbbrowse/makefile.vc
index 11cc58ff8e..4f8f3f102b 100644
--- a/demos/dbbrowse/makefile.vc
+++ b/demos/dbbrowse/makefile.vc
@@ -22,9 +22,10 @@ DBBROWSE_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\dbbrowse.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 DBBROWSE_OBJECTS =  \
 	$(OBJS)\dbbrowse_dbbrowse.obj \
 	$(OBJS)\dbbrowse_doc.obj \
@@ -218,6 +219,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -322,5 +329,5 @@ $(OBJS)\dbbrowse_dlguser.obj: .\dlguser.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DBBROWSE_CXXFLAGS) $**
 
 $(OBJS)\dbbrowse_dbbrowse.res: .\dbbrowse.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/demos/dbbrowse/makefile.wat b/demos/dbbrowse/makefile.wat
index 18db215f99..b857b337e7 100644
--- a/demos/dbbrowse/makefile.wat
+++ b/demos/dbbrowse/makefile.wat
@@ -312,5 +312,5 @@ $(OBJS)\dbbrowse_dlguser.obj :  .AUTODEPEND .\dlguser.cpp
 	$(CXX) -zq -fo=$^@ $(DBBROWSE_CXXFLAGS) $<
 
 $(OBJS)\dbbrowse_dbbrowse.res :  .AUTODEPEND .\dbbrowse.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/demos/forty/Makefile.in b/demos/forty/Makefile.in
index 2670214ddd..c0e2b45ba0 100644
--- a/demos/forty/Makefile.in
+++ b/demos/forty/Makefile.in
@@ -224,7 +224,7 @@ forty_scorefil.o: $(srcdir)/scorefil.cpp
 	$(CXXC) -c -o $@ $(FORTY_CXXFLAGS) $(srcdir)/scorefil.cpp
 
 forty_forty_rc.o: $(srcdir)/forty.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/demos/forty/makefile.bcc b/demos/forty/makefile.bcc
index 839c722748..4a86f70584 100644
--- a/demos/forty/makefile.bcc
+++ b/demos/forty/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 FORTY_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 FORTY_OBJECTS =  \
 	$(OBJS)\forty_forty.obj \
 	$(OBJS)\forty_canvas.obj \
@@ -149,6 +150,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -254,5 +261,5 @@ $(OBJS)\forty_scorefil.obj: .\scorefil.cpp
 	$(CXX) -q -c -P -o$@ $(FORTY_CXXFLAGS) $**
 
 $(OBJS)\forty_forty.res: .\forty.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/demos/forty/makefile.gcc b/demos/forty/makefile.gcc
index 06d57bff99..e8be6a4b76 100644
--- a/demos/forty/makefile.gcc
+++ b/demos/forty/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 FORTY_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 FORTY_OBJECTS =  \
 	$(OBJS)\forty_forty.o \
 	$(OBJS)\forty_canvas.o \
@@ -140,6 +141,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -247,7 +254,7 @@ $(OBJS)\forty_scorefil.o: ./scorefil.cpp
 	$(CXX) -c -o $@ $(FORTY_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\forty_forty_rc.o: ./forty.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/demos/forty/makefile.vc b/demos/forty/makefile.vc
index 0e04012011..ff667779d4 100644
--- a/demos/forty/makefile.vc
+++ b/demos/forty/makefile.vc
@@ -22,9 +22,10 @@ FORTY_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\forty.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 FORTY_OBJECTS =  \
 	$(OBJS)\forty_forty.obj \
 	$(OBJS)\forty_canvas.obj \
@@ -215,6 +216,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -305,5 +312,5 @@ $(OBJS)\forty_scorefil.obj: .\scorefil.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(FORTY_CXXFLAGS) $**
 
 $(OBJS)\forty_forty.res: .\forty.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/demos/forty/makefile.wat b/demos/forty/makefile.wat
index 8802250db3..2cf6a39001 100644
--- a/demos/forty/makefile.wat
+++ b/demos/forty/makefile.wat
@@ -290,5 +290,5 @@ $(OBJS)\forty_scorefil.obj :  .AUTODEPEND .\scorefil.cpp
 	$(CXX) -zq -fo=$^@ $(FORTY_CXXFLAGS) $<
 
 $(OBJS)\forty_forty.res :  .AUTODEPEND .\forty.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/demos/fractal/Makefile.in b/demos/fractal/Makefile.in
index 526ebee4e3..b1fed10a92 100644
--- a/demos/fractal/Makefile.in
+++ b/demos/fractal/Makefile.in
@@ -176,7 +176,7 @@ fractal_fractal.o: $(srcdir)/fractal.cpp
 	$(CXXC) -c -o $@ $(FRACTAL_CXXFLAGS) $(srcdir)/fractal.cpp
 
 fractal_fractal_rc.o: $(srcdir)/fractal.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/demos/fractal/makefile.bcc b/demos/fractal/makefile.bcc
index ef9de46456..cb3c36b321 100644
--- a/demos/fractal/makefile.bcc
+++ b/demos/fractal/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 FRACTAL_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 FRACTAL_OBJECTS =  \
 	$(OBJS)\fractal_fractal.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\fractal_fractal.obj: .\fractal.cpp
 	$(CXX) -q -c -P -o$@ $(FRACTAL_CXXFLAGS) $**
 
 $(OBJS)\fractal_fractal.res: .\fractal.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/demos/fractal/makefile.gcc b/demos/fractal/makefile.gcc
index 3252f3975b..efcb3654a4 100644
--- a/demos/fractal/makefile.gcc
+++ b/demos/fractal/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 FRACTAL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 FRACTAL_OBJECTS =  \
 	$(OBJS)\fractal_fractal.o \
 	$(OBJS)\fractal_fractal_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\fractal_fractal.o: ./fractal.cpp
 	$(CXX) -c -o $@ $(FRACTAL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\fractal_fractal_rc.o: ./fractal.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/demos/fractal/makefile.vc b/demos/fractal/makefile.vc
index 5f1e0c0c48..9293a3ee3b 100644
--- a/demos/fractal/makefile.vc
+++ b/demos/fractal/makefile.vc
@@ -22,9 +22,10 @@ FRACTAL_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\fractal.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 FRACTAL_OBJECTS =  \
 	$(OBJS)\fractal_fractal.obj \
 	$(OBJS)\fractal_fractal.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\fractal_fractal.obj: .\fractal.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(FRACTAL_CXXFLAGS) $**
 
 $(OBJS)\fractal_fractal.res: .\fractal.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/demos/fractal/makefile.wat b/demos/fractal/makefile.wat
index be6e8ac518..f60420e386 100644
--- a/demos/fractal/makefile.wat
+++ b/demos/fractal/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\fractal_fractal.obj :  .AUTODEPEND .\fractal.cpp
 	$(CXX) -zq -fo=$^@ $(FRACTAL_CXXFLAGS) $<
 
 $(OBJS)\fractal_fractal.res :  .AUTODEPEND .\fractal.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/demos/life/Makefile.in b/demos/life/Makefile.in
index 6e637e2adc..c62eab8a1c 100644
--- a/demos/life/Makefile.in
+++ b/demos/life/Makefile.in
@@ -198,7 +198,7 @@ life_reader.o: $(srcdir)/reader.cpp
 	$(CXXC) -c -o $@ $(LIFE_CXXFLAGS) $(srcdir)/reader.cpp
 
 life_life_rc.o: $(srcdir)/life.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/demos/life/makefile.bcc b/demos/life/makefile.bcc
index 7c49dd8d16..55c608469e 100644
--- a/demos/life/makefile.bcc
+++ b/demos/life/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 LIFE_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 LIFE_OBJECTS =  \
 	$(OBJS)\life_life.obj \
 	$(OBJS)\life_dialogs.obj \
@@ -145,6 +146,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -230,5 +237,5 @@ $(OBJS)\life_reader.obj: .\reader.cpp
 	$(CXX) -q -c -P -o$@ $(LIFE_CXXFLAGS) $**
 
 $(OBJS)\life_life.res: .\life.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/demos/life/makefile.gcc b/demos/life/makefile.gcc
index 41ea35c037..5dbd35d96c 100644
--- a/demos/life/makefile.gcc
+++ b/demos/life/makefile.gcc
@@ -22,8 +22,8 @@ SETUPHDIR = \
 LIFE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
 	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 LIFE_OBJECTS =  \
 	$(OBJS)\life_life.o \
@@ -136,6 +136,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -223,7 +229,7 @@ $(OBJS)\life_reader.o: ./reader.cpp
 	$(CXX) -c -o $@ $(LIFE_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\life_life_rc.o: ./life.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/demos/life/makefile.vc b/demos/life/makefile.vc
index 163eef4651..1115330097 100644
--- a/demos/life/makefile.vc
+++ b/demos/life/makefile.vc
@@ -22,9 +22,10 @@ LIFE_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\life.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 LIFE_OBJECTS =  \
 	$(OBJS)\life_life.obj \
 	$(OBJS)\life_dialogs.obj \
@@ -211,6 +212,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -281,5 +288,5 @@ $(OBJS)\life_reader.obj: .\reader.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(LIFE_CXXFLAGS) $**
 
 $(OBJS)\life_life.res: .\life.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/demos/life/makefile.wat b/demos/life/makefile.wat
index 2d6595c895..7430d0df1a 100644
--- a/demos/life/makefile.wat
+++ b/demos/life/makefile.wat
@@ -264,5 +264,5 @@ $(OBJS)\life_reader.obj :  .AUTODEPEND .\reader.cpp
 	$(CXX) -zq -fo=$^@ $(LIFE_CXXFLAGS) $<
 
 $(OBJS)\life_life.res :  .AUTODEPEND .\life.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/demos/poem/Makefile.in b/demos/poem/Makefile.in
index edfb6e2dd3..f0f53c11c1 100644
--- a/demos/poem/Makefile.in
+++ b/demos/poem/Makefile.in
@@ -192,7 +192,7 @@ wxpoem_wxpoem.o: $(srcdir)/wxpoem.cpp
 	$(CXXC) -c -o $@ $(WXPOEM_CXXFLAGS) $(srcdir)/wxpoem.cpp
 
 wxpoem_wxpoem_rc.o: $(srcdir)/wxpoem.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/demos/poem/makefile.bcc b/demos/poem/makefile.bcc
index 6de1bd1f63..4236b17531 100644
--- a/demos/poem/makefile.bcc
+++ b/demos/poem/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 WXPOEM_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 WXPOEM_OBJECTS =  \
 	$(OBJS)\wxpoem_wxpoem.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -222,5 +229,5 @@ $(OBJS)\wxpoem_wxpoem.obj: .\wxpoem.cpp
 	$(CXX) -q -c -P -o$@ $(WXPOEM_CXXFLAGS) $**
 
 $(OBJS)\wxpoem_wxpoem.res: .\wxpoem.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/demos/poem/makefile.gcc b/demos/poem/makefile.gcc
index b9ca29dfe7..384aa21fb3 100644
--- a/demos/poem/makefile.gcc
+++ b/demos/poem/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 WXPOEM_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 WXPOEM_OBJECTS =  \
 	$(OBJS)\wxpoem_wxpoem.o \
 	$(OBJS)\wxpoem_wxpoem_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -215,7 +222,7 @@ $(OBJS)\wxpoem_wxpoem.o: ./wxpoem.cpp
 	$(CXX) -c -o $@ $(WXPOEM_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\wxpoem_wxpoem_rc.o: ./wxpoem.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/demos/poem/makefile.vc b/demos/poem/makefile.vc
index 3650c30673..1f4f466c6b 100644
--- a/demos/poem/makefile.vc
+++ b/demos/poem/makefile.vc
@@ -22,9 +22,10 @@ WXPOEM_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\wxpoem.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 WXPOEM_OBJECTS =  \
 	$(OBJS)\wxpoem_wxpoem.obj \
 	$(OBJS)\wxpoem_wxpoem.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -273,5 +280,5 @@ $(OBJS)\wxpoem_wxpoem.obj: .\wxpoem.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(WXPOEM_CXXFLAGS) $**
 
 $(OBJS)\wxpoem_wxpoem.res: .\wxpoem.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/demos/poem/makefile.wat b/demos/poem/makefile.wat
index ed9b96fb12..edaadb68bb 100644
--- a/demos/poem/makefile.wat
+++ b/demos/poem/makefile.wat
@@ -257,5 +257,5 @@ $(OBJS)\wxpoem_wxpoem.obj :  .AUTODEPEND .\wxpoem.cpp
 	$(CXX) -zq -fo=$^@ $(WXPOEM_CXXFLAGS) $<
 
 $(OBJS)\wxpoem_wxpoem.res :  .AUTODEPEND .\wxpoem.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/access/Makefile.in b/samples/access/Makefile.in
index 7d85c6e4bb..ff500cc098 100644
--- a/samples/access/Makefile.in
+++ b/samples/access/Makefile.in
@@ -176,7 +176,7 @@ accesstest_accesstest.o: $(srcdir)/accesstest.cpp
 	$(CXXC) -c -o $@ $(ACCESSTEST_CXXFLAGS) $(srcdir)/accesstest.cpp
 
 accesstest_accesstest_rc.o: $(srcdir)/accesstest.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/access/makefile.bcc b/samples/access/makefile.bcc
index c3f57587fc..044d9102c0 100644
--- a/samples/access/makefile.bcc
+++ b/samples/access/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 ACCESSTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 ACCESSTEST_OBJECTS =  \
 	$(OBJS)\accesstest_accesstest.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\accesstest_accesstest.obj: .\accesstest.cpp
 	$(CXX) -q -c -P -o$@ $(ACCESSTEST_CXXFLAGS) $**
 
 $(OBJS)\accesstest_accesstest.res: .\accesstest.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/access/makefile.gcc b/samples/access/makefile.gcc
index 1b0f014ada..d65d426844 100644
--- a/samples/access/makefile.gcc
+++ b/samples/access/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 ACCESSTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 ACCESSTEST_OBJECTS =  \
 	$(OBJS)\accesstest_accesstest.o \
 	$(OBJS)\accesstest_accesstest_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\accesstest_accesstest.o: ./accesstest.cpp
 	$(CXX) -c -o $@ $(ACCESSTEST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\accesstest_accesstest_rc.o: ./accesstest.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/access/makefile.vc b/samples/access/makefile.vc
index 6791567102..a77a994715 100644
--- a/samples/access/makefile.vc
+++ b/samples/access/makefile.vc
@@ -22,9 +22,10 @@ ACCESSTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\accesstest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 ACCESSTEST_OBJECTS =  \
 	$(OBJS)\accesstest_accesstest.obj \
 	$(OBJS)\accesstest_accesstest.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\accesstest_accesstest.obj: .\accesstest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(ACCESSTEST_CXXFLAGS) $**
 
 $(OBJS)\accesstest_accesstest.res: .\accesstest.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/access/makefile.wat b/samples/access/makefile.wat
index 75cd9b2f8e..9011bd1be7 100644
--- a/samples/access/makefile.wat
+++ b/samples/access/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\accesstest_accesstest.obj :  .AUTODEPEND .\accesstest.cpp
 	$(CXX) -zq -fo=$^@ $(ACCESSTEST_CXXFLAGS) $<
 
 $(OBJS)\accesstest_accesstest.res :  .AUTODEPEND .\accesstest.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/artprov/Makefile.in b/samples/artprov/Makefile.in
index 0b7d4de8d5..be6ab206e0 100644
--- a/samples/artprov/Makefile.in
+++ b/samples/artprov/Makefile.in
@@ -180,7 +180,7 @@ arttest_artbrows.o: $(srcdir)/artbrows.cpp
 	$(CXXC) -c -o $@ $(ARTTEST_CXXFLAGS) $(srcdir)/artbrows.cpp
 
 arttest_arttest_rc.o: $(srcdir)/arttest.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/artprov/makefile.bcc b/samples/artprov/makefile.bcc
index 614556eaaf..eba407913d 100644
--- a/samples/artprov/makefile.bcc
+++ b/samples/artprov/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 ARTTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 ARTTEST_OBJECTS =  \
 	$(OBJS)\arttest_arttest.obj \
 	$(OBJS)\arttest_artbrows.obj
@@ -143,6 +144,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\arttest_artbrows.obj: .\artbrows.cpp
 	$(CXX) -q -c -P -o$@ $(ARTTEST_CXXFLAGS) $**
 
 $(OBJS)\arttest_arttest.res: .\arttest.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/artprov/makefile.gcc b/samples/artprov/makefile.gcc
index 41b63ad161..61eec89239 100644
--- a/samples/artprov/makefile.gcc
+++ b/samples/artprov/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 ARTTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 ARTTEST_OBJECTS =  \
 	$(OBJS)\arttest_arttest.o \
 	$(OBJS)\arttest_artbrows.o \
@@ -134,6 +135,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +218,7 @@ $(OBJS)\arttest_artbrows.o: ./artbrows.cpp
 	$(CXX) -c -o $@ $(ARTTEST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\arttest_arttest_rc.o: ./arttest.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/artprov/makefile.vc b/samples/artprov/makefile.vc
index 1347d1c4c6..c2f8e9d065 100644
--- a/samples/artprov/makefile.vc
+++ b/samples/artprov/makefile.vc
@@ -22,9 +22,10 @@ ARTTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\arttest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 ARTTEST_OBJECTS =  \
 	$(OBJS)\arttest_arttest.obj \
 	$(OBJS)\arttest_artbrows.obj \
@@ -209,6 +210,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\arttest_artbrows.obj: .\artbrows.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(ARTTEST_CXXFLAGS) $**
 
 $(OBJS)\arttest_arttest.res: .\arttest.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/artprov/makefile.wat b/samples/artprov/makefile.wat
index 65dc586a44..d8a60f31ae 100644
--- a/samples/artprov/makefile.wat
+++ b/samples/artprov/makefile.wat
@@ -252,5 +252,5 @@ $(OBJS)\arttest_artbrows.obj :  .AUTODEPEND .\artbrows.cpp
 	$(CXX) -zq -fo=$^@ $(ARTTEST_CXXFLAGS) $<
 
 $(OBJS)\arttest_arttest.res :  .AUTODEPEND .\arttest.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/calendar/Makefile.in b/samples/calendar/Makefile.in
index dcd6270311..83833a15e4 100644
--- a/samples/calendar/Makefile.in
+++ b/samples/calendar/Makefile.in
@@ -181,7 +181,7 @@ calendar_calendar.o: $(srcdir)/calendar.cpp
 	$(CXXC) -c -o $@ $(CALENDAR_CXXFLAGS) $(srcdir)/calendar.cpp
 
 calendar_calendar_rc.o: $(srcdir)/calendar.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/calendar/makefile.bcc b/samples/calendar/makefile.bcc
index 5249c0ab99..4d3c74af56 100644
--- a/samples/calendar/makefile.bcc
+++ b/samples/calendar/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 CALENDAR_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 CALENDAR_OBJECTS =  \
 	$(OBJS)\calendar_calendar.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\calendar_calendar.obj: .\calendar.cpp
 	$(CXX) -q -c -P -o$@ $(CALENDAR_CXXFLAGS) $**
 
 $(OBJS)\calendar_calendar.res: .\calendar.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/calendar/makefile.gcc b/samples/calendar/makefile.gcc
index d70a7df4ae..8be3b316ae 100644
--- a/samples/calendar/makefile.gcc
+++ b/samples/calendar/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 CALENDAR_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 CALENDAR_OBJECTS =  \
 	$(OBJS)\calendar_calendar.o \
 	$(OBJS)\calendar_calendar_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +218,7 @@ $(OBJS)\calendar_calendar.o: ./calendar.cpp
 	$(CXX) -c -o $@ $(CALENDAR_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\calendar_calendar_rc.o: ./calendar.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/calendar/makefile.vc b/samples/calendar/makefile.vc
index d486dc6c1b..2669d4b7d0 100644
--- a/samples/calendar/makefile.vc
+++ b/samples/calendar/makefile.vc
@@ -22,9 +22,10 @@ CALENDAR_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\calendar.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 CALENDAR_OBJECTS =  \
 	$(OBJS)\calendar_calendar.obj \
 	$(OBJS)\calendar_calendar.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\calendar_calendar.obj: .\calendar.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(CALENDAR_CXXFLAGS) $**
 
 $(OBJS)\calendar_calendar.res: .\calendar.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/calendar/makefile.wat b/samples/calendar/makefile.wat
index 95fb8ab488..cefc630a5b 100644
--- a/samples/calendar/makefile.wat
+++ b/samples/calendar/makefile.wat
@@ -253,5 +253,5 @@ $(OBJS)\calendar_calendar.obj :  .AUTODEPEND .\calendar.cpp
 	$(CXX) -zq -fo=$^@ $(CALENDAR_CXXFLAGS) $<
 
 $(OBJS)\calendar_calendar.res :  .AUTODEPEND .\calendar.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/caret/Makefile.in b/samples/caret/Makefile.in
index af6baa40f5..eee67977ed 100644
--- a/samples/caret/Makefile.in
+++ b/samples/caret/Makefile.in
@@ -175,7 +175,7 @@ caret_caret.o: $(srcdir)/caret.cpp
 	$(CXXC) -c -o $@ $(CARET_CXXFLAGS) $(srcdir)/caret.cpp
 
 caret_caret_rc.o: $(srcdir)/caret.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/caret/makefile.bcc b/samples/caret/makefile.bcc
index b5bb3dc2ae..6a2ba81dfb 100644
--- a/samples/caret/makefile.bcc
+++ b/samples/caret/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 CARET_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 CARET_OBJECTS =  \
 	$(OBJS)\caret_caret.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\caret_caret.obj: .\caret.cpp
 	$(CXX) -q -c -P -o$@ $(CARET_CXXFLAGS) $**
 
 $(OBJS)\caret_caret.res: .\caret.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/caret/makefile.gcc b/samples/caret/makefile.gcc
index 89fda8b5f1..7c1fc3db87 100644
--- a/samples/caret/makefile.gcc
+++ b/samples/caret/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 CARET_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 CARET_OBJECTS =  \
 	$(OBJS)\caret_caret.o \
 	$(OBJS)\caret_caret_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\caret_caret.o: ./caret.cpp
 	$(CXX) -c -o $@ $(CARET_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\caret_caret_rc.o: ./caret.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/caret/makefile.vc b/samples/caret/makefile.vc
index fb62eb9acb..65a34abe80 100644
--- a/samples/caret/makefile.vc
+++ b/samples/caret/makefile.vc
@@ -22,9 +22,10 @@ CARET_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\caret.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 CARET_OBJECTS =  \
 	$(OBJS)\caret_caret.obj \
 	$(OBJS)\caret_caret.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\caret_caret.obj: .\caret.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(CARET_CXXFLAGS) $**
 
 $(OBJS)\caret_caret.res: .\caret.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/caret/makefile.wat b/samples/caret/makefile.wat
index a44fee0ffb..e6a01b9f00 100644
--- a/samples/caret/makefile.wat
+++ b/samples/caret/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\caret_caret.obj :  .AUTODEPEND .\caret.cpp
 	$(CXX) -zq -fo=$^@ $(CARET_CXXFLAGS) $<
 
 $(OBJS)\caret_caret.res :  .AUTODEPEND .\caret.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/checklst/Makefile.in b/samples/checklst/Makefile.in
index 522422a3cb..0ef8703d77 100644
--- a/samples/checklst/Makefile.in
+++ b/samples/checklst/Makefile.in
@@ -176,7 +176,7 @@ checklst_checklst.o: $(srcdir)/checklst.cpp
 	$(CXXC) -c -o $@ $(CHECKLST_CXXFLAGS) $(srcdir)/checklst.cpp
 
 checklst_checklst_rc.o: $(srcdir)/checklst.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/checklst/makefile.bcc b/samples/checklst/makefile.bcc
index 7e2c134465..15f24e5c5c 100644
--- a/samples/checklst/makefile.bcc
+++ b/samples/checklst/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 CHECKLST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 CHECKLST_OBJECTS =  \
 	$(OBJS)\checklst_checklst.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\checklst_checklst.obj: .\checklst.cpp
 	$(CXX) -q -c -P -o$@ $(CHECKLST_CXXFLAGS) $**
 
 $(OBJS)\checklst_checklst.res: .\checklst.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/checklst/makefile.gcc b/samples/checklst/makefile.gcc
index f49a756d1a..77569483ee 100644
--- a/samples/checklst/makefile.gcc
+++ b/samples/checklst/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 CHECKLST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 CHECKLST_OBJECTS =  \
 	$(OBJS)\checklst_checklst.o \
 	$(OBJS)\checklst_checklst_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\checklst_checklst.o: ./checklst.cpp
 	$(CXX) -c -o $@ $(CHECKLST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\checklst_checklst_rc.o: ./checklst.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/checklst/makefile.vc b/samples/checklst/makefile.vc
index 06c7a5da9c..0c5645ac2e 100644
--- a/samples/checklst/makefile.vc
+++ b/samples/checklst/makefile.vc
@@ -22,9 +22,10 @@ CHECKLST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\checklst.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 CHECKLST_OBJECTS =  \
 	$(OBJS)\checklst_checklst.obj \
 	$(OBJS)\checklst_checklst.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\checklst_checklst.obj: .\checklst.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(CHECKLST_CXXFLAGS) $**
 
 $(OBJS)\checklst_checklst.res: .\checklst.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/checklst/makefile.wat b/samples/checklst/makefile.wat
index 1608675bf9..c308ad10bd 100644
--- a/samples/checklst/makefile.wat
+++ b/samples/checklst/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\checklst_checklst.obj :  .AUTODEPEND .\checklst.cpp
 	$(CXX) -zq -fo=$^@ $(CHECKLST_CXXFLAGS) $<
 
 $(OBJS)\checklst_checklst.res :  .AUTODEPEND .\checklst.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/config/Makefile.in b/samples/config/Makefile.in
index cba332b838..fa012f820f 100644
--- a/samples/config/Makefile.in
+++ b/samples/config/Makefile.in
@@ -176,7 +176,7 @@ conftest_conftest.o: $(srcdir)/conftest.cpp
 	$(CXXC) -c -o $@ $(CONFTEST_CXXFLAGS) $(srcdir)/conftest.cpp
 
 conftest_conftest_rc.o: $(srcdir)/conftest.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/config/makefile.bcc b/samples/config/makefile.bcc
index 11c143d5e4..961b59b6a2 100644
--- a/samples/config/makefile.bcc
+++ b/samples/config/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 CONFTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 CONFTEST_OBJECTS =  \
 	$(OBJS)\conftest_conftest.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\conftest_conftest.obj: .\conftest.cpp
 	$(CXX) -q -c -P -o$@ $(CONFTEST_CXXFLAGS) $**
 
 $(OBJS)\conftest_conftest.res: .\conftest.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/config/makefile.gcc b/samples/config/makefile.gcc
index d07e2bcefe..761d14df44 100644
--- a/samples/config/makefile.gcc
+++ b/samples/config/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 CONFTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 CONFTEST_OBJECTS =  \
 	$(OBJS)\conftest_conftest.o \
 	$(OBJS)\conftest_conftest_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\conftest_conftest.o: ./conftest.cpp
 	$(CXX) -c -o $@ $(CONFTEST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\conftest_conftest_rc.o: ./conftest.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/config/makefile.vc b/samples/config/makefile.vc
index 6b2d5775a2..f9d519b612 100644
--- a/samples/config/makefile.vc
+++ b/samples/config/makefile.vc
@@ -22,9 +22,10 @@ CONFTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\conftest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 CONFTEST_OBJECTS =  \
 	$(OBJS)\conftest_conftest.obj \
 	$(OBJS)\conftest_conftest.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\conftest_conftest.obj: .\conftest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(CONFTEST_CXXFLAGS) $**
 
 $(OBJS)\conftest_conftest.res: .\conftest.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/config/makefile.wat b/samples/config/makefile.wat
index 4e3e9b15b5..246fd3576e 100644
--- a/samples/config/makefile.wat
+++ b/samples/config/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\conftest_conftest.obj :  .AUTODEPEND .\conftest.cpp
 	$(CXX) -zq -fo=$^@ $(CONFTEST_CXXFLAGS) $<
 
 $(OBJS)\conftest_conftest.res :  .AUTODEPEND .\conftest.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/console/makefile.bcc b/samples/console/makefile.bcc
index d41e8fb664..b38b705cd6 100644
--- a/samples/console/makefile.bcc
+++ b/samples/console/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 CONSOLE_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(CPPFLAGS) \
+	$(CXXFLAGS)
 CONSOLE_OBJECTS =  \
 	$(OBJS)\console_console.obj
 
@@ -121,6 +122,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
diff --git a/samples/console/makefile.gcc b/samples/console/makefile.gcc
index bf2ef14acf..3292516f5c 100644
--- a/samples/console/makefile.gcc
+++ b/samples/console/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 CONSOLE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 CONSOLE_OBJECTS =  \
 	$(OBJS)\console_console.o
 
@@ -109,6 +110,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
diff --git a/samples/console/makefile.vc b/samples/console/makefile.vc
index e661d456dd..d300dfb137 100644
--- a/samples/console/makefile.vc
+++ b/samples/console/makefile.vc
@@ -22,9 +22,9 @@ CONSOLE_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\console.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_CONSOLE /DwxUSE_GUI=0 $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_CONSOLE \
+	/DwxUSE_GUI=0 $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 CONSOLE_OBJECTS =  \
 	$(OBJS)\console_console.obj
 
@@ -168,6 +168,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
diff --git a/samples/controls/Makefile.in b/samples/controls/Makefile.in
index 925318e4b1..f6bdbf270d 100644
--- a/samples/controls/Makefile.in
+++ b/samples/controls/Makefile.in
@@ -188,7 +188,7 @@ controls_controls.o: $(srcdir)/controls.cpp
 	$(CXXC) -c -o $@ $(CONTROLS_CXXFLAGS) $(srcdir)/controls.cpp
 
 controls_controls_rc.o: $(srcdir)/controls.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/controls/makefile.bcc b/samples/controls/makefile.bcc
index e699889c97..6f58e1a0d3 100644
--- a/samples/controls/makefile.bcc
+++ b/samples/controls/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 CONTROLS_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 CONTROLS_OBJECTS =  \
 	$(OBJS)\controls_controls.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\controls_controls.obj: .\controls.cpp
 	$(CXX) -q -c -P -o$@ $(CONTROLS_CXXFLAGS) $**
 
 $(OBJS)\controls_controls.res: .\controls.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/controls/makefile.gcc b/samples/controls/makefile.gcc
index 5e6557ad3f..0024800eef 100644
--- a/samples/controls/makefile.gcc
+++ b/samples/controls/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 CONTROLS_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 CONTROLS_OBJECTS =  \
 	$(OBJS)\controls_controls.o \
 	$(OBJS)\controls_controls_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +218,7 @@ $(OBJS)\controls_controls.o: ./controls.cpp
 	$(CXX) -c -o $@ $(CONTROLS_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\controls_controls_rc.o: ./controls.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/controls/makefile.vc b/samples/controls/makefile.vc
index 9f1a6652f7..ce8d9bf4a6 100644
--- a/samples/controls/makefile.vc
+++ b/samples/controls/makefile.vc
@@ -22,9 +22,10 @@ CONTROLS_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\controls.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 CONTROLS_OBJECTS =  \
 	$(OBJS)\controls_controls.obj \
 	$(OBJS)\controls_controls.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\controls_controls.obj: .\controls.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(CONTROLS_CXXFLAGS) $**
 
 $(OBJS)\controls_controls.res: .\controls.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/controls/makefile.wat b/samples/controls/makefile.wat
index a0d710c013..8e60eca2bd 100644
--- a/samples/controls/makefile.wat
+++ b/samples/controls/makefile.wat
@@ -252,5 +252,5 @@ $(OBJS)\controls_controls.obj :  .AUTODEPEND .\controls.cpp
 	$(CXX) -zq -fo=$^@ $(CONTROLS_CXXFLAGS) $<
 
 $(OBJS)\controls_controls.res :  .AUTODEPEND .\controls.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/db/Makefile.in b/samples/db/Makefile.in
index 139acb68b3..fb63d4bdf9 100644
--- a/samples/db/Makefile.in
+++ b/samples/db/Makefile.in
@@ -193,7 +193,7 @@ dbtest_listdb.o: $(srcdir)/listdb.cpp
 	$(CXXC) -c -o $@ $(DBTEST_CXXFLAGS) $(srcdir)/listdb.cpp
 
 dbtest_dbtest_rc.o: $(srcdir)/dbtest.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/db/makefile.bcc b/samples/db/makefile.bcc
index 767059dd59..4cec81ac5c 100644
--- a/samples/db/makefile.bcc
+++ b/samples/db/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 DBTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 DBTEST_OBJECTS =  \
 	$(OBJS)\dbtest_dbtest.obj \
 	$(OBJS)\dbtest_listdb.obj
@@ -146,6 +147,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -235,5 +242,5 @@ $(OBJS)\dbtest_listdb.obj: .\listdb.cpp
 	$(CXX) -q -c -P -o$@ $(DBTEST_CXXFLAGS) $**
 
 $(OBJS)\dbtest_dbtest.res: .\dbtest.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/db/makefile.gcc b/samples/db/makefile.gcc
index 29cfa033f4..cb075327f8 100644
--- a/samples/db/makefile.gcc
+++ b/samples/db/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 DBTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 DBTEST_OBJECTS =  \
 	$(OBJS)\dbtest_dbtest.o \
 	$(OBJS)\dbtest_listdb.o \
@@ -137,6 +138,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -230,7 +237,7 @@ $(OBJS)\dbtest_listdb.o: ./listdb.cpp
 	$(CXX) -c -o $@ $(DBTEST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\dbtest_dbtest_rc.o: ./dbtest.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/db/makefile.vc b/samples/db/makefile.vc
index b523ba8474..6893fe7cef 100644
--- a/samples/db/makefile.vc
+++ b/samples/db/makefile.vc
@@ -22,9 +22,10 @@ DBTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\dbtest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 DBTEST_OBJECTS =  \
 	$(OBJS)\dbtest_dbtest.obj \
 	$(OBJS)\dbtest_listdb.obj \
@@ -212,6 +213,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -286,5 +293,5 @@ $(OBJS)\dbtest_listdb.obj: .\listdb.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DBTEST_CXXFLAGS) $**
 
 $(OBJS)\dbtest_dbtest.res: .\dbtest.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/db/makefile.wat b/samples/db/makefile.wat
index 44c0bc468a..75a358dfad 100644
--- a/samples/db/makefile.wat
+++ b/samples/db/makefile.wat
@@ -275,5 +275,5 @@ $(OBJS)\dbtest_listdb.obj :  .AUTODEPEND .\listdb.cpp
 	$(CXX) -zq -fo=$^@ $(DBTEST_CXXFLAGS) $<
 
 $(OBJS)\dbtest_dbtest.res :  .AUTODEPEND .\dbtest.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/debugrpt/Makefile.in b/samples/debugrpt/Makefile.in
index 665978a840..d8f8726db4 100644
--- a/samples/debugrpt/Makefile.in
+++ b/samples/debugrpt/Makefile.in
@@ -180,7 +180,7 @@ debugrpt.app/Contents/PkgInfo: debugrpt$(EXEEXT) $(top_srcdir)/src/mac/carbon/In
 @COND_PLATFORM_MACOSX_1@debugrpt_bundle: $(____debugrpt_BUNDLE_TGT_REF_DEP)
 
 debugrpt_sample_rc.o: $(srcdir)/../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 debugrpt_debugrpt.o: $(srcdir)/debugrpt.cpp
 	$(CXXC) -c -o $@ $(DEBUGRPT_CXXFLAGS) $(srcdir)/debugrpt.cpp
diff --git a/samples/debugrpt/makefile.bcc b/samples/debugrpt/makefile.bcc
index b10b941a17..73ccebfdaf 100644
--- a/samples/debugrpt/makefile.bcc
+++ b/samples/debugrpt/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 DEBUGRPT_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 DEBUGRPT_OBJECTS =  \
 	$(OBJS)\debugrpt_debugrpt.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -219,7 +226,7 @@ $(OBJS)\debugrpt.exe: $(DEBUGRPT_OBJECTS)  $(OBJS)\debugrpt_sample.res
 |
 
 $(OBJS)\debugrpt_sample.res: .\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
 
 $(OBJS)\debugrpt_debugrpt.obj: .\debugrpt.cpp
 	$(CXX) -q -c -P -o$@ $(DEBUGRPT_CXXFLAGS) $**
diff --git a/samples/debugrpt/makefile.gcc b/samples/debugrpt/makefile.gcc
index a607420808..f403e53f36 100644
--- a/samples/debugrpt/makefile.gcc
+++ b/samples/debugrpt/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 DEBUGRPT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 DEBUGRPT_OBJECTS =  \
 	$(OBJS)\debugrpt_sample_rc.o \
 	$(OBJS)\debugrpt_debugrpt.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -212,7 +219,7 @@ $(OBJS)\debugrpt.exe: $(DEBUGRPT_OBJECTS) $(OBJS)\debugrpt_sample_rc.o
 	$(CXX) -o $@ $(DEBUGRPT_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  $(__WXLIB_QA_p)  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_XML_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\debugrpt_sample_rc.o: ./../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
 
 $(OBJS)\debugrpt_debugrpt.o: ./debugrpt.cpp
 	$(CXX) -c -o $@ $(DEBUGRPT_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/debugrpt/makefile.vc b/samples/debugrpt/makefile.vc
index e73fe0b7e7..d7a742562c 100644
--- a/samples/debugrpt/makefile.vc
+++ b/samples/debugrpt/makefile.vc
@@ -22,9 +22,10 @@ DEBUGRPT_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\debugrpt.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 DEBUGRPT_OBJECTS =  \
 	$(OBJS)\debugrpt_sample.res \
 	$(OBJS)\debugrpt_debugrpt.obj
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -270,7 +277,7 @@ $(OBJS)\debugrpt.exe: $(DEBUGRPT_OBJECTS) $(OBJS)\debugrpt_sample.res
 <<
 
 $(OBJS)\debugrpt_sample.res: .\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
 
 $(OBJS)\debugrpt_debugrpt.obj: .\debugrpt.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DEBUGRPT_CXXFLAGS) $**
diff --git a/samples/debugrpt/makefile.wat b/samples/debugrpt/makefile.wat
index 801bcfc090..47a24d3147 100644
--- a/samples/debugrpt/makefile.wat
+++ b/samples/debugrpt/makefile.wat
@@ -255,7 +255,7 @@ $(OBJS)\debugrpt.exe :  $(DEBUGRPT_OBJECTS) $(OBJS)\debugrpt_sample.res
 	wlink @$(OBJS)\debugrpt.lbc
 
 $(OBJS)\debugrpt_sample.res :  .AUTODEPEND .\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
 
 $(OBJS)\debugrpt_debugrpt.obj :  .AUTODEPEND .\debugrpt.cpp
 	$(CXX) -zq -fo=$^@ $(DEBUGRPT_CXXFLAGS) $<
diff --git a/samples/dialogs/Makefile.in b/samples/dialogs/Makefile.in
index 161c24268c..bcacbcc938 100644
--- a/samples/dialogs/Makefile.in
+++ b/samples/dialogs/Makefile.in
@@ -229,7 +229,7 @@ dialogs_dialogs.o: $(srcdir)/dialogs.cpp
 @COND_SHARED_0_TOOLKIT_PM_WXUNIV_0@	$(CXXC) -c -o $@ $(DIALOGS_CXXFLAGS) $(srcdir)/../../src/generic/fontdlgg.cpp
 
 dialogs_dialogs_rc.o: $(srcdir)/dialogs.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/dialogs/makefile.bcc b/samples/dialogs/makefile.bcc
index 235772ad03..e5df18d939 100644
--- a/samples/dialogs/makefile.bcc
+++ b/samples/dialogs/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 DIALOGS_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 DIALOGS_OBJECTS =  \
 	$(OBJS)\dialogs_dialogs.obj \
 	$(____GENERIC_DIALOGS_IN_NATIVE_BUILDS_FILENAMES_OBJECTS)
@@ -143,6 +144,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -242,5 +249,5 @@ $(OBJS)\dialogs_fontdlgg.obj: .\..\..\src\generic\fontdlgg.cpp
 	$(CXX) -q -c -P -o$@ $(DIALOGS_CXXFLAGS) $**
 
 $(OBJS)\dialogs_dialogs.res: .\dialogs.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/dialogs/makefile.gcc b/samples/dialogs/makefile.gcc
index 534b3e6a31..01a1246030 100644
--- a/samples/dialogs/makefile.gcc
+++ b/samples/dialogs/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 DIALOGS_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 DIALOGS_OBJECTS =  \
 	$(OBJS)\dialogs_dialogs.o \
 	$(____GENERIC_DIALOGS_IN_NATIVE_BUILDS_FILENAMES_OBJECTS) \
@@ -134,6 +135,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -237,7 +244,7 @@ $(OBJS)\dialogs_fontdlgg.o: ./../../src/generic/fontdlgg.cpp
 	$(CXX) -c -o $@ $(DIALOGS_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\dialogs_dialogs_rc.o: ./dialogs.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/dialogs/makefile.vc b/samples/dialogs/makefile.vc
index ca17194722..2191ab6aea 100644
--- a/samples/dialogs/makefile.vc
+++ b/samples/dialogs/makefile.vc
@@ -22,9 +22,10 @@ DIALOGS_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\dialogs.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 DIALOGS_OBJECTS =  \
 	$(OBJS)\dialogs_dialogs.obj \
 	$(____GENERIC_DIALOGS_IN_NATIVE_BUILDS_FILENAMES_OBJECTS) \
@@ -209,6 +210,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -293,5 +300,5 @@ $(OBJS)\dialogs_fontdlgg.obj: .\..\..\src\generic\fontdlgg.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DIALOGS_CXXFLAGS) $**
 
 $(OBJS)\dialogs_dialogs.res: .\dialogs.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/dialogs/makefile.wat b/samples/dialogs/makefile.wat
index 18e03a1e75..20f0c6ae4e 100644
--- a/samples/dialogs/makefile.wat
+++ b/samples/dialogs/makefile.wat
@@ -280,5 +280,5 @@ $(OBJS)\dialogs_fontdlgg.obj :  .AUTODEPEND .\..\..\src\generic\fontdlgg.cpp
 	$(CXX) -zq -fo=$^@ $(DIALOGS_CXXFLAGS) $<
 
 $(OBJS)\dialogs_dialogs.res :  .AUTODEPEND .\dialogs.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/dialup/Makefile.in b/samples/dialup/Makefile.in
index dfd8146457..58593f2a3c 100644
--- a/samples/dialup/Makefile.in
+++ b/samples/dialup/Makefile.in
@@ -176,7 +176,7 @@ nettest_nettest.o: $(srcdir)/nettest.cpp
 	$(CXXC) -c -o $@ $(NETTEST_CXXFLAGS) $(srcdir)/nettest.cpp
 
 nettest_nettest_rc.o: $(srcdir)/nettest.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/dialup/makefile.bcc b/samples/dialup/makefile.bcc
index b24d82cd56..3ce70275a0 100644
--- a/samples/dialup/makefile.bcc
+++ b/samples/dialup/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 NETTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 NETTEST_OBJECTS =  \
 	$(OBJS)\nettest_nettest.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\nettest_nettest.obj: .\nettest.cpp
 	$(CXX) -q -c -P -o$@ $(NETTEST_CXXFLAGS) $**
 
 $(OBJS)\nettest_nettest.res: .\nettest.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/dialup/makefile.gcc b/samples/dialup/makefile.gcc
index 1792da19ac..8277a50b63 100644
--- a/samples/dialup/makefile.gcc
+++ b/samples/dialup/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 NETTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 NETTEST_OBJECTS =  \
 	$(OBJS)\nettest_nettest.o \
 	$(OBJS)\nettest_nettest_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\nettest_nettest.o: ./nettest.cpp
 	$(CXX) -c -o $@ $(NETTEST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\nettest_nettest_rc.o: ./nettest.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/dialup/makefile.vc b/samples/dialup/makefile.vc
index 65dc62a2c0..59b9b7063a 100644
--- a/samples/dialup/makefile.vc
+++ b/samples/dialup/makefile.vc
@@ -22,9 +22,10 @@ NETTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\nettest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 NETTEST_OBJECTS =  \
 	$(OBJS)\nettest_nettest.obj \
 	$(OBJS)\nettest_nettest.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\nettest_nettest.obj: .\nettest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(NETTEST_CXXFLAGS) $**
 
 $(OBJS)\nettest_nettest.res: .\nettest.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/dialup/makefile.wat b/samples/dialup/makefile.wat
index 8a3d9e04b1..ee4c12d20d 100644
--- a/samples/dialup/makefile.wat
+++ b/samples/dialup/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\nettest_nettest.obj :  .AUTODEPEND .\nettest.cpp
 	$(CXX) -zq -fo=$^@ $(NETTEST_CXXFLAGS) $<
 
 $(OBJS)\nettest_nettest.res :  .AUTODEPEND .\nettest.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/display/Makefile.in b/samples/display/Makefile.in
index dbd2fba985..0d09291cdb 100644
--- a/samples/display/Makefile.in
+++ b/samples/display/Makefile.in
@@ -173,7 +173,7 @@ display.app/Contents/PkgInfo: display$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info
 @COND_PLATFORM_MACOSX_1@display_bundle: $(____display_BUNDLE_TGT_REF_DEP)
 
 display_sample_rc.o: $(srcdir)/../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 display_display.o: $(srcdir)/display.cpp
 	$(CXXC) -c -o $@ $(DISPLAY_CXXFLAGS) $(srcdir)/display.cpp
diff --git a/samples/display/makefile.bcc b/samples/display/makefile.bcc
index d7a2221a0a..be075186e1 100644
--- a/samples/display/makefile.bcc
+++ b/samples/display/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 DISPLAY_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 DISPLAY_OBJECTS =  \
 	$(OBJS)\display_display.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -211,7 +218,7 @@ $(OBJS)\display.exe: $(DISPLAY_OBJECTS)  $(OBJS)\display_sample.res
 |
 
 $(OBJS)\display_sample.res: .\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
 
 $(OBJS)\display_display.obj: .\display.cpp
 	$(CXX) -q -c -P -o$@ $(DISPLAY_CXXFLAGS) $**
diff --git a/samples/display/makefile.gcc b/samples/display/makefile.gcc
index 45f4c415aa..09466cca37 100644
--- a/samples/display/makefile.gcc
+++ b/samples/display/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 DISPLAY_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 DISPLAY_OBJECTS =  \
 	$(OBJS)\display_sample_rc.o \
 	$(OBJS)\display_display.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -204,7 +211,7 @@ $(OBJS)\display.exe: $(DISPLAY_OBJECTS) $(OBJS)\display_sample_rc.o
 	$(CXX) -o $@ $(DISPLAY_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\display_sample_rc.o: ./../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
 
 $(OBJS)\display_display.o: ./display.cpp
 	$(CXX) -c -o $@ $(DISPLAY_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/display/makefile.vc b/samples/display/makefile.vc
index a6a37abaf6..f9e304b41e 100644
--- a/samples/display/makefile.vc
+++ b/samples/display/makefile.vc
@@ -22,9 +22,10 @@ DISPLAY_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\display.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 DISPLAY_OBJECTS =  \
 	$(OBJS)\display_sample.res \
 	$(OBJS)\display_display.obj
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -262,7 +269,7 @@ $(OBJS)\display.exe: $(DISPLAY_OBJECTS) $(OBJS)\display_sample.res
 <<
 
 $(OBJS)\display_sample.res: .\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
 
 $(OBJS)\display_display.obj: .\display.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DISPLAY_CXXFLAGS) $**
diff --git a/samples/display/makefile.wat b/samples/display/makefile.wat
index 8c8793618b..141d6ded3d 100644
--- a/samples/display/makefile.wat
+++ b/samples/display/makefile.wat
@@ -245,7 +245,7 @@ $(OBJS)\display.exe :  $(DISPLAY_OBJECTS) $(OBJS)\display_sample.res
 	wlink @$(OBJS)\display.lbc
 
 $(OBJS)\display_sample.res :  .AUTODEPEND .\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
 
 $(OBJS)\display_display.obj :  .AUTODEPEND .\display.cpp
 	$(CXX) -zq -fo=$^@ $(DISPLAY_CXXFLAGS) $<
diff --git a/samples/dnd/Makefile.in b/samples/dnd/Makefile.in
index e6a01cdf74..5eeb32f4a7 100644
--- a/samples/dnd/Makefile.in
+++ b/samples/dnd/Makefile.in
@@ -185,7 +185,7 @@ dnd_dnd.o: $(srcdir)/dnd.cpp
 	$(CXXC) -c -o $@ $(DND_CXXFLAGS) $(srcdir)/dnd.cpp
 
 dnd_dnd_rc.o: $(srcdir)/dnd.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/dnd/makefile.bcc b/samples/dnd/makefile.bcc
index ce18673458..64bf65f0db 100644
--- a/samples/dnd/makefile.bcc
+++ b/samples/dnd/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 DND_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 DND_OBJECTS =  \
 	$(OBJS)\dnd_dnd.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\dnd_dnd.obj: .\dnd.cpp
 	$(CXX) -q -c -P -o$@ $(DND_CXXFLAGS) $**
 
 $(OBJS)\dnd_dnd.res: .\dnd.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/dnd/makefile.gcc b/samples/dnd/makefile.gcc
index 9f5f301efe..94df84d9c0 100644
--- a/samples/dnd/makefile.gcc
+++ b/samples/dnd/makefile.gcc
@@ -22,8 +22,8 @@ SETUPHDIR = \
 DND_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
 	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 DND_OBJECTS =  \
 	$(OBJS)\dnd_dnd.o \
@@ -133,6 +133,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +217,7 @@ $(OBJS)\dnd_dnd.o: ./dnd.cpp
 	$(CXX) -c -o $@ $(DND_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\dnd_dnd_rc.o: ./dnd.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/dnd/makefile.vc b/samples/dnd/makefile.vc
index 254bb6916f..0254a51c45 100644
--- a/samples/dnd/makefile.vc
+++ b/samples/dnd/makefile.vc
@@ -22,9 +22,10 @@ DND_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\dnd.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 DND_OBJECTS =  \
 	$(OBJS)\dnd_dnd.obj \
 	$(OBJS)\dnd_dnd.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\dnd_dnd.obj: .\dnd.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DND_CXXFLAGS) $**
 
 $(OBJS)\dnd_dnd.res: .\dnd.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/dnd/makefile.wat b/samples/dnd/makefile.wat
index bfcda480ec..598e23b87e 100644
--- a/samples/dnd/makefile.wat
+++ b/samples/dnd/makefile.wat
@@ -252,5 +252,5 @@ $(OBJS)\dnd_dnd.obj :  .AUTODEPEND .\dnd.cpp
 	$(CXX) -zq -fo=$^@ $(DND_CXXFLAGS) $<
 
 $(OBJS)\dnd_dnd.res :  .AUTODEPEND .\dnd.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/docview/Makefile.in b/samples/docview/Makefile.in
index 4e9dd856a6..4d6f514528 100644
--- a/samples/docview/Makefile.in
+++ b/samples/docview/Makefile.in
@@ -183,7 +183,7 @@ docview_view.o: $(srcdir)/view.cpp
 	$(CXXC) -c -o $@ $(DOCVIEW_CXXFLAGS) $(srcdir)/view.cpp
 
 docview_docview_rc.o: $(srcdir)/docview.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/docview/makefile.bcc b/samples/docview/makefile.bcc
index d3d838d595..233be2afce 100644
--- a/samples/docview/makefile.bcc
+++ b/samples/docview/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 DOCVIEW_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 DOCVIEW_OBJECTS =  \
 	$(OBJS)\docview_docview.obj \
 	$(OBJS)\docview_doc.obj \
@@ -144,6 +145,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -222,5 +229,5 @@ $(OBJS)\docview_view.obj: .\view.cpp
 	$(CXX) -q -c -P -o$@ $(DOCVIEW_CXXFLAGS) $**
 
 $(OBJS)\docview_docview.res: .\docview.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/docview/makefile.gcc b/samples/docview/makefile.gcc
index b72503e840..7bc84cc2bd 100644
--- a/samples/docview/makefile.gcc
+++ b/samples/docview/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 DOCVIEW_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 DOCVIEW_OBJECTS =  \
 	$(OBJS)\docview_docview.o \
 	$(OBJS)\docview_doc.o \
@@ -135,6 +136,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -215,7 +222,7 @@ $(OBJS)\docview_view.o: ./view.cpp
 	$(CXX) -c -o $@ $(DOCVIEW_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\docview_docview_rc.o: ./docview.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/docview/makefile.vc b/samples/docview/makefile.vc
index 5b51477074..0c5293019c 100644
--- a/samples/docview/makefile.vc
+++ b/samples/docview/makefile.vc
@@ -22,9 +22,10 @@ DOCVIEW_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\docview.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 DOCVIEW_OBJECTS =  \
 	$(OBJS)\docview_docview.obj \
 	$(OBJS)\docview_doc.obj \
@@ -210,6 +211,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -273,5 +280,5 @@ $(OBJS)\docview_view.obj: .\view.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DOCVIEW_CXXFLAGS) $**
 
 $(OBJS)\docview_docview.res: .\docview.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/docview/makefile.wat b/samples/docview/makefile.wat
index 4c8ec77c5c..2c67eea43f 100644
--- a/samples/docview/makefile.wat
+++ b/samples/docview/makefile.wat
@@ -256,5 +256,5 @@ $(OBJS)\docview_view.obj :  .AUTODEPEND .\view.cpp
 	$(CXX) -zq -fo=$^@ $(DOCVIEW_CXXFLAGS) $<
 
 $(OBJS)\docview_docview.res :  .AUTODEPEND .\docview.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/docvwmdi/Makefile.in b/samples/docvwmdi/Makefile.in
index 09d823ea4f..1cff2a1b22 100644
--- a/samples/docvwmdi/Makefile.in
+++ b/samples/docvwmdi/Makefile.in
@@ -184,7 +184,7 @@ docview_view.o: $(srcdir)/view.cpp
 	$(CXXC) -c -o $@ $(DOCVIEW_CXXFLAGS) $(srcdir)/view.cpp
 
 docview_docview_rc.o: $(srcdir)/docview.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/docvwmdi/makefile.bcc b/samples/docvwmdi/makefile.bcc
index d3d838d595..233be2afce 100644
--- a/samples/docvwmdi/makefile.bcc
+++ b/samples/docvwmdi/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 DOCVIEW_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 DOCVIEW_OBJECTS =  \
 	$(OBJS)\docview_docview.obj \
 	$(OBJS)\docview_doc.obj \
@@ -144,6 +145,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -222,5 +229,5 @@ $(OBJS)\docview_view.obj: .\view.cpp
 	$(CXX) -q -c -P -o$@ $(DOCVIEW_CXXFLAGS) $**
 
 $(OBJS)\docview_docview.res: .\docview.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/docvwmdi/makefile.gcc b/samples/docvwmdi/makefile.gcc
index b72503e840..7bc84cc2bd 100644
--- a/samples/docvwmdi/makefile.gcc
+++ b/samples/docvwmdi/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 DOCVIEW_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 DOCVIEW_OBJECTS =  \
 	$(OBJS)\docview_docview.o \
 	$(OBJS)\docview_doc.o \
@@ -135,6 +136,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -215,7 +222,7 @@ $(OBJS)\docview_view.o: ./view.cpp
 	$(CXX) -c -o $@ $(DOCVIEW_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\docview_docview_rc.o: ./docview.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/docvwmdi/makefile.vc b/samples/docvwmdi/makefile.vc
index 5b51477074..0c5293019c 100644
--- a/samples/docvwmdi/makefile.vc
+++ b/samples/docvwmdi/makefile.vc
@@ -22,9 +22,10 @@ DOCVIEW_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\docview.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 DOCVIEW_OBJECTS =  \
 	$(OBJS)\docview_docview.obj \
 	$(OBJS)\docview_doc.obj \
@@ -210,6 +211,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -273,5 +280,5 @@ $(OBJS)\docview_view.obj: .\view.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DOCVIEW_CXXFLAGS) $**
 
 $(OBJS)\docview_docview.res: .\docview.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/docvwmdi/makefile.wat b/samples/docvwmdi/makefile.wat
index 4c8ec77c5c..2c67eea43f 100644
--- a/samples/docvwmdi/makefile.wat
+++ b/samples/docvwmdi/makefile.wat
@@ -256,5 +256,5 @@ $(OBJS)\docview_view.obj :  .AUTODEPEND .\view.cpp
 	$(CXX) -zq -fo=$^@ $(DOCVIEW_CXXFLAGS) $<
 
 $(OBJS)\docview_docview.res :  .AUTODEPEND .\docview.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/dragimag/Makefile.in b/samples/dragimag/Makefile.in
index ab7600f404..6c83e2f0a8 100644
--- a/samples/dragimag/Makefile.in
+++ b/samples/dragimag/Makefile.in
@@ -188,7 +188,7 @@ dragimag_dragimag.o: $(srcdir)/dragimag.cpp
 	$(CXXC) -c -o $@ $(DRAGIMAG_CXXFLAGS) $(srcdir)/dragimag.cpp
 
 dragimag_dragimag_rc.o: $(srcdir)/dragimag.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/dragimag/makefile.bcc b/samples/dragimag/makefile.bcc
index 8cfa807d84..3ff8dfd176 100644
--- a/samples/dragimag/makefile.bcc
+++ b/samples/dragimag/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 DRAGIMAG_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 DRAGIMAG_OBJECTS =  \
 	$(OBJS)\dragimag_dragimag.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\dragimag_dragimag.obj: .\dragimag.cpp
 	$(CXX) -q -c -P -o$@ $(DRAGIMAG_CXXFLAGS) $**
 
 $(OBJS)\dragimag_dragimag.res: .\dragimag.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/dragimag/makefile.gcc b/samples/dragimag/makefile.gcc
index 470f3c220a..9ba40dbdc5 100644
--- a/samples/dragimag/makefile.gcc
+++ b/samples/dragimag/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 DRAGIMAG_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 DRAGIMAG_OBJECTS =  \
 	$(OBJS)\dragimag_dragimag.o \
 	$(OBJS)\dragimag_dragimag_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +218,7 @@ $(OBJS)\dragimag_dragimag.o: ./dragimag.cpp
 	$(CXX) -c -o $@ $(DRAGIMAG_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\dragimag_dragimag_rc.o: ./dragimag.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/dragimag/makefile.vc b/samples/dragimag/makefile.vc
index b1b9313134..141f0d4601 100644
--- a/samples/dragimag/makefile.vc
+++ b/samples/dragimag/makefile.vc
@@ -22,9 +22,10 @@ DRAGIMAG_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\dragimag.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 DRAGIMAG_OBJECTS =  \
 	$(OBJS)\dragimag_dragimag.obj \
 	$(OBJS)\dragimag_dragimag.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\dragimag_dragimag.obj: .\dragimag.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DRAGIMAG_CXXFLAGS) $**
 
 $(OBJS)\dragimag_dragimag.res: .\dragimag.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/dragimag/makefile.wat b/samples/dragimag/makefile.wat
index 11e81874f2..e0110053d8 100644
--- a/samples/dragimag/makefile.wat
+++ b/samples/dragimag/makefile.wat
@@ -252,5 +252,5 @@ $(OBJS)\dragimag_dragimag.obj :  .AUTODEPEND .\dragimag.cpp
 	$(CXX) -zq -fo=$^@ $(DRAGIMAG_CXXFLAGS) $<
 
 $(OBJS)\dragimag_dragimag.res :  .AUTODEPEND .\dragimag.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/drawing/Makefile.in b/samples/drawing/Makefile.in
index e6bccff0f8..4df53970bb 100644
--- a/samples/drawing/Makefile.in
+++ b/samples/drawing/Makefile.in
@@ -188,7 +188,7 @@ drawing_drawing.o: $(srcdir)/drawing.cpp
 	$(CXXC) -c -o $@ $(DRAWING_CXXFLAGS) $(srcdir)/drawing.cpp
 
 drawing_drawing_rc.o: $(srcdir)/drawing.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/drawing/makefile.bcc b/samples/drawing/makefile.bcc
index 49835f049f..1d906ea8c5 100644
--- a/samples/drawing/makefile.bcc
+++ b/samples/drawing/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 DRAWING_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 DRAWING_OBJECTS =  \
 	$(OBJS)\drawing_drawing.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\drawing_drawing.obj: .\drawing.cpp
 	$(CXX) -q -c -P -o$@ $(DRAWING_CXXFLAGS) $**
 
 $(OBJS)\drawing_drawing.res: .\drawing.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/drawing/makefile.gcc b/samples/drawing/makefile.gcc
index 5a7b67d282..3eb423c24c 100644
--- a/samples/drawing/makefile.gcc
+++ b/samples/drawing/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 DRAWING_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 DRAWING_OBJECTS =  \
 	$(OBJS)\drawing_drawing.o \
 	$(OBJS)\drawing_drawing_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +218,7 @@ $(OBJS)\drawing_drawing.o: ./drawing.cpp
 	$(CXX) -c -o $@ $(DRAWING_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\drawing_drawing_rc.o: ./drawing.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/drawing/makefile.vc b/samples/drawing/makefile.vc
index b535c9157a..cbf14dfb0d 100644
--- a/samples/drawing/makefile.vc
+++ b/samples/drawing/makefile.vc
@@ -22,9 +22,10 @@ DRAWING_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\drawing.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 DRAWING_OBJECTS =  \
 	$(OBJS)\drawing_drawing.obj \
 	$(OBJS)\drawing_drawing.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\drawing_drawing.obj: .\drawing.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DRAWING_CXXFLAGS) $**
 
 $(OBJS)\drawing_drawing.res: .\drawing.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/drawing/makefile.wat b/samples/drawing/makefile.wat
index cbe661aeb9..49750b4210 100644
--- a/samples/drawing/makefile.wat
+++ b/samples/drawing/makefile.wat
@@ -252,5 +252,5 @@ $(OBJS)\drawing_drawing.obj :  .AUTODEPEND .\drawing.cpp
 	$(CXX) -zq -fo=$^@ $(DRAWING_CXXFLAGS) $<
 
 $(OBJS)\drawing_drawing.res :  .AUTODEPEND .\drawing.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/dynamic/Makefile.in b/samples/dynamic/Makefile.in
index d888d9de4d..1a6f3cf18c 100644
--- a/samples/dynamic/Makefile.in
+++ b/samples/dynamic/Makefile.in
@@ -176,7 +176,7 @@ dynamic_dynamic.o: $(srcdir)/dynamic.cpp
 	$(CXXC) -c -o $@ $(DYNAMIC_CXXFLAGS) $(srcdir)/dynamic.cpp
 
 dynamic_dynamic_rc.o: $(srcdir)/dynamic.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/dynamic/makefile.bcc b/samples/dynamic/makefile.bcc
index 0137dfa726..a2a9c3290c 100644
--- a/samples/dynamic/makefile.bcc
+++ b/samples/dynamic/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 DYNAMIC_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 DYNAMIC_OBJECTS =  \
 	$(OBJS)\dynamic_dynamic.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\dynamic_dynamic.obj: .\dynamic.cpp
 	$(CXX) -q -c -P -o$@ $(DYNAMIC_CXXFLAGS) $**
 
 $(OBJS)\dynamic_dynamic.res: .\dynamic.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/dynamic/makefile.gcc b/samples/dynamic/makefile.gcc
index 155547a0a4..87f86c3b78 100644
--- a/samples/dynamic/makefile.gcc
+++ b/samples/dynamic/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 DYNAMIC_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 DYNAMIC_OBJECTS =  \
 	$(OBJS)\dynamic_dynamic.o \
 	$(OBJS)\dynamic_dynamic_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\dynamic_dynamic.o: ./dynamic.cpp
 	$(CXX) -c -o $@ $(DYNAMIC_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\dynamic_dynamic_rc.o: ./dynamic.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/dynamic/makefile.vc b/samples/dynamic/makefile.vc
index e63fc068c3..1378cd2eee 100644
--- a/samples/dynamic/makefile.vc
+++ b/samples/dynamic/makefile.vc
@@ -22,9 +22,10 @@ DYNAMIC_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\dynamic.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 DYNAMIC_OBJECTS =  \
 	$(OBJS)\dynamic_dynamic.obj \
 	$(OBJS)\dynamic_dynamic.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\dynamic_dynamic.obj: .\dynamic.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(DYNAMIC_CXXFLAGS) $**
 
 $(OBJS)\dynamic_dynamic.res: .\dynamic.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/dynamic/makefile.wat b/samples/dynamic/makefile.wat
index 4be2e072a2..d9a9fffb21 100644
--- a/samples/dynamic/makefile.wat
+++ b/samples/dynamic/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\dynamic_dynamic.obj :  .AUTODEPEND .\dynamic.cpp
 	$(CXX) -zq -fo=$^@ $(DYNAMIC_CXXFLAGS) $<
 
 $(OBJS)\dynamic_dynamic.res :  .AUTODEPEND .\dynamic.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/erase/Makefile.in b/samples/erase/Makefile.in
index 947c4f7be5..5fc7ec64bd 100644
--- a/samples/erase/Makefile.in
+++ b/samples/erase/Makefile.in
@@ -175,7 +175,7 @@ erase_erase.o: $(srcdir)/erase.cpp
 	$(CXXC) -c -o $@ $(ERASE_CXXFLAGS) $(srcdir)/erase.cpp
 
 erase_erase_rc.o: $(srcdir)/erase.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/erase/makefile.bcc b/samples/erase/makefile.bcc
index 1df1ae3458..ad8c36f9e1 100644
--- a/samples/erase/makefile.bcc
+++ b/samples/erase/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 ERASE_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 ERASE_OBJECTS =  \
 	$(OBJS)\erase_erase.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\erase_erase.obj: .\erase.cpp
 	$(CXX) -q -c -P -o$@ $(ERASE_CXXFLAGS) $**
 
 $(OBJS)\erase_erase.res: .\erase.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/erase/makefile.gcc b/samples/erase/makefile.gcc
index cc1dd4b391..660b8c38fb 100644
--- a/samples/erase/makefile.gcc
+++ b/samples/erase/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 ERASE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 ERASE_OBJECTS =  \
 	$(OBJS)\erase_erase.o \
 	$(OBJS)\erase_erase_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\erase_erase.o: ./erase.cpp
 	$(CXX) -c -o $@ $(ERASE_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\erase_erase_rc.o: ./erase.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/erase/makefile.vc b/samples/erase/makefile.vc
index 19ba6f8c83..57359f30d8 100644
--- a/samples/erase/makefile.vc
+++ b/samples/erase/makefile.vc
@@ -22,9 +22,10 @@ ERASE_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\erase.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 ERASE_OBJECTS =  \
 	$(OBJS)\erase_erase.obj \
 	$(OBJS)\erase_erase.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\erase_erase.obj: .\erase.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(ERASE_CXXFLAGS) $**
 
 $(OBJS)\erase_erase.res: .\erase.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/erase/makefile.wat b/samples/erase/makefile.wat
index 46fa917d8e..08c6fb0cd4 100644
--- a/samples/erase/makefile.wat
+++ b/samples/erase/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\erase_erase.obj :  .AUTODEPEND .\erase.cpp
 	$(CXX) -zq -fo=$^@ $(ERASE_CXXFLAGS) $<
 
 $(OBJS)\erase_erase.res :  .AUTODEPEND .\erase.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/event/Makefile.in b/samples/event/Makefile.in
index 6cb918af9e..27bea948a6 100644
--- a/samples/event/Makefile.in
+++ b/samples/event/Makefile.in
@@ -175,7 +175,7 @@ event_event.o: $(srcdir)/event.cpp
 	$(CXXC) -c -o $@ $(EVENT_CXXFLAGS) $(srcdir)/event.cpp
 
 event_event_rc.o: $(srcdir)/event.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/event/makefile.bcc b/samples/event/makefile.bcc
index f86657f1eb..12cf970a7e 100644
--- a/samples/event/makefile.bcc
+++ b/samples/event/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 EVENT_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 EVENT_OBJECTS =  \
 	$(OBJS)\event_event.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\event_event.obj: .\event.cpp
 	$(CXX) -q -c -P -o$@ $(EVENT_CXXFLAGS) $**
 
 $(OBJS)\event_event.res: .\event.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/event/makefile.gcc b/samples/event/makefile.gcc
index 7129fdaa56..f55d1b4762 100644
--- a/samples/event/makefile.gcc
+++ b/samples/event/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 EVENT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 EVENT_OBJECTS =  \
 	$(OBJS)\event_event.o \
 	$(OBJS)\event_event_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\event_event.o: ./event.cpp
 	$(CXX) -c -o $@ $(EVENT_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\event_event_rc.o: ./event.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/event/makefile.vc b/samples/event/makefile.vc
index ad109385fa..d37a67294a 100644
--- a/samples/event/makefile.vc
+++ b/samples/event/makefile.vc
@@ -22,9 +22,10 @@ EVENT_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\event.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 EVENT_OBJECTS =  \
 	$(OBJS)\event_event.obj \
 	$(OBJS)\event_event.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\event_event.obj: .\event.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(EVENT_CXXFLAGS) $**
 
 $(OBJS)\event_event.res: .\event.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/event/makefile.wat b/samples/event/makefile.wat
index d9044406bc..2e55448da1 100644
--- a/samples/event/makefile.wat
+++ b/samples/event/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\event_event.obj :  .AUTODEPEND .\event.cpp
 	$(CXX) -zq -fo=$^@ $(EVENT_CXXFLAGS) $<
 
 $(OBJS)\event_event.res :  .AUTODEPEND .\event.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/except/Makefile.in b/samples/except/Makefile.in
index 157af796ff..52eeef8343 100644
--- a/samples/except/Makefile.in
+++ b/samples/except/Makefile.in
@@ -173,7 +173,7 @@ except.app/Contents/PkgInfo: except$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info.p
 @COND_PLATFORM_MACOSX_1@except_bundle: $(____except_BUNDLE_TGT_REF_DEP)
 
 except_sample_rc.o: $(srcdir)/../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 except_except.o: $(srcdir)/except.cpp
 	$(CXXC) -c -o $@ $(EXCEPT_CXXFLAGS) $(srcdir)/except.cpp
diff --git a/samples/except/makefile.bcc b/samples/except/makefile.bcc
index 0e5c1c8e7b..ee23931651 100644
--- a/samples/except/makefile.bcc
+++ b/samples/except/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 EXCEPT_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 EXCEPT_OBJECTS =  \
 	$(OBJS)\except_except.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -211,7 +218,7 @@ $(OBJS)\except.exe: $(EXCEPT_OBJECTS)  $(OBJS)\except_sample.res
 |
 
 $(OBJS)\except_sample.res: .\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
 
 $(OBJS)\except_except.obj: .\except.cpp
 	$(CXX) -q -c -P -o$@ $(EXCEPT_CXXFLAGS) $**
diff --git a/samples/except/makefile.gcc b/samples/except/makefile.gcc
index 81e17019f2..93c1c420cf 100644
--- a/samples/except/makefile.gcc
+++ b/samples/except/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 EXCEPT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 EXCEPT_OBJECTS =  \
 	$(OBJS)\except_sample_rc.o \
 	$(OBJS)\except_except.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -204,7 +211,7 @@ $(OBJS)\except.exe: $(EXCEPT_OBJECTS) $(OBJS)\except_sample_rc.o
 	$(CXX) -o $@ $(EXCEPT_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\except_sample_rc.o: ./../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
 
 $(OBJS)\except_except.o: ./except.cpp
 	$(CXX) -c -o $@ $(EXCEPT_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/except/makefile.vc b/samples/except/makefile.vc
index 4f2253d9a3..3f18f44017 100644
--- a/samples/except/makefile.vc
+++ b/samples/except/makefile.vc
@@ -22,9 +22,10 @@ EXCEPT_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\except.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 EXCEPT_OBJECTS =  \
 	$(OBJS)\except_sample.res \
 	$(OBJS)\except_except.obj
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -262,7 +269,7 @@ $(OBJS)\except.exe: $(EXCEPT_OBJECTS) $(OBJS)\except_sample.res
 <<
 
 $(OBJS)\except_sample.res: .\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
 
 $(OBJS)\except_except.obj: .\except.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(EXCEPT_CXXFLAGS) $**
diff --git a/samples/except/makefile.wat b/samples/except/makefile.wat
index ea12ae42d1..9125fd1ee7 100644
--- a/samples/except/makefile.wat
+++ b/samples/except/makefile.wat
@@ -245,7 +245,7 @@ $(OBJS)\except.exe :  $(EXCEPT_OBJECTS) $(OBJS)\except_sample.res
 	wlink @$(OBJS)\except.lbc
 
 $(OBJS)\except_sample.res :  .AUTODEPEND .\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
 
 $(OBJS)\except_except.obj :  .AUTODEPEND .\except.cpp
 	$(CXX) -zq -fo=$^@ $(EXCEPT_CXXFLAGS) $<
diff --git a/samples/exec/Makefile.in b/samples/exec/Makefile.in
index 5b67650664..d0b0edaae0 100644
--- a/samples/exec/Makefile.in
+++ b/samples/exec/Makefile.in
@@ -174,7 +174,7 @@ exec_exec.o: $(srcdir)/exec.cpp
 	$(CXXC) -c -o $@ $(EXEC_CXXFLAGS) $(srcdir)/exec.cpp
 
 exec_exec_rc.o: $(srcdir)/exec.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/exec/makefile.bcc b/samples/exec/makefile.bcc
index b40c7aecad..1ececa7290 100644
--- a/samples/exec/makefile.bcc
+++ b/samples/exec/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 EXEC_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 EXEC_OBJECTS =  \
 	$(OBJS)\exec_exec.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\exec_exec.obj: .\exec.cpp
 	$(CXX) -q -c -P -o$@ $(EXEC_CXXFLAGS) $**
 
 $(OBJS)\exec_exec.res: .\exec.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/exec/makefile.gcc b/samples/exec/makefile.gcc
index c0496d299e..69f902184c 100644
--- a/samples/exec/makefile.gcc
+++ b/samples/exec/makefile.gcc
@@ -22,8 +22,8 @@ SETUPHDIR = \
 EXEC_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
 	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 EXEC_OBJECTS =  \
 	$(OBJS)\exec_exec.o \
@@ -133,6 +133,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +213,7 @@ $(OBJS)\exec_exec.o: ./exec.cpp
 	$(CXX) -c -o $@ $(EXEC_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\exec_exec_rc.o: ./exec.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/exec/makefile.vc b/samples/exec/makefile.vc
index dec8785fe8..7a956bee41 100644
--- a/samples/exec/makefile.vc
+++ b/samples/exec/makefile.vc
@@ -22,9 +22,10 @@ EXEC_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\exec.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 EXEC_OBJECTS =  \
 	$(OBJS)\exec_exec.obj \
 	$(OBJS)\exec_exec.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\exec_exec.obj: .\exec.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(EXEC_CXXFLAGS) $**
 
 $(OBJS)\exec_exec.res: .\exec.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/exec/makefile.wat b/samples/exec/makefile.wat
index 7daaa2407c..7bddc952cf 100644
--- a/samples/exec/makefile.wat
+++ b/samples/exec/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\exec_exec.obj :  .AUTODEPEND .\exec.cpp
 	$(CXX) -zq -fo=$^@ $(EXEC_CXXFLAGS) $<
 
 $(OBJS)\exec_exec.res :  .AUTODEPEND .\exec.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/font/Makefile.in b/samples/font/Makefile.in
index 3e4190e2b9..d7788a1de4 100644
--- a/samples/font/Makefile.in
+++ b/samples/font/Makefile.in
@@ -174,7 +174,7 @@ font_font.o: $(srcdir)/font.cpp
 	$(CXXC) -c -o $@ $(FONT_CXXFLAGS) $(srcdir)/font.cpp
 
 font_font_rc.o: $(srcdir)/font.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/font/makefile.bcc b/samples/font/makefile.bcc
index 4874c0c835..3591682b70 100644
--- a/samples/font/makefile.bcc
+++ b/samples/font/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 FONT_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 FONT_OBJECTS =  \
 	$(OBJS)\font_font.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\font_font.obj: .\font.cpp
 	$(CXX) -q -c -P -o$@ $(FONT_CXXFLAGS) $**
 
 $(OBJS)\font_font.res: .\font.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/font/makefile.gcc b/samples/font/makefile.gcc
index aee228adb4..db13cf2227 100644
--- a/samples/font/makefile.gcc
+++ b/samples/font/makefile.gcc
@@ -22,8 +22,8 @@ SETUPHDIR = \
 FONT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
 	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 FONT_OBJECTS =  \
 	$(OBJS)\font_font.o \
@@ -133,6 +133,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +213,7 @@ $(OBJS)\font_font.o: ./font.cpp
 	$(CXX) -c -o $@ $(FONT_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\font_font_rc.o: ./font.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/font/makefile.vc b/samples/font/makefile.vc
index 77352132b5..e70e310904 100644
--- a/samples/font/makefile.vc
+++ b/samples/font/makefile.vc
@@ -22,9 +22,10 @@ FONT_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\font.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 FONT_OBJECTS =  \
 	$(OBJS)\font_font.obj \
 	$(OBJS)\font_font.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\font_font.obj: .\font.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(FONT_CXXFLAGS) $**
 
 $(OBJS)\font_font.res: .\font.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/font/makefile.wat b/samples/font/makefile.wat
index 81784a7aee..89f8f90ebc 100644
--- a/samples/font/makefile.wat
+++ b/samples/font/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\font_font.obj :  .AUTODEPEND .\font.cpp
 	$(CXX) -zq -fo=$^@ $(FONT_CXXFLAGS) $<
 
 $(OBJS)\font_font.res :  .AUTODEPEND .\font.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/grid/Makefile.in b/samples/grid/Makefile.in
index 1d6348470d..6f80f24f10 100644
--- a/samples/grid/Makefile.in
+++ b/samples/grid/Makefile.in
@@ -179,7 +179,7 @@ grid_griddemo.o: $(srcdir)/griddemo.cpp
 	$(CXXC) -c -o $@ $(GRID_CXXFLAGS) $(srcdir)/griddemo.cpp
 
 grid_griddemo_rc.o: $(srcdir)/griddemo.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/grid/makefile.bcc b/samples/grid/makefile.bcc
index 5b6a8db081..b97d592ce0 100644
--- a/samples/grid/makefile.bcc
+++ b/samples/grid/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 GRID_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 GRID_OBJECTS =  \
 	$(OBJS)\grid_griddemo.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\grid_griddemo.obj: .\griddemo.cpp
 	$(CXX) -q -c -P -o$@ $(GRID_CXXFLAGS) $**
 
 $(OBJS)\grid_griddemo.res: .\griddemo.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/grid/makefile.gcc b/samples/grid/makefile.gcc
index bd7ef7f95a..4d428cebae 100644
--- a/samples/grid/makefile.gcc
+++ b/samples/grid/makefile.gcc
@@ -22,8 +22,8 @@ SETUPHDIR = \
 GRID_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
 	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 GRID_OBJECTS =  \
 	$(OBJS)\grid_griddemo.o \
@@ -133,6 +133,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +217,7 @@ $(OBJS)\grid_griddemo.o: ./griddemo.cpp
 	$(CXX) -c -o $@ $(GRID_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\grid_griddemo_rc.o: ./griddemo.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/grid/makefile.vc b/samples/grid/makefile.vc
index 0b082bbfec..b4df97ba24 100644
--- a/samples/grid/makefile.vc
+++ b/samples/grid/makefile.vc
@@ -22,9 +22,10 @@ GRID_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\grid.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 GRID_OBJECTS =  \
 	$(OBJS)\grid_griddemo.obj \
 	$(OBJS)\grid_griddemo.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\grid_griddemo.obj: .\griddemo.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(GRID_CXXFLAGS) $**
 
 $(OBJS)\grid_griddemo.res: .\griddemo.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/grid/makefile.wat b/samples/grid/makefile.wat
index 06a8550967..d18ca413f3 100644
--- a/samples/grid/makefile.wat
+++ b/samples/grid/makefile.wat
@@ -253,5 +253,5 @@ $(OBJS)\grid_griddemo.obj :  .AUTODEPEND .\griddemo.cpp
 	$(CXX) -zq -fo=$^@ $(GRID_CXXFLAGS) $<
 
 $(OBJS)\grid_griddemo.res :  .AUTODEPEND .\griddemo.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/help/Makefile.in b/samples/help/Makefile.in
index 270ef6b5ee..2d26560c4f 100644
--- a/samples/help/Makefile.in
+++ b/samples/help/Makefile.in
@@ -202,7 +202,7 @@ help_demo.o: $(srcdir)/demo.cpp
 	$(CXXC) -c -o $@ $(HELP_CXXFLAGS) $(srcdir)/demo.cpp
 
 help_demo_rc.o: $(srcdir)/demo.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/help/makefile.bcc b/samples/help/makefile.bcc
index 59f74fe3e8..001d0bd266 100644
--- a/samples/help/makefile.bcc
+++ b/samples/help/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 HELP_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 HELP_OBJECTS =  \
 	$(OBJS)\help_demo.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -226,5 +233,5 @@ $(OBJS)\help_demo.obj: .\demo.cpp
 	$(CXX) -q -c -P -o$@ $(HELP_CXXFLAGS) $**
 
 $(OBJS)\help_demo.res: .\demo.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/help/makefile.gcc b/samples/help/makefile.gcc
index 0cd0d14d28..b99c2eaa21 100644
--- a/samples/help/makefile.gcc
+++ b/samples/help/makefile.gcc
@@ -22,8 +22,8 @@ SETUPHDIR = \
 HELP_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
 	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 HELP_OBJECTS =  \
 	$(OBJS)\help_demo.o \
@@ -133,6 +133,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -219,7 +225,7 @@ $(OBJS)\help_demo.o: ./demo.cpp
 	$(CXX) -c -o $@ $(HELP_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\help_demo_rc.o: ./demo.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data data_doc
 
diff --git a/samples/help/makefile.vc b/samples/help/makefile.vc
index 9a0569eaf4..8b49d7a232 100644
--- a/samples/help/makefile.vc
+++ b/samples/help/makefile.vc
@@ -22,9 +22,10 @@ HELP_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\help.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 HELP_OBJECTS =  \
 	$(OBJS)\help_demo.obj \
 	$(OBJS)\help_demo.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -277,5 +284,5 @@ $(OBJS)\help_demo.obj: .\demo.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(HELP_CXXFLAGS) $**
 
 $(OBJS)\help_demo.res: .\demo.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/help/makefile.wat b/samples/help/makefile.wat
index b6e2d5fa81..7b454bd332 100644
--- a/samples/help/makefile.wat
+++ b/samples/help/makefile.wat
@@ -261,5 +261,5 @@ $(OBJS)\help_demo.obj :  .AUTODEPEND .\demo.cpp
 	$(CXX) -zq -fo=$^@ $(HELP_CXXFLAGS) $<
 
 $(OBJS)\help_demo.res :  .AUTODEPEND .\demo.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/htlbox/Makefile.in b/samples/htlbox/Makefile.in
index 0f1ca9f076..1b66d342e6 100644
--- a/samples/htlbox/Makefile.in
+++ b/samples/htlbox/Makefile.in
@@ -180,7 +180,7 @@ htlbox_htlbox.o: $(srcdir)/htlbox.cpp
 	$(CXXC) -c -o $@ $(HTLBOX_CXXFLAGS) $(srcdir)/htlbox.cpp
 
 htlbox_htlbox_rc.o: $(srcdir)/htlbox.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/htlbox/makefile.bcc b/samples/htlbox/makefile.bcc
index d8be2d885c..3631fdb77a 100644
--- a/samples/htlbox/makefile.bcc
+++ b/samples/htlbox/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 HTLBOX_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 HTLBOX_OBJECTS =  \
 	$(OBJS)\htlbox_htlbox.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\htlbox_htlbox.obj: .\htlbox.cpp
 	$(CXX) -q -c -P -o$@ $(HTLBOX_CXXFLAGS) $**
 
 $(OBJS)\htlbox_htlbox.res: .\htlbox.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/htlbox/makefile.gcc b/samples/htlbox/makefile.gcc
index 711bae2190..ba6de3c4e5 100644
--- a/samples/htlbox/makefile.gcc
+++ b/samples/htlbox/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 HTLBOX_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 HTLBOX_OBJECTS =  \
 	$(OBJS)\htlbox_htlbox.o \
 	$(OBJS)\htlbox_htlbox_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +218,7 @@ $(OBJS)\htlbox_htlbox.o: ./htlbox.cpp
 	$(CXX) -c -o $@ $(HTLBOX_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\htlbox_htlbox_rc.o: ./htlbox.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/htlbox/makefile.vc b/samples/htlbox/makefile.vc
index 8959426060..04a01b64ba 100644
--- a/samples/htlbox/makefile.vc
+++ b/samples/htlbox/makefile.vc
@@ -22,9 +22,10 @@ HTLBOX_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\htlbox.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 HTLBOX_OBJECTS =  \
 	$(OBJS)\htlbox_htlbox.obj \
 	$(OBJS)\htlbox_htlbox.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\htlbox_htlbox.obj: .\htlbox.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(HTLBOX_CXXFLAGS) $**
 
 $(OBJS)\htlbox_htlbox.res: .\htlbox.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/htlbox/makefile.wat b/samples/htlbox/makefile.wat
index 6ec0eb6b56..bc5e1dec00 100644
--- a/samples/htlbox/makefile.wat
+++ b/samples/htlbox/makefile.wat
@@ -253,5 +253,5 @@ $(OBJS)\htlbox_htlbox.obj :  .AUTODEPEND .\htlbox.cpp
 	$(CXX) -zq -fo=$^@ $(HTLBOX_CXXFLAGS) $<
 
 $(OBJS)\htlbox_htlbox.res :  .AUTODEPEND .\htlbox.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/html/about/Makefile.in b/samples/html/about/Makefile.in
index 55805ed771..bea9964768 100644
--- a/samples/html/about/Makefile.in
+++ b/samples/html/about/Makefile.in
@@ -192,7 +192,7 @@ about_about.o: $(srcdir)/about.cpp
 	$(CXXC) -c -o $@ $(ABOUT_CXXFLAGS) $(srcdir)/about.cpp
 
 about_about_rc.o: $(srcdir)/about.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/html/about/makefile.bcc b/samples/html/about/makefile.bcc
index 4a7d2dec63..b8107cfe85 100644
--- a/samples/html/about/makefile.bcc
+++ b/samples/html/about/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 ABOUT_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 ABOUT_OBJECTS =  \
 	$(OBJS)\about_about.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -223,5 +229,5 @@ $(OBJS)\about_about.obj: .\about.cpp
 	$(CXX) -q -c -P -o$@ $(ABOUT_CXXFLAGS) $**
 
 $(OBJS)\about_about.res: .\about.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
 
diff --git a/samples/html/about/makefile.gcc b/samples/html/about/makefile.gcc
index 7edd9ade17..50918c1843 100644
--- a/samples/html/about/makefile.gcc
+++ b/samples/html/about/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 ABOUT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 ABOUT_OBJECTS =  \
 	$(OBJS)\about_about.o \
 	$(OBJS)\about_about_rc.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -216,7 +222,7 @@ $(OBJS)\about_about.o: ./about.cpp
 	$(CXX) -c -o $@ $(ABOUT_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\about_about_rc.o: ./about.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
 
 .PHONY: all clean data_files
 
diff --git a/samples/html/about/makefile.vc b/samples/html/about/makefile.vc
index ec8024ac47..a3ab3802f0 100644
--- a/samples/html/about/makefile.vc
+++ b/samples/html/about/makefile.vc
@@ -22,9 +22,10 @@ ABOUT_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\about.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 ABOUT_OBJECTS =  \
 	$(OBJS)\about_about.obj \
 	$(OBJS)\about_about.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -273,5 +280,5 @@ $(OBJS)\about_about.obj: .\about.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(ABOUT_CXXFLAGS) $**
 
 $(OBJS)\about_about.res: .\about.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
 
diff --git a/samples/html/about/makefile.wat b/samples/html/about/makefile.wat
index c09b8faccb..16e8d6e175 100644
--- a/samples/html/about/makefile.wat
+++ b/samples/html/about/makefile.wat
@@ -257,5 +257,5 @@ $(OBJS)\about_about.obj :  .AUTODEPEND .\about.cpp
 	$(CXX) -zq -fo=$^@ $(ABOUT_CXXFLAGS) $<
 
 $(OBJS)\about_about.res :  .AUTODEPEND .\about.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
 
diff --git a/samples/html/help/Makefile.in b/samples/html/help/Makefile.in
index 81d7587070..3c5ddba2d6 100644
--- a/samples/html/help/Makefile.in
+++ b/samples/html/help/Makefile.in
@@ -191,7 +191,7 @@ help_help.o: $(srcdir)/help.cpp
 	$(CXXC) -c -o $@ $(HELP_CXXFLAGS) $(srcdir)/help.cpp
 
 help_help_rc.o: $(srcdir)/help.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/html/help/makefile.bcc b/samples/html/help/makefile.bcc
index fdef9b7851..92b4a6123f 100644
--- a/samples/html/help/makefile.bcc
+++ b/samples/html/help/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 HELP_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 HELP_OBJECTS =  \
 	$(OBJS)\help_help.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -223,5 +229,5 @@ $(OBJS)\help_help.obj: .\help.cpp
 	$(CXX) -q -c -P -o$@ $(HELP_CXXFLAGS) $**
 
 $(OBJS)\help_help.res: .\help.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
 
diff --git a/samples/html/help/makefile.gcc b/samples/html/help/makefile.gcc
index 2e4422845f..8d2d70b48c 100644
--- a/samples/html/help/makefile.gcc
+++ b/samples/html/help/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 HELP_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
+	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 HELP_OBJECTS =  \
 	$(OBJS)\help_help.o \
 	$(OBJS)\help_help_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -215,7 +222,7 @@ $(OBJS)\help_help.o: ./help.cpp
 	$(CXX) -c -o $@ $(HELP_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\help_help_rc.o: ./help.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/html/help/makefile.vc b/samples/html/help/makefile.vc
index bdc0d3e356..799c5a4692 100644
--- a/samples/html/help/makefile.vc
+++ b/samples/html/help/makefile.vc
@@ -22,9 +22,10 @@ HELP_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\help.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 HELP_OBJECTS =  \
 	$(OBJS)\help_help.obj \
 	$(OBJS)\help_help.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -273,5 +280,5 @@ $(OBJS)\help_help.obj: .\help.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(HELP_CXXFLAGS) $**
 
 $(OBJS)\help_help.res: .\help.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
 
diff --git a/samples/html/help/makefile.wat b/samples/html/help/makefile.wat
index 6eb38b33aa..dbac0db1f3 100644
--- a/samples/html/help/makefile.wat
+++ b/samples/html/help/makefile.wat
@@ -257,5 +257,5 @@ $(OBJS)\help_help.obj :  .AUTODEPEND .\help.cpp
 	$(CXX) -zq -fo=$^@ $(HELP_CXXFLAGS) $<
 
 $(OBJS)\help_help.res :  .AUTODEPEND .\help.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
 
diff --git a/samples/html/helpview/Makefile.in b/samples/html/helpview/Makefile.in
index 26171c4087..1d031b84eb 100644
--- a/samples/html/helpview/Makefile.in
+++ b/samples/html/helpview/Makefile.in
@@ -193,7 +193,7 @@ helpview_helpview.o: $(srcdir)/helpview.cpp
 	$(CXXC) -c -o $@ $(HELPVIEW_CXXFLAGS) $(srcdir)/helpview.cpp
 
 helpview_helpview_rc.o: $(srcdir)/helpview.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/html/helpview/makefile.bcc b/samples/html/helpview/makefile.bcc
index b6ce750ae3..432b592491 100644
--- a/samples/html/helpview/makefile.bcc
+++ b/samples/html/helpview/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 HELPVIEW_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 HELPVIEW_OBJECTS =  \
 	$(OBJS)\helpview_helpview.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -223,5 +229,5 @@ $(OBJS)\helpview_helpview.obj: .\helpview.cpp
 	$(CXX) -q -c -P -o$@ $(HELPVIEW_CXXFLAGS) $**
 
 $(OBJS)\helpview_helpview.res: .\helpview.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
 
diff --git a/samples/html/helpview/makefile.gcc b/samples/html/helpview/makefile.gcc
index cea05048df..988fb49e0b 100644
--- a/samples/html/helpview/makefile.gcc
+++ b/samples/html/helpview/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 HELPVIEW_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 HELPVIEW_OBJECTS =  \
 	$(OBJS)\helpview_helpview.o \
 	$(OBJS)\helpview_helpview_rc.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -216,7 +222,7 @@ $(OBJS)\helpview_helpview.o: ./helpview.cpp
 	$(CXX) -c -o $@ $(HELPVIEW_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\helpview_helpview_rc.o: ./helpview.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/html/helpview/makefile.vc b/samples/html/helpview/makefile.vc
index 6c87e8e91b..802489cfcb 100644
--- a/samples/html/helpview/makefile.vc
+++ b/samples/html/helpview/makefile.vc
@@ -22,9 +22,10 @@ HELPVIEW_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\helpview.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 HELPVIEW_OBJECTS =  \
 	$(OBJS)\helpview_helpview.obj \
 	$(OBJS)\helpview_helpview.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -273,5 +280,5 @@ $(OBJS)\helpview_helpview.obj: .\helpview.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(HELPVIEW_CXXFLAGS) $**
 
 $(OBJS)\helpview_helpview.res: .\helpview.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
 
diff --git a/samples/html/helpview/makefile.wat b/samples/html/helpview/makefile.wat
index a5b08ca746..817bbfcee8 100644
--- a/samples/html/helpview/makefile.wat
+++ b/samples/html/helpview/makefile.wat
@@ -257,5 +257,5 @@ $(OBJS)\helpview_helpview.obj :  .AUTODEPEND .\helpview.cpp
 	$(CXX) -zq -fo=$^@ $(HELPVIEW_CXXFLAGS) $<
 
 $(OBJS)\helpview_helpview.res :  .AUTODEPEND .\helpview.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
 
diff --git a/samples/html/htmlctrl/Makefile.in b/samples/html/htmlctrl/Makefile.in
index ee8c823a89..47cec99b8f 100644
--- a/samples/html/htmlctrl/Makefile.in
+++ b/samples/html/htmlctrl/Makefile.in
@@ -174,7 +174,7 @@ htmlctrl.app/Contents/PkgInfo: htmlctrl$(EXEEXT) $(top_srcdir)/src/mac/carbon/In
 @COND_PLATFORM_MACOSX_1@htmlctrl_bundle: $(____htmlctrl_BUNDLE_TGT_REF_DEP)
 
 htmlctrl_sample_rc.o: $(srcdir)/../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 htmlctrl_htmlctrl.o: $(srcdir)/htmlctrl.cpp
 	$(CXXC) -c -o $@ $(HTMLCTRL_CXXFLAGS) $(srcdir)/htmlctrl.cpp
diff --git a/samples/html/printing/Makefile.in b/samples/html/printing/Makefile.in
index ec98f2b469..ceb9edd8d5 100644
--- a/samples/html/printing/Makefile.in
+++ b/samples/html/printing/Makefile.in
@@ -193,7 +193,7 @@ printing_printing.o: $(srcdir)/printing.cpp
 	$(CXXC) -c -o $@ $(PRINTING_CXXFLAGS) $(srcdir)/printing.cpp
 
 printing_printing_rc.o: $(srcdir)/printing.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/html/printing/makefile.bcc b/samples/html/printing/makefile.bcc
index 09d1d1e17d..e77ed44571 100644
--- a/samples/html/printing/makefile.bcc
+++ b/samples/html/printing/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 PRINTING_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 PRINTING_OBJECTS =  \
 	$(OBJS)\printing_printing.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -223,5 +229,5 @@ $(OBJS)\printing_printing.obj: .\printing.cpp
 	$(CXX) -q -c -P -o$@ $(PRINTING_CXXFLAGS) $**
 
 $(OBJS)\printing_printing.res: .\printing.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
 
diff --git a/samples/html/printing/makefile.gcc b/samples/html/printing/makefile.gcc
index 4e577cb252..75afb4fee8 100644
--- a/samples/html/printing/makefile.gcc
+++ b/samples/html/printing/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 PRINTING_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 PRINTING_OBJECTS =  \
 	$(OBJS)\printing_printing.o \
 	$(OBJS)\printing_printing_rc.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -216,7 +222,7 @@ $(OBJS)\printing_printing.o: ./printing.cpp
 	$(CXX) -c -o $@ $(PRINTING_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\printing_printing_rc.o: ./printing.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/html/printing/makefile.vc b/samples/html/printing/makefile.vc
index 5916f5d03a..476eb2a9cd 100644
--- a/samples/html/printing/makefile.vc
+++ b/samples/html/printing/makefile.vc
@@ -22,9 +22,10 @@ PRINTING_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\printing.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 PRINTING_OBJECTS =  \
 	$(OBJS)\printing_printing.obj \
 	$(OBJS)\printing_printing.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -273,5 +280,5 @@ $(OBJS)\printing_printing.obj: .\printing.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(PRINTING_CXXFLAGS) $**
 
 $(OBJS)\printing_printing.res: .\printing.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
 
diff --git a/samples/html/printing/makefile.wat b/samples/html/printing/makefile.wat
index fbe4bd4e88..df3d2cf3c8 100644
--- a/samples/html/printing/makefile.wat
+++ b/samples/html/printing/makefile.wat
@@ -257,5 +257,5 @@ $(OBJS)\printing_printing.obj :  .AUTODEPEND .\printing.cpp
 	$(CXX) -zq -fo=$^@ $(PRINTING_CXXFLAGS) $<
 
 $(OBJS)\printing_printing.res :  .AUTODEPEND .\printing.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
 
diff --git a/samples/html/test/Makefile.in b/samples/html/test/Makefile.in
index 584b473094..47d53e721e 100644
--- a/samples/html/test/Makefile.in
+++ b/samples/html/test/Makefile.in
@@ -194,7 +194,7 @@ test_test.o: $(srcdir)/test.cpp
 	$(CXXC) -c -o $@ $(TEST_CXXFLAGS) $(srcdir)/test.cpp
 
 test_test_rc.o: $(srcdir)/test.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/html/test/makefile.bcc b/samples/html/test/makefile.bcc
index 93a6a07ad0..5281572156 100644
--- a/samples/html/test/makefile.bcc
+++ b/samples/html/test/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 TEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 TEST_OBJECTS =  \
 	$(OBJS)\test_test.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -227,5 +233,5 @@ $(OBJS)\test_test.obj: .\test.cpp
 	$(CXX) -q -c -P -o$@ $(TEST_CXXFLAGS) $**
 
 $(OBJS)\test_test.res: .\test.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
 
diff --git a/samples/html/test/makefile.gcc b/samples/html/test/makefile.gcc
index bfc22f6a53..84a8ebc965 100644
--- a/samples/html/test/makefile.gcc
+++ b/samples/html/test/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 TEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
+	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 TEST_OBJECTS =  \
 	$(OBJS)\test_test.o \
 	$(OBJS)\test_test_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -219,7 +226,7 @@ $(OBJS)\test_test.o: ./test.cpp
 	$(CXX) -c -o $@ $(TEST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\test_test_rc.o: ./test.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/html/test/makefile.vc b/samples/html/test/makefile.vc
index 96e8e58f47..1a6c5a074b 100644
--- a/samples/html/test/makefile.vc
+++ b/samples/html/test/makefile.vc
@@ -22,9 +22,10 @@ TEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\test.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 TEST_OBJECTS =  \
 	$(OBJS)\test_test.obj \
 	$(OBJS)\test_test.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -277,5 +284,5 @@ $(OBJS)\test_test.obj: .\test.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(TEST_CXXFLAGS) $**
 
 $(OBJS)\test_test.res: .\test.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
 
diff --git a/samples/html/test/makefile.wat b/samples/html/test/makefile.wat
index 657b4dadc4..83bcd33dcb 100644
--- a/samples/html/test/makefile.wat
+++ b/samples/html/test/makefile.wat
@@ -262,5 +262,5 @@ $(OBJS)\test_test.obj :  .AUTODEPEND .\test.cpp
 	$(CXX) -zq -fo=$^@ $(TEST_CXXFLAGS) $<
 
 $(OBJS)\test_test.res :  .AUTODEPEND .\test.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
 
diff --git a/samples/html/virtual/Makefile.in b/samples/html/virtual/Makefile.in
index 18f022a737..4e81cf048d 100644
--- a/samples/html/virtual/Makefile.in
+++ b/samples/html/virtual/Makefile.in
@@ -193,7 +193,7 @@ virtual_virtual.o: $(srcdir)/virtual.cpp
 	$(CXXC) -c -o $@ $(VIRTUAL_CXXFLAGS) $(srcdir)/virtual.cpp
 
 virtual_virtual_rc.o: $(srcdir)/virtual.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/html/virtual/makefile.bcc b/samples/html/virtual/makefile.bcc
index 1dde347015..22d83afbe3 100644
--- a/samples/html/virtual/makefile.bcc
+++ b/samples/html/virtual/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 VIRTUAL_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 VIRTUAL_OBJECTS =  \
 	$(OBJS)\virtual_virtual.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -223,5 +229,5 @@ $(OBJS)\virtual_virtual.obj: .\virtual.cpp
 	$(CXX) -q -c -P -o$@ $(VIRTUAL_CXXFLAGS) $**
 
 $(OBJS)\virtual_virtual.res: .\virtual.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
 
diff --git a/samples/html/virtual/makefile.gcc b/samples/html/virtual/makefile.gcc
index a40413930e..b532e0f71d 100644
--- a/samples/html/virtual/makefile.gcc
+++ b/samples/html/virtual/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 VIRTUAL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 VIRTUAL_OBJECTS =  \
 	$(OBJS)\virtual_virtual.o \
 	$(OBJS)\virtual_virtual_rc.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -216,7 +222,7 @@ $(OBJS)\virtual_virtual.o: ./virtual.cpp
 	$(CXX) -c -o $@ $(VIRTUAL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\virtual_virtual_rc.o: ./virtual.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/html/virtual/makefile.vc b/samples/html/virtual/makefile.vc
index 9ae890b1bc..c3e10b1ebf 100644
--- a/samples/html/virtual/makefile.vc
+++ b/samples/html/virtual/makefile.vc
@@ -22,9 +22,10 @@ VIRTUAL_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\virtual.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 VIRTUAL_OBJECTS =  \
 	$(OBJS)\virtual_virtual.obj \
 	$(OBJS)\virtual_virtual.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -273,5 +280,5 @@ $(OBJS)\virtual_virtual.obj: .\virtual.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(VIRTUAL_CXXFLAGS) $**
 
 $(OBJS)\virtual_virtual.res: .\virtual.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
 
diff --git a/samples/html/virtual/makefile.wat b/samples/html/virtual/makefile.wat
index 0e1e3c16e8..d0c5f26e76 100644
--- a/samples/html/virtual/makefile.wat
+++ b/samples/html/virtual/makefile.wat
@@ -257,5 +257,5 @@ $(OBJS)\virtual_virtual.obj :  .AUTODEPEND .\virtual.cpp
 	$(CXX) -zq -fo=$^@ $(VIRTUAL_CXXFLAGS) $<
 
 $(OBJS)\virtual_virtual.res :  .AUTODEPEND .\virtual.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
 
diff --git a/samples/html/widget/Makefile.in b/samples/html/widget/Makefile.in
index 760be244f6..5df53adf11 100644
--- a/samples/html/widget/Makefile.in
+++ b/samples/html/widget/Makefile.in
@@ -193,7 +193,7 @@ widget_widget.o: $(srcdir)/widget.cpp
 	$(CXXC) -c -o $@ $(WIDGET_CXXFLAGS) $(srcdir)/widget.cpp
 
 widget_widget_rc.o: $(srcdir)/widget.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/html/widget/makefile.bcc b/samples/html/widget/makefile.bcc
index 167375101b..76ee516257 100644
--- a/samples/html/widget/makefile.bcc
+++ b/samples/html/widget/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 WIDGET_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 WIDGET_OBJECTS =  \
 	$(OBJS)\widget_widget.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -223,5 +229,5 @@ $(OBJS)\widget_widget.obj: .\widget.cpp
 	$(CXX) -q -c -P -o$@ $(WIDGET_CXXFLAGS) $**
 
 $(OBJS)\widget_widget.res: .\widget.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
 
diff --git a/samples/html/widget/makefile.gcc b/samples/html/widget/makefile.gcc
index 3c1c49c679..7724056563 100644
--- a/samples/html/widget/makefile.gcc
+++ b/samples/html/widget/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 WIDGET_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 WIDGET_OBJECTS =  \
 	$(OBJS)\widget_widget.o \
 	$(OBJS)\widget_widget_rc.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -216,7 +222,7 @@ $(OBJS)\widget_widget.o: ./widget.cpp
 	$(CXX) -c -o $@ $(WIDGET_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\widget_widget_rc.o: ./widget.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/html/widget/makefile.vc b/samples/html/widget/makefile.vc
index 05c988f523..cdb5b3ec55 100644
--- a/samples/html/widget/makefile.vc
+++ b/samples/html/widget/makefile.vc
@@ -22,9 +22,10 @@ WIDGET_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\widget.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 WIDGET_OBJECTS =  \
 	$(OBJS)\widget_widget.obj \
 	$(OBJS)\widget_widget.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -273,5 +280,5 @@ $(OBJS)\widget_widget.obj: .\widget.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(WIDGET_CXXFLAGS) $**
 
 $(OBJS)\widget_widget.res: .\widget.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
 
diff --git a/samples/html/widget/makefile.wat b/samples/html/widget/makefile.wat
index ee9f46533f..c6084fb491 100644
--- a/samples/html/widget/makefile.wat
+++ b/samples/html/widget/makefile.wat
@@ -257,5 +257,5 @@ $(OBJS)\widget_widget.obj :  .AUTODEPEND .\widget.cpp
 	$(CXX) -zq -fo=$^@ $(WIDGET_CXXFLAGS) $<
 
 $(OBJS)\widget_widget.res :  .AUTODEPEND .\widget.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
 
diff --git a/samples/html/zip/Makefile.in b/samples/html/zip/Makefile.in
index 563fca4f6e..a780afcd32 100644
--- a/samples/html/zip/Makefile.in
+++ b/samples/html/zip/Makefile.in
@@ -190,7 +190,7 @@ zip_zip.o: $(srcdir)/zip.cpp
 	$(CXXC) -c -o $@ $(ZIP_CXXFLAGS) $(srcdir)/zip.cpp
 
 zip_zip_rc.o: $(srcdir)/zip.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/html/zip/makefile.bcc b/samples/html/zip/makefile.bcc
index acc6373cb0..f711265b27 100644
--- a/samples/html/zip/makefile.bcc
+++ b/samples/html/zip/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 ZIP_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 ZIP_OBJECTS =  \
 	$(OBJS)\zip_zip.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -223,5 +229,5 @@ $(OBJS)\zip_zip.obj: .\zip.cpp
 	$(CXX) -q -c -P -o$@ $(ZIP_CXXFLAGS) $**
 
 $(OBJS)\zip_zip.res: .\zip.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
 
diff --git a/samples/html/zip/makefile.gcc b/samples/html/zip/makefile.gcc
index 16ab2400d5..4c30af0b4e 100644
--- a/samples/html/zip/makefile.gcc
+++ b/samples/html/zip/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 ZIP_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
+	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 ZIP_OBJECTS =  \
 	$(OBJS)\zip_zip.o \
 	$(OBJS)\zip_zip_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -215,7 +222,7 @@ $(OBJS)\zip_zip.o: ./zip.cpp
 	$(CXX) -c -o $@ $(ZIP_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\zip_zip_rc.o: ./zip.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/html/zip/makefile.vc b/samples/html/zip/makefile.vc
index 7e5e2a50e6..7392a87ba2 100644
--- a/samples/html/zip/makefile.vc
+++ b/samples/html/zip/makefile.vc
@@ -22,9 +22,10 @@ ZIP_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\zip.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 ZIP_OBJECTS =  \
 	$(OBJS)\zip_zip.obj \
 	$(OBJS)\zip_zip.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -273,5 +280,5 @@ $(OBJS)\zip_zip.obj: .\zip.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(ZIP_CXXFLAGS) $**
 
 $(OBJS)\zip_zip.res: .\zip.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
 
diff --git a/samples/html/zip/makefile.wat b/samples/html/zip/makefile.wat
index 236e549e37..c3a1f8bc5e 100644
--- a/samples/html/zip/makefile.wat
+++ b/samples/html/zip/makefile.wat
@@ -257,5 +257,5 @@ $(OBJS)\zip_zip.obj :  .AUTODEPEND .\zip.cpp
 	$(CXX) -zq -fo=$^@ $(ZIP_CXXFLAGS) $<
 
 $(OBJS)\zip_zip.res :  .AUTODEPEND .\zip.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
 
diff --git a/samples/image/Makefile.in b/samples/image/Makefile.in
index dd4088b17d..d5e2b43660 100644
--- a/samples/image/Makefile.in
+++ b/samples/image/Makefile.in
@@ -187,7 +187,7 @@ image_image.o: $(srcdir)/image.cpp
 	$(CXXC) -c -o $@ $(IMAGE_CXXFLAGS) $(srcdir)/image.cpp
 
 image_image_rc.o: $(srcdir)/image.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/image/makefile.bcc b/samples/image/makefile.bcc
index 13d2bfa3db..ad8fd6743d 100644
--- a/samples/image/makefile.bcc
+++ b/samples/image/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 IMAGE_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 IMAGE_OBJECTS =  \
 	$(OBJS)\image_image.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\image_image.obj: .\image.cpp
 	$(CXX) -q -c -P -o$@ $(IMAGE_CXXFLAGS) $**
 
 $(OBJS)\image_image.res: .\image.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/image/makefile.gcc b/samples/image/makefile.gcc
index 663d301180..78f18d1068 100644
--- a/samples/image/makefile.gcc
+++ b/samples/image/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 IMAGE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 IMAGE_OBJECTS =  \
 	$(OBJS)\image_image.o \
 	$(OBJS)\image_image_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +218,7 @@ $(OBJS)\image_image.o: ./image.cpp
 	$(CXX) -c -o $@ $(IMAGE_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\image_image_rc.o: ./image.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/image/makefile.vc b/samples/image/makefile.vc
index 6262268c5b..53e3c5189f 100644
--- a/samples/image/makefile.vc
+++ b/samples/image/makefile.vc
@@ -22,9 +22,10 @@ IMAGE_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\image.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 IMAGE_OBJECTS =  \
 	$(OBJS)\image_image.obj \
 	$(OBJS)\image_image.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\image_image.obj: .\image.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(IMAGE_CXXFLAGS) $**
 
 $(OBJS)\image_image.res: .\image.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/image/makefile.wat b/samples/image/makefile.wat
index 4bf29af9de..24d53c7964 100644
--- a/samples/image/makefile.wat
+++ b/samples/image/makefile.wat
@@ -252,5 +252,5 @@ $(OBJS)\image_image.obj :  .AUTODEPEND .\image.cpp
 	$(CXX) -zq -fo=$^@ $(IMAGE_CXXFLAGS) $<
 
 $(OBJS)\image_image.res :  .AUTODEPEND .\image.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/internat/Makefile.in b/samples/internat/Makefile.in
index e2d54770ab..dd9aa6008c 100644
--- a/samples/internat/Makefile.in
+++ b/samples/internat/Makefile.in
@@ -284,7 +284,7 @@ internat_internat.o: $(srcdir)/internat.cpp
 	$(CXXC) -c -o $@ $(INTERNAT_CXXFLAGS) $(srcdir)/internat.cpp
 
 internat_internat_rc.o: $(srcdir)/internat.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/internat/makefile.bcc b/samples/internat/makefile.bcc
index 6d35a5818d..3fd3aff5cf 100644
--- a/samples/internat/makefile.bcc
+++ b/samples/internat/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 INTERNAT_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 INTERNAT_OBJECTS =  \
 	$(OBJS)\internat_internat.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -250,5 +257,5 @@ $(OBJS)\internat_internat.obj: .\internat.cpp
 	$(CXX) -q -c -P -o$@ $(INTERNAT_CXXFLAGS) $**
 
 $(OBJS)\internat_internat.res: .\internat.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/internat/makefile.gcc b/samples/internat/makefile.gcc
index 449fa61ee3..ea55e97aae 100644
--- a/samples/internat/makefile.gcc
+++ b/samples/internat/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 INTERNAT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 INTERNAT_OBJECTS =  \
 	$(OBJS)\internat_internat.o \
 	$(OBJS)\internat_internat_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -243,7 +250,7 @@ $(OBJS)\internat_internat.o: ./internat.cpp
 	$(CXX) -c -o $@ $(INTERNAT_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\internat_internat_rc.o: ./internat.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean bg cs de fr ja ka pl ru sv
 
diff --git a/samples/internat/makefile.vc b/samples/internat/makefile.vc
index 182aac1aff..8ac536c497 100644
--- a/samples/internat/makefile.vc
+++ b/samples/internat/makefile.vc
@@ -22,9 +22,10 @@ INTERNAT_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\internat.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 INTERNAT_OBJECTS =  \
 	$(OBJS)\internat_internat.obj \
 	$(OBJS)\internat_internat.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -301,5 +308,5 @@ $(OBJS)\internat_internat.obj: .\internat.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(INTERNAT_CXXFLAGS) $**
 
 $(OBJS)\internat_internat.res: .\internat.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/internat/makefile.wat b/samples/internat/makefile.wat
index df99769104..7f27691c51 100644
--- a/samples/internat/makefile.wat
+++ b/samples/internat/makefile.wat
@@ -284,5 +284,5 @@ $(OBJS)\internat_internat.obj :  .AUTODEPEND .\internat.cpp
 	$(CXX) -zq -fo=$^@ $(INTERNAT_CXXFLAGS) $<
 
 $(OBJS)\internat_internat.res :  .AUTODEPEND .\internat.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/ipc/Makefile.in b/samples/ipc/Makefile.in
index 10ff66fdc3..418d8e51cc 100644
--- a/samples/ipc/Makefile.in
+++ b/samples/ipc/Makefile.in
@@ -231,13 +231,13 @@ server.app/Contents/PkgInfo: server$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info.p
 @COND_PLATFORM_MACOSX_1@server_bundle: $(____server_BUNDLE_TGT_REF_DEP)
 
 client_sample_rc.o: $(srcdir)/../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_6)  $(__EXCEPTIONS_DEFINE_p_6) $(__RTTI_DEFINE_p_6) $(__THREAD_DEFINE_p_6)  --include-dir $(srcdir) $(__DLLFLAG_p_6) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_6)  $(__EXCEPTIONS_DEFINE_p_6) $(__RTTI_DEFINE_p_6) $(__THREAD_DEFINE_p_6)   --include-dir $(srcdir) $(__DLLFLAG_p_6) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 client_client.o: $(srcdir)/client.cpp
 	$(CXXC) -c -o $@ $(CLIENT_CXXFLAGS) $(srcdir)/client.cpp
 
 server_sample_rc.o: $(srcdir)/../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_6)  $(__EXCEPTIONS_DEFINE_p_6) $(__RTTI_DEFINE_p_6) $(__THREAD_DEFINE_p_6)  --include-dir $(srcdir) $(__DLLFLAG_p_6) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_6)  $(__EXCEPTIONS_DEFINE_p_6) $(__RTTI_DEFINE_p_6) $(__THREAD_DEFINE_p_6)   --include-dir $(srcdir) $(__DLLFLAG_p_6) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 server_server.o: $(srcdir)/server.cpp
 	$(CXXC) -c -o $@ $(SERVER_CXXFLAGS) $(srcdir)/server.cpp
diff --git a/samples/ipc/makefile.bcc b/samples/ipc/makefile.bcc
index 175de86738..037d38b3b1 100644
--- a/samples/ipc/makefile.bcc
+++ b/samples/ipc/makefile.bcc
@@ -30,15 +30,17 @@ SETUPHDIR = \
 CLIENT_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_0) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 CLIENT_OBJECTS =  \
 	$(OBJS)\client_client.obj
 SERVER_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_0) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 SERVER_OBJECTS =  \
 	$(OBJS)\server_server.obj
 
@@ -149,6 +151,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_0 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_0 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -233,13 +241,13 @@ $(OBJS)\server.exe: $(SERVER_OBJECTS)  $(OBJS)\server_sample.res
 |
 
 $(OBJS)\client_sample.res: .\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_0) -i.\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_0) -i.\..\..\samples $**
 
 $(OBJS)\client_client.obj: .\client.cpp
 	$(CXX) -q -c -P -o$@ $(CLIENT_CXXFLAGS) $**
 
 $(OBJS)\server_sample.res: .\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_0) -i.\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_0) -i.\..\..\samples $**
 
 $(OBJS)\server_server.obj: .\server.cpp
 	$(CXX) -q -c -P -o$@ $(SERVER_CXXFLAGS) $**
diff --git a/samples/ipc/makefile.gcc b/samples/ipc/makefile.gcc
index f563279028..d089f5a5be 100644
--- a/samples/ipc/makefile.gcc
+++ b/samples/ipc/makefile.gcc
@@ -22,18 +22,18 @@ SETUPHDIR = \
 CLIENT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 CLIENT_OBJECTS =  \
 	$(OBJS)\client_sample_rc.o \
 	$(OBJS)\client_client.o
 SERVER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 SERVER_OBJECTS =  \
 	$(OBJS)\server_sample_rc.o \
 	$(OBJS)\server_server.o
@@ -142,6 +142,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_0 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_0 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -221,13 +227,13 @@ $(OBJS)\server.exe: $(SERVER_OBJECTS) $(OBJS)\server_sample_rc.o
 	$(CXX) -o $@ $(SERVER_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  $(__WXLIB_CORE_p)  $(__WXLIB_NET_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\client_sample_rc.o: ./../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_0) --include-dir ./../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_0) --include-dir ./../../samples
 
 $(OBJS)\client_client.o: ./client.cpp
 	$(CXX) -c -o $@ $(CLIENT_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\server_sample_rc.o: ./../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_0) --include-dir ./../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_0) --include-dir ./../../samples
 
 $(OBJS)\server_server.o: ./server.cpp
 	$(CXX) -c -o $@ $(SERVER_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/ipc/makefile.vc b/samples/ipc/makefile.vc
index d0ea25bf78..8924e95e21 100644
--- a/samples/ipc/makefile.vc
+++ b/samples/ipc/makefile.vc
@@ -22,9 +22,9 @@ CLIENT_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) /Fd$(OBJS)\client.pdb $(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) \
 	$(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) \
-	/D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
+	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
 CLIENT_OBJECTS =  \
 	$(OBJS)\client_sample.res \
 	$(OBJS)\client_client.obj
@@ -32,9 +32,9 @@ SERVER_CXXFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) /Fd$(OBJS)\server.pdb $(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) \
 	$(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) \
-	/D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
+	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
 SERVER_OBJECTS =  \
 	$(OBJS)\server_sample.res \
 	$(OBJS)\server_server.obj
@@ -224,6 +224,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_0 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_0 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -290,13 +296,13 @@ $(OBJS)\server.exe: $(SERVER_OBJECTS) $(OBJS)\server_sample.res
 <<
 
 $(OBJS)\client_sample.res: .\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_0) $(__NO_VC_CRTDBG_p_0)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_0) /d _WINDOWS /i .\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_0) $(__NO_VC_CRTDBG_p_0)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_0) /d _WINDOWS /i .\..\..\samples $**
 
 $(OBJS)\client_client.obj: .\client.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(CLIENT_CXXFLAGS) $**
 
 $(OBJS)\server_sample.res: .\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_0) $(__NO_VC_CRTDBG_p_0)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_0) /d _WINDOWS /i .\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_0) $(__NO_VC_CRTDBG_p_0)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_0) /d _WINDOWS /i .\..\..\samples $**
 
 $(OBJS)\server_server.obj: .\server.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(SERVER_CXXFLAGS) $**
diff --git a/samples/ipc/makefile.wat b/samples/ipc/makefile.wat
index 861ed07ff0..4e6b4509db 100644
--- a/samples/ipc/makefile.wat
+++ b/samples/ipc/makefile.wat
@@ -270,13 +270,13 @@ $(OBJS)\server.exe :  $(SERVER_OBJECTS) $(OBJS)\server_sample.res
 	wlink @$(OBJS)\server.lbc
 
 $(OBJS)\client_sample.res :  .AUTODEPEND .\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
 
 $(OBJS)\client_client.obj :  .AUTODEPEND .\client.cpp
 	$(CXX) -zq -fo=$^@ $(CLIENT_CXXFLAGS) $<
 
 $(OBJS)\server_sample.res :  .AUTODEPEND .\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
 
 $(OBJS)\server_server.obj :  .AUTODEPEND .\server.cpp
 	$(CXX) -zq -fo=$^@ $(SERVER_CXXFLAGS) $<
diff --git a/samples/joytest/Makefile.in b/samples/joytest/Makefile.in
index 3a19df2573..9aa41c0109 100644
--- a/samples/joytest/Makefile.in
+++ b/samples/joytest/Makefile.in
@@ -181,7 +181,7 @@ joytest_joytest.o: $(srcdir)/joytest.cpp
 	$(CXXC) -c -o $@ $(JOYTEST_CXXFLAGS) $(srcdir)/joytest.cpp
 
 joytest_joytest_rc.o: $(srcdir)/joytest.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/joytest/makefile.bcc b/samples/joytest/makefile.bcc
index 8128b699dd..b66d17956e 100644
--- a/samples/joytest/makefile.bcc
+++ b/samples/joytest/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 JOYTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 JOYTEST_OBJECTS =  \
 	$(OBJS)\joytest_joytest.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\joytest_joytest.obj: .\joytest.cpp
 	$(CXX) -q -c -P -o$@ $(JOYTEST_CXXFLAGS) $**
 
 $(OBJS)\joytest_joytest.res: .\joytest.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/joytest/makefile.gcc b/samples/joytest/makefile.gcc
index 1cf5ea79d8..cb164563c2 100644
--- a/samples/joytest/makefile.gcc
+++ b/samples/joytest/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 JOYTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 JOYTEST_OBJECTS =  \
 	$(OBJS)\joytest_joytest.o \
 	$(OBJS)\joytest_joytest_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +218,7 @@ $(OBJS)\joytest_joytest.o: ./joytest.cpp
 	$(CXX) -c -o $@ $(JOYTEST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\joytest_joytest_rc.o: ./joytest.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/joytest/makefile.vc b/samples/joytest/makefile.vc
index f65c35b126..c2940423f1 100644
--- a/samples/joytest/makefile.vc
+++ b/samples/joytest/makefile.vc
@@ -22,9 +22,10 @@ JOYTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\joytest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 JOYTEST_OBJECTS =  \
 	$(OBJS)\joytest_joytest.obj \
 	$(OBJS)\joytest_joytest.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\joytest_joytest.obj: .\joytest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(JOYTEST_CXXFLAGS) $**
 
 $(OBJS)\joytest_joytest.res: .\joytest.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/joytest/makefile.wat b/samples/joytest/makefile.wat
index 6df82aa44e..8c123cf9c1 100644
--- a/samples/joytest/makefile.wat
+++ b/samples/joytest/makefile.wat
@@ -253,5 +253,5 @@ $(OBJS)\joytest_joytest.obj :  .AUTODEPEND .\joytest.cpp
 	$(CXX) -zq -fo=$^@ $(JOYTEST_CXXFLAGS) $<
 
 $(OBJS)\joytest_joytest.res :  .AUTODEPEND .\joytest.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/keyboard/Makefile.in b/samples/keyboard/Makefile.in
index ab9388f5dc..78dd50c3e7 100644
--- a/samples/keyboard/Makefile.in
+++ b/samples/keyboard/Makefile.in
@@ -176,7 +176,7 @@ keyboard_keyboard.o: $(srcdir)/keyboard.cpp
 	$(CXXC) -c -o $@ $(KEYBOARD_CXXFLAGS) $(srcdir)/keyboard.cpp
 
 keyboard_keyboard_rc.o: $(srcdir)/keyboard.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/keyboard/makefile.bcc b/samples/keyboard/makefile.bcc
index 8eabeafad4..177909f644 100644
--- a/samples/keyboard/makefile.bcc
+++ b/samples/keyboard/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 KEYBOARD_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 KEYBOARD_OBJECTS =  \
 	$(OBJS)\keyboard_keyboard.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\keyboard_keyboard.obj: .\keyboard.cpp
 	$(CXX) -q -c -P -o$@ $(KEYBOARD_CXXFLAGS) $**
 
 $(OBJS)\keyboard_keyboard.res: .\keyboard.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/keyboard/makefile.gcc b/samples/keyboard/makefile.gcc
index 126982dbbd..3ea74112d2 100644
--- a/samples/keyboard/makefile.gcc
+++ b/samples/keyboard/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 KEYBOARD_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 KEYBOARD_OBJECTS =  \
 	$(OBJS)\keyboard_keyboard.o \
 	$(OBJS)\keyboard_keyboard_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\keyboard_keyboard.o: ./keyboard.cpp
 	$(CXX) -c -o $@ $(KEYBOARD_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\keyboard_keyboard_rc.o: ./keyboard.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/keyboard/makefile.vc b/samples/keyboard/makefile.vc
index 3c2f418be3..6557622b3c 100644
--- a/samples/keyboard/makefile.vc
+++ b/samples/keyboard/makefile.vc
@@ -22,9 +22,10 @@ KEYBOARD_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\keyboard.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 KEYBOARD_OBJECTS =  \
 	$(OBJS)\keyboard_keyboard.obj \
 	$(OBJS)\keyboard_keyboard.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\keyboard_keyboard.obj: .\keyboard.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(KEYBOARD_CXXFLAGS) $**
 
 $(OBJS)\keyboard_keyboard.res: .\keyboard.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/keyboard/makefile.wat b/samples/keyboard/makefile.wat
index 7b1f016ce9..c18ec54bb5 100644
--- a/samples/keyboard/makefile.wat
+++ b/samples/keyboard/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\keyboard_keyboard.obj :  .AUTODEPEND .\keyboard.cpp
 	$(CXX) -zq -fo=$^@ $(KEYBOARD_CXXFLAGS) $<
 
 $(OBJS)\keyboard_keyboard.res :  .AUTODEPEND .\keyboard.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/layout/Makefile.in b/samples/layout/Makefile.in
index 8d6e4492f5..856e71eedf 100644
--- a/samples/layout/Makefile.in
+++ b/samples/layout/Makefile.in
@@ -176,7 +176,7 @@ layout_layout.o: $(srcdir)/layout.cpp
 	$(CXXC) -c -o $@ $(LAYOUT_CXXFLAGS) $(srcdir)/layout.cpp
 
 layout_layout_rc.o: $(srcdir)/layout.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/layout/makefile.bcc b/samples/layout/makefile.bcc
index 82e381a5cb..2c3c6a8f0a 100644
--- a/samples/layout/makefile.bcc
+++ b/samples/layout/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 LAYOUT_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 LAYOUT_OBJECTS =  \
 	$(OBJS)\layout_layout.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\layout_layout.obj: .\layout.cpp
 	$(CXX) -q -c -P -o$@ $(LAYOUT_CXXFLAGS) $**
 
 $(OBJS)\layout_layout.res: .\layout.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/layout/makefile.gcc b/samples/layout/makefile.gcc
index 92882d4517..8d442599cf 100644
--- a/samples/layout/makefile.gcc
+++ b/samples/layout/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 LAYOUT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 LAYOUT_OBJECTS =  \
 	$(OBJS)\layout_layout.o \
 	$(OBJS)\layout_layout_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\layout_layout.o: ./layout.cpp
 	$(CXX) -c -o $@ $(LAYOUT_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\layout_layout_rc.o: ./layout.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/layout/makefile.vc b/samples/layout/makefile.vc
index 0c92b64d99..1ec8d5f31f 100644
--- a/samples/layout/makefile.vc
+++ b/samples/layout/makefile.vc
@@ -22,9 +22,10 @@ LAYOUT_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\layout.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 LAYOUT_OBJECTS =  \
 	$(OBJS)\layout_layout.obj \
 	$(OBJS)\layout_layout.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\layout_layout.obj: .\layout.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(LAYOUT_CXXFLAGS) $**
 
 $(OBJS)\layout_layout.res: .\layout.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/layout/makefile.wat b/samples/layout/makefile.wat
index 0710a2e2e1..aa8110bc5c 100644
--- a/samples/layout/makefile.wat
+++ b/samples/layout/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\layout_layout.obj :  .AUTODEPEND .\layout.cpp
 	$(CXX) -zq -fo=$^@ $(LAYOUT_CXXFLAGS) $<
 
 $(OBJS)\layout_layout.res :  .AUTODEPEND .\layout.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/listbox/Makefile.in b/samples/listbox/Makefile.in
index 95e348c636..cf854cbec2 100644
--- a/samples/listbox/Makefile.in
+++ b/samples/listbox/Makefile.in
@@ -173,7 +173,7 @@ listbox.app/Contents/PkgInfo: listbox$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info
 @COND_PLATFORM_MACOSX_1@listbox_bundle: $(____listbox_BUNDLE_TGT_REF_DEP)
 
 listbox_sample_rc.o: $(srcdir)/../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 listbox_lboxtest.o: $(srcdir)/lboxtest.cpp
 	$(CXXC) -c -o $@ $(LISTBOX_CXXFLAGS) $(srcdir)/lboxtest.cpp
diff --git a/samples/listbox/makefile.bcc b/samples/listbox/makefile.bcc
index e4977e5948..026f95eba0 100644
--- a/samples/listbox/makefile.bcc
+++ b/samples/listbox/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 LISTBOX_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 LISTBOX_OBJECTS =  \
 	$(OBJS)\listbox_lboxtest.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -211,7 +218,7 @@ $(OBJS)\listbox.exe: $(LISTBOX_OBJECTS)  $(OBJS)\listbox_sample.res
 |
 
 $(OBJS)\listbox_sample.res: .\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
 
 $(OBJS)\listbox_lboxtest.obj: .\lboxtest.cpp
 	$(CXX) -q -c -P -o$@ $(LISTBOX_CXXFLAGS) $**
diff --git a/samples/listbox/makefile.gcc b/samples/listbox/makefile.gcc
index 1f2bfca6ba..bbf90812b1 100644
--- a/samples/listbox/makefile.gcc
+++ b/samples/listbox/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 LISTBOX_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 LISTBOX_OBJECTS =  \
 	$(OBJS)\listbox_sample_rc.o \
 	$(OBJS)\listbox_lboxtest.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -204,7 +211,7 @@ $(OBJS)\listbox.exe: $(LISTBOX_OBJECTS) $(OBJS)\listbox_sample_rc.o
 	$(CXX) -o $@ $(LISTBOX_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\listbox_sample_rc.o: ./../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
 
 $(OBJS)\listbox_lboxtest.o: ./lboxtest.cpp
 	$(CXX) -c -o $@ $(LISTBOX_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/listbox/makefile.vc b/samples/listbox/makefile.vc
index 81ad326124..66b90032fa 100644
--- a/samples/listbox/makefile.vc
+++ b/samples/listbox/makefile.vc
@@ -22,9 +22,10 @@ LISTBOX_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\listbox.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 LISTBOX_OBJECTS =  \
 	$(OBJS)\listbox_sample.res \
 	$(OBJS)\listbox_lboxtest.obj
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -262,7 +269,7 @@ $(OBJS)\listbox.exe: $(LISTBOX_OBJECTS) $(OBJS)\listbox_sample.res
 <<
 
 $(OBJS)\listbox_sample.res: .\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
 
 $(OBJS)\listbox_lboxtest.obj: .\lboxtest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(LISTBOX_CXXFLAGS) $**
diff --git a/samples/listbox/makefile.wat b/samples/listbox/makefile.wat
index c59017a5b3..ee96eb4a3a 100644
--- a/samples/listbox/makefile.wat
+++ b/samples/listbox/makefile.wat
@@ -245,7 +245,7 @@ $(OBJS)\listbox.exe :  $(LISTBOX_OBJECTS) $(OBJS)\listbox_sample.res
 	wlink @$(OBJS)\listbox.lbc
 
 $(OBJS)\listbox_sample.res :  .AUTODEPEND .\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
 
 $(OBJS)\listbox_lboxtest.obj :  .AUTODEPEND .\lboxtest.cpp
 	$(CXX) -zq -fo=$^@ $(LISTBOX_CXXFLAGS) $<
diff --git a/samples/listctrl/Makefile.in b/samples/listctrl/Makefile.in
index ee99e061b2..dbb8faf597 100644
--- a/samples/listctrl/Makefile.in
+++ b/samples/listctrl/Makefile.in
@@ -176,7 +176,7 @@ listctrl_listtest.o: $(srcdir)/listtest.cpp
 	$(CXXC) -c -o $@ $(LISTCTRL_CXXFLAGS) $(srcdir)/listtest.cpp
 
 listctrl_listtest_rc.o: $(srcdir)/listtest.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/listctrl/makefile.bcc b/samples/listctrl/makefile.bcc
index 81a95022cf..406d73c1f1 100644
--- a/samples/listctrl/makefile.bcc
+++ b/samples/listctrl/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 LISTCTRL_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 LISTCTRL_OBJECTS =  \
 	$(OBJS)\listctrl_listtest.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\listctrl_listtest.obj: .\listtest.cpp
 	$(CXX) -q -c -P -o$@ $(LISTCTRL_CXXFLAGS) $**
 
 $(OBJS)\listctrl_listtest.res: .\listtest.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/listctrl/makefile.gcc b/samples/listctrl/makefile.gcc
index 0440623ab3..08f6b91d5d 100644
--- a/samples/listctrl/makefile.gcc
+++ b/samples/listctrl/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 LISTCTRL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 LISTCTRL_OBJECTS =  \
 	$(OBJS)\listctrl_listtest.o \
 	$(OBJS)\listctrl_listtest_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\listctrl_listtest.o: ./listtest.cpp
 	$(CXX) -c -o $@ $(LISTCTRL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\listctrl_listtest_rc.o: ./listtest.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/listctrl/makefile.vc b/samples/listctrl/makefile.vc
index 8ba207f79c..7a46fe1c94 100644
--- a/samples/listctrl/makefile.vc
+++ b/samples/listctrl/makefile.vc
@@ -22,9 +22,10 @@ LISTCTRL_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\listctrl.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 LISTCTRL_OBJECTS =  \
 	$(OBJS)\listctrl_listtest.obj \
 	$(OBJS)\listctrl_listtest.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\listctrl_listtest.obj: .\listtest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(LISTCTRL_CXXFLAGS) $**
 
 $(OBJS)\listctrl_listtest.res: .\listtest.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/listctrl/makefile.wat b/samples/listctrl/makefile.wat
index 0a6a441770..09c3580bad 100644
--- a/samples/listctrl/makefile.wat
+++ b/samples/listctrl/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\listctrl_listtest.obj :  .AUTODEPEND .\listtest.cpp
 	$(CXX) -zq -fo=$^@ $(LISTCTRL_CXXFLAGS) $<
 
 $(OBJS)\listctrl_listtest.res :  .AUTODEPEND .\listtest.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/mdi/Makefile.in b/samples/mdi/Makefile.in
index 7c2a423390..454dedc7ec 100644
--- a/samples/mdi/Makefile.in
+++ b/samples/mdi/Makefile.in
@@ -173,7 +173,7 @@ mdi_mdi.o: $(srcdir)/mdi.cpp
 	$(CXXC) -c -o $@ $(MDI_CXXFLAGS) $(srcdir)/mdi.cpp
 
 mdi_mdi_rc.o: $(srcdir)/mdi.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/mdi/makefile.bcc b/samples/mdi/makefile.bcc
index 2b7c1a6b2d..941e4e5128 100644
--- a/samples/mdi/makefile.bcc
+++ b/samples/mdi/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 MDI_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 MDI_OBJECTS =  \
 	$(OBJS)\mdi_mdi.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\mdi_mdi.obj: .\mdi.cpp
 	$(CXX) -q -c -P -o$@ $(MDI_CXXFLAGS) $**
 
 $(OBJS)\mdi_mdi.res: .\mdi.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/mdi/makefile.gcc b/samples/mdi/makefile.gcc
index edc4df1803..4799205d75 100644
--- a/samples/mdi/makefile.gcc
+++ b/samples/mdi/makefile.gcc
@@ -22,8 +22,8 @@ SETUPHDIR = \
 MDI_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
 	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 MDI_OBJECTS =  \
 	$(OBJS)\mdi_mdi.o \
@@ -133,6 +133,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +213,7 @@ $(OBJS)\mdi_mdi.o: ./mdi.cpp
 	$(CXX) -c -o $@ $(MDI_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\mdi_mdi_rc.o: ./mdi.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/mdi/makefile.vc b/samples/mdi/makefile.vc
index c7d18ebcf3..a6a1d18aeb 100644
--- a/samples/mdi/makefile.vc
+++ b/samples/mdi/makefile.vc
@@ -22,9 +22,10 @@ MDI_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\mdi.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 MDI_OBJECTS =  \
 	$(OBJS)\mdi_mdi.obj \
 	$(OBJS)\mdi_mdi.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\mdi_mdi.obj: .\mdi.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MDI_CXXFLAGS) $**
 
 $(OBJS)\mdi_mdi.res: .\mdi.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/mdi/makefile.wat b/samples/mdi/makefile.wat
index a6a19288a4..73e0404b0f 100644
--- a/samples/mdi/makefile.wat
+++ b/samples/mdi/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\mdi_mdi.obj :  .AUTODEPEND .\mdi.cpp
 	$(CXX) -zq -fo=$^@ $(MDI_CXXFLAGS) $<
 
 $(OBJS)\mdi_mdi.res :  .AUTODEPEND .\mdi.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/mediaplayer/Makefile.in b/samples/mediaplayer/Makefile.in
index 5fb613dcc6..0f503c1c37 100644
--- a/samples/mediaplayer/Makefile.in
+++ b/samples/mediaplayer/Makefile.in
@@ -177,7 +177,7 @@ mediaplayer.app/Contents/PkgInfo: mediaplayer$(EXEEXT) $(top_srcdir)/src/mac/car
 @COND_PLATFORM_MACOSX_1@mediaplayer_bundle: $(____mediaplayer_BUNDLE_TGT_REF_DEP)
 
 mediaplayer_sample_rc.o: $(srcdir)/../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 mediaplayer_mediaplayer.o: $(srcdir)/mediaplayer.cpp
 	$(CXXC) -c -o $@ $(MEDIAPLAYER_CXXFLAGS) $(srcdir)/mediaplayer.cpp
diff --git a/samples/mediaplayer/makefile.bcc b/samples/mediaplayer/makefile.bcc
index 436d129bbb..d64ea00d3a 100644
--- a/samples/mediaplayer/makefile.bcc
+++ b/samples/mediaplayer/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 MEDIAPLAYER_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 MEDIAPLAYER_OBJECTS =  \
 	$(OBJS)\mediaplayer_mediaplayer.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -215,7 +222,7 @@ $(OBJS)\mediaplayer.exe: $(MEDIAPLAYER_OBJECTS)  $(OBJS)\mediaplayer_sample.res
 |
 
 $(OBJS)\mediaplayer_sample.res: .\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
 
 $(OBJS)\mediaplayer_mediaplayer.obj: .\mediaplayer.cpp
 	$(CXX) -q -c -P -o$@ $(MEDIAPLAYER_CXXFLAGS) $**
diff --git a/samples/mediaplayer/makefile.gcc b/samples/mediaplayer/makefile.gcc
index 6e76f411bd..53badc70a5 100644
--- a/samples/mediaplayer/makefile.gcc
+++ b/samples/mediaplayer/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 MEDIAPLAYER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 MEDIAPLAYER_OBJECTS =  \
 	$(OBJS)\mediaplayer_sample_rc.o \
 	$(OBJS)\mediaplayer_mediaplayer.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -208,7 +215,7 @@ $(OBJS)\mediaplayer.exe: $(MEDIAPLAYER_OBJECTS) $(OBJS)\mediaplayer_sample_rc.o
 	$(CXX) -o $@ $(MEDIAPLAYER_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  $(__WXLIB_MEDIA_p)  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\mediaplayer_sample_rc.o: ./../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
 
 $(OBJS)\mediaplayer_mediaplayer.o: ./mediaplayer.cpp
 	$(CXX) -c -o $@ $(MEDIAPLAYER_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/mediaplayer/makefile.vc b/samples/mediaplayer/makefile.vc
index d9c3f7faeb..e0eb3e049a 100644
--- a/samples/mediaplayer/makefile.vc
+++ b/samples/mediaplayer/makefile.vc
@@ -22,9 +22,10 @@ MEDIAPLAYER_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\mediaplayer.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 MEDIAPLAYER_OBJECTS =  \
 	$(OBJS)\mediaplayer_sample.res \
 	$(OBJS)\mediaplayer_mediaplayer.obj
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -266,7 +273,7 @@ $(OBJS)\mediaplayer.exe: $(MEDIAPLAYER_OBJECTS) $(OBJS)\mediaplayer_sample.res
 <<
 
 $(OBJS)\mediaplayer_sample.res: .\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
 
 $(OBJS)\mediaplayer_mediaplayer.obj: .\mediaplayer.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MEDIAPLAYER_CXXFLAGS) $**
diff --git a/samples/mediaplayer/makefile.wat b/samples/mediaplayer/makefile.wat
index fc8b6be944..a67b5a21ec 100644
--- a/samples/mediaplayer/makefile.wat
+++ b/samples/mediaplayer/makefile.wat
@@ -250,7 +250,7 @@ $(OBJS)\mediaplayer.exe :  $(MEDIAPLAYER_OBJECTS) $(OBJS)\mediaplayer_sample.res
 	wlink @$(OBJS)\mediaplayer.lbc
 
 $(OBJS)\mediaplayer_sample.res :  .AUTODEPEND .\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
 
 $(OBJS)\mediaplayer_mediaplayer.obj :  .AUTODEPEND .\mediaplayer.cpp
 	$(CXX) -zq -fo=$^@ $(MEDIAPLAYER_CXXFLAGS) $<
diff --git a/samples/memcheck/Makefile.in b/samples/memcheck/Makefile.in
index 6eb74eb221..0737afc5ee 100644
--- a/samples/memcheck/Makefile.in
+++ b/samples/memcheck/Makefile.in
@@ -176,7 +176,7 @@ memcheck_memcheck.o: $(srcdir)/memcheck.cpp
 	$(CXXC) -c -o $@ $(MEMCHECK_CXXFLAGS) $(srcdir)/memcheck.cpp
 
 memcheck_memcheck_rc.o: $(srcdir)/memcheck.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/memcheck/makefile.bcc b/samples/memcheck/makefile.bcc
index 9e9e0aac7a..3ca128d84b 100644
--- a/samples/memcheck/makefile.bcc
+++ b/samples/memcheck/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 MEMCHECK_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 MEMCHECK_OBJECTS =  \
 	$(OBJS)\memcheck_memcheck.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\memcheck_memcheck.obj: .\memcheck.cpp
 	$(CXX) -q -c -P -o$@ $(MEMCHECK_CXXFLAGS) $**
 
 $(OBJS)\memcheck_memcheck.res: .\memcheck.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/memcheck/makefile.gcc b/samples/memcheck/makefile.gcc
index 87b53ce5ab..52b3f01c18 100644
--- a/samples/memcheck/makefile.gcc
+++ b/samples/memcheck/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 MEMCHECK_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 MEMCHECK_OBJECTS =  \
 	$(OBJS)\memcheck_memcheck.o \
 	$(OBJS)\memcheck_memcheck_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\memcheck_memcheck.o: ./memcheck.cpp
 	$(CXX) -c -o $@ $(MEMCHECK_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\memcheck_memcheck_rc.o: ./memcheck.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/memcheck/makefile.vc b/samples/memcheck/makefile.vc
index cfe25d7e6b..307af88522 100644
--- a/samples/memcheck/makefile.vc
+++ b/samples/memcheck/makefile.vc
@@ -22,9 +22,10 @@ MEMCHECK_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\memcheck.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 MEMCHECK_OBJECTS =  \
 	$(OBJS)\memcheck_memcheck.obj \
 	$(OBJS)\memcheck_memcheck.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\memcheck_memcheck.obj: .\memcheck.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MEMCHECK_CXXFLAGS) $**
 
 $(OBJS)\memcheck_memcheck.res: .\memcheck.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/memcheck/makefile.wat b/samples/memcheck/makefile.wat
index bf9ce2928f..51615bd76f 100644
--- a/samples/memcheck/makefile.wat
+++ b/samples/memcheck/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\memcheck_memcheck.obj :  .AUTODEPEND .\memcheck.cpp
 	$(CXX) -zq -fo=$^@ $(MEMCHECK_CXXFLAGS) $<
 
 $(OBJS)\memcheck_memcheck.res :  .AUTODEPEND .\memcheck.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/menu/Makefile.in b/samples/menu/Makefile.in
index ca22566411..72c3c18155 100644
--- a/samples/menu/Makefile.in
+++ b/samples/menu/Makefile.in
@@ -174,7 +174,7 @@ menu_menu.o: $(srcdir)/menu.cpp
 	$(CXXC) -c -o $@ $(MENU_CXXFLAGS) $(srcdir)/menu.cpp
 
 menu_menu_rc.o: $(srcdir)/menu.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/menu/makefile.bcc b/samples/menu/makefile.bcc
index d73f298e2f..0417376771 100644
--- a/samples/menu/makefile.bcc
+++ b/samples/menu/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 MENU_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 MENU_OBJECTS =  \
 	$(OBJS)\menu_menu.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\menu_menu.obj: .\menu.cpp
 	$(CXX) -q -c -P -o$@ $(MENU_CXXFLAGS) $**
 
 $(OBJS)\menu_menu.res: .\menu.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/menu/makefile.gcc b/samples/menu/makefile.gcc
index cf1a76d9e3..7e466c74a3 100644
--- a/samples/menu/makefile.gcc
+++ b/samples/menu/makefile.gcc
@@ -22,8 +22,8 @@ SETUPHDIR = \
 MENU_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
 	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 MENU_OBJECTS =  \
 	$(OBJS)\menu_menu.o \
@@ -133,6 +133,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +213,7 @@ $(OBJS)\menu_menu.o: ./menu.cpp
 	$(CXX) -c -o $@ $(MENU_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\menu_menu_rc.o: ./menu.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/menu/makefile.vc b/samples/menu/makefile.vc
index ad38923a64..8fd78c0928 100644
--- a/samples/menu/makefile.vc
+++ b/samples/menu/makefile.vc
@@ -22,9 +22,10 @@ MENU_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\menu.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 MENU_OBJECTS =  \
 	$(OBJS)\menu_menu.obj \
 	$(OBJS)\menu_menu.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\menu_menu.obj: .\menu.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MENU_CXXFLAGS) $**
 
 $(OBJS)\menu_menu.res: .\menu.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/menu/makefile.wat b/samples/menu/makefile.wat
index 259dd560e4..f2fdaa3d21 100644
--- a/samples/menu/makefile.wat
+++ b/samples/menu/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\menu_menu.obj :  .AUTODEPEND .\menu.cpp
 	$(CXX) -zq -fo=$^@ $(MENU_CXXFLAGS) $<
 
 $(OBJS)\menu_menu.res :  .AUTODEPEND .\menu.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/mfc/Makefile.in b/samples/mfc/Makefile.in
index 765dff88d6..73c1ef3a69 100644
--- a/samples/mfc/Makefile.in
+++ b/samples/mfc/Makefile.in
@@ -176,7 +176,7 @@ mfctest_mfctest.o: $(srcdir)/mfctest.cpp
 	$(CXXC) -c -o $@ $(MFCTEST_CXXFLAGS) $(srcdir)/mfctest.cpp
 
 mfctest_mfctest_rc.o: $(srcdir)/mfctest.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/mfc/makefile.bcc b/samples/mfc/makefile.bcc
index c23eadaf77..3c19bf9878 100644
--- a/samples/mfc/makefile.bcc
+++ b/samples/mfc/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 MFCTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 MFCTEST_OBJECTS =  \
 	$(OBJS)\mfctest_mfctest.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\mfctest_mfctest.obj: .\mfctest.cpp
 	$(CXX) -q -c -P -o$@ $(MFCTEST_CXXFLAGS) $**
 
 $(OBJS)\mfctest_mfctest.res: .\mfctest.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/mfc/makefile.gcc b/samples/mfc/makefile.gcc
index 56b49f0cbe..f57f615b96 100644
--- a/samples/mfc/makefile.gcc
+++ b/samples/mfc/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 MFCTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 MFCTEST_OBJECTS =  \
 	$(OBJS)\mfctest_mfctest.o \
 	$(OBJS)\mfctest_mfctest_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\mfctest_mfctest.o: ./mfctest.cpp
 	$(CXX) -c -o $@ $(MFCTEST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\mfctest_mfctest_rc.o: ./mfctest.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/mfc/makefile.vc b/samples/mfc/makefile.vc
index f4c236e1f1..1b092ed178 100644
--- a/samples/mfc/makefile.vc
+++ b/samples/mfc/makefile.vc
@@ -22,9 +22,10 @@ MFCTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\mfctest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 MFCTEST_OBJECTS =  \
 	$(OBJS)\mfctest_mfctest.obj \
 	$(OBJS)\mfctest_mfctest.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\mfctest_mfctest.obj: .\mfctest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MFCTEST_CXXFLAGS) $**
 
 $(OBJS)\mfctest_mfctest.res: .\mfctest.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/mfc/makefile.wat b/samples/mfc/makefile.wat
index 78cceecb30..6630a8bcaa 100644
--- a/samples/mfc/makefile.wat
+++ b/samples/mfc/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\mfctest_mfctest.obj :  .AUTODEPEND .\mfctest.cpp
 	$(CXX) -zq -fo=$^@ $(MFCTEST_CXXFLAGS) $<
 
 $(OBJS)\mfctest_mfctest.res :  .AUTODEPEND .\mfctest.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/minifram/Makefile.in b/samples/minifram/Makefile.in
index adfa0e5bde..413d88ccbf 100644
--- a/samples/minifram/Makefile.in
+++ b/samples/minifram/Makefile.in
@@ -176,7 +176,7 @@ minifram_minifram.o: $(srcdir)/minifram.cpp
 	$(CXXC) -c -o $@ $(MINIFRAM_CXXFLAGS) $(srcdir)/minifram.cpp
 
 minifram_minifram_rc.o: $(srcdir)/minifram.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/minifram/makefile.bcc b/samples/minifram/makefile.bcc
index 2115721598..ddb6642fd8 100644
--- a/samples/minifram/makefile.bcc
+++ b/samples/minifram/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 MINIFRAM_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 MINIFRAM_OBJECTS =  \
 	$(OBJS)\minifram_minifram.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\minifram_minifram.obj: .\minifram.cpp
 	$(CXX) -q -c -P -o$@ $(MINIFRAM_CXXFLAGS) $**
 
 $(OBJS)\minifram_minifram.res: .\minifram.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/minifram/makefile.gcc b/samples/minifram/makefile.gcc
index d4cd354981..6b455528fb 100644
--- a/samples/minifram/makefile.gcc
+++ b/samples/minifram/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 MINIFRAM_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 MINIFRAM_OBJECTS =  \
 	$(OBJS)\minifram_minifram.o \
 	$(OBJS)\minifram_minifram_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\minifram_minifram.o: ./minifram.cpp
 	$(CXX) -c -o $@ $(MINIFRAM_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\minifram_minifram_rc.o: ./minifram.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/minifram/makefile.vc b/samples/minifram/makefile.vc
index fe469eb425..deeeb460ee 100644
--- a/samples/minifram/makefile.vc
+++ b/samples/minifram/makefile.vc
@@ -22,9 +22,10 @@ MINIFRAM_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\minifram.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 MINIFRAM_OBJECTS =  \
 	$(OBJS)\minifram_minifram.obj \
 	$(OBJS)\minifram_minifram.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\minifram_minifram.obj: .\minifram.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MINIFRAM_CXXFLAGS) $**
 
 $(OBJS)\minifram_minifram.res: .\minifram.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/minifram/makefile.wat b/samples/minifram/makefile.wat
index 942c9eeda2..5ff7de26c0 100644
--- a/samples/minifram/makefile.wat
+++ b/samples/minifram/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\minifram_minifram.obj :  .AUTODEPEND .\minifram.cpp
 	$(CXX) -zq -fo=$^@ $(MINIFRAM_CXXFLAGS) $<
 
 $(OBJS)\minifram_minifram.res :  .AUTODEPEND .\minifram.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/minimal/Makefile.in b/samples/minimal/Makefile.in
index 5ec7214158..0445362e16 100644
--- a/samples/minimal/Makefile.in
+++ b/samples/minimal/Makefile.in
@@ -173,7 +173,7 @@ minimal.app/Contents/PkgInfo: minimal$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info
 @COND_PLATFORM_MACOSX_1@minimal_bundle: $(____minimal_BUNDLE_TGT_REF_DEP)
 
 minimal_sample_rc.o: $(srcdir)/../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 minimal_minimal.o: $(srcdir)/minimal.cpp
 	$(CXXC) -c -o $@ $(MINIMAL_CXXFLAGS) $(srcdir)/minimal.cpp
diff --git a/samples/minimal/makefile.bcc b/samples/minimal/makefile.bcc
index b66bea7adf..a708f9991d 100644
--- a/samples/minimal/makefile.bcc
+++ b/samples/minimal/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 MINIMAL_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 MINIMAL_OBJECTS =  \
 	$(OBJS)\minimal_minimal.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -211,7 +218,7 @@ $(OBJS)\minimal.exe: $(MINIMAL_OBJECTS)  $(OBJS)\minimal_sample.res
 |
 
 $(OBJS)\minimal_sample.res: .\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
 
 $(OBJS)\minimal_minimal.obj: .\minimal.cpp
 	$(CXX) -q -c -P -o$@ $(MINIMAL_CXXFLAGS) $**
diff --git a/samples/minimal/makefile.gcc b/samples/minimal/makefile.gcc
index 65535fd067..38cdb5e8dc 100644
--- a/samples/minimal/makefile.gcc
+++ b/samples/minimal/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 MINIMAL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 MINIMAL_OBJECTS =  \
 	$(OBJS)\minimal_sample_rc.o \
 	$(OBJS)\minimal_minimal.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -204,7 +211,7 @@ $(OBJS)\minimal.exe: $(MINIMAL_OBJECTS) $(OBJS)\minimal_sample_rc.o
 	$(CXX) -o $@ $(MINIMAL_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\minimal_sample_rc.o: ./../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
 
 $(OBJS)\minimal_minimal.o: ./minimal.cpp
 	$(CXX) -c -o $@ $(MINIMAL_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/minimal/makefile.vc b/samples/minimal/makefile.vc
index 87d047aaad..99231d9ec4 100644
--- a/samples/minimal/makefile.vc
+++ b/samples/minimal/makefile.vc
@@ -22,9 +22,10 @@ MINIMAL_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\minimal.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 MINIMAL_OBJECTS =  \
 	$(OBJS)\minimal_sample.res \
 	$(OBJS)\minimal_minimal.obj
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -262,7 +269,7 @@ $(OBJS)\minimal.exe: $(MINIMAL_OBJECTS) $(OBJS)\minimal_sample.res
 <<
 
 $(OBJS)\minimal_sample.res: .\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
 
 $(OBJS)\minimal_minimal.obj: .\minimal.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MINIMAL_CXXFLAGS) $**
diff --git a/samples/minimal/makefile.wat b/samples/minimal/makefile.wat
index ba7a2b4f30..d8b08bb13e 100644
--- a/samples/minimal/makefile.wat
+++ b/samples/minimal/makefile.wat
@@ -245,7 +245,7 @@ $(OBJS)\minimal.exe :  $(MINIMAL_OBJECTS) $(OBJS)\minimal_sample.res
 	wlink @$(OBJS)\minimal.lbc
 
 $(OBJS)\minimal_sample.res :  .AUTODEPEND .\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
 
 $(OBJS)\minimal_minimal.obj :  .AUTODEPEND .\minimal.cpp
 	$(CXX) -zq -fo=$^@ $(MINIMAL_CXXFLAGS) $<
diff --git a/samples/mobile/styles/Makefile.in b/samples/mobile/styles/Makefile.in
index 7a19cc91cf..8d718c8a66 100644
--- a/samples/mobile/styles/Makefile.in
+++ b/samples/mobile/styles/Makefile.in
@@ -186,7 +186,7 @@ data:
 	done
 
 styles_sample_rc.o: $(srcdir)/../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 styles_styles.o: $(srcdir)/styles.cpp
 	$(CXXC) -c -o $@ $(STYLES_CXXFLAGS) $(srcdir)/styles.cpp
diff --git a/samples/mobile/styles/makefile.bcc b/samples/mobile/styles/makefile.bcc
index d28e21cc8b..8aa799bb05 100644
--- a/samples/mobile/styles/makefile.bcc
+++ b/samples/mobile/styles/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 STYLES_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 STYLES_OBJECTS =  \
 	$(OBJS)\styles_styles.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -216,7 +222,7 @@ data:
 	for %f in (marble.jpg) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\styles_sample.res: .\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
 
 $(OBJS)\styles_styles.obj: .\styles.cpp
 	$(CXX) -q -c -P -o$@ $(STYLES_CXXFLAGS) $**
diff --git a/samples/mobile/styles/makefile.gcc b/samples/mobile/styles/makefile.gcc
index 78e8ca5417..e41166182b 100644
--- a/samples/mobile/styles/makefile.gcc
+++ b/samples/mobile/styles/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 STYLES_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 STYLES_OBJECTS =  \
 	$(OBJS)\styles_sample_rc.o \
 	$(OBJS)\styles_styles.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -209,7 +215,7 @@ data:
 	for %%f in (marble.jpg) do if not exist $(OBJS)\%%f copy .\%%f $(OBJS)
 
 $(OBJS)\styles_sample_rc.o: ./../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
 
 $(OBJS)\styles_styles.o: ./styles.cpp
 	$(CXX) -c -o $@ $(STYLES_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/mobile/styles/makefile.vc b/samples/mobile/styles/makefile.vc
index adca12cfe9..e4682bac08 100644
--- a/samples/mobile/styles/makefile.vc
+++ b/samples/mobile/styles/makefile.vc
@@ -22,9 +22,10 @@ STYLES_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\styles.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 STYLES_OBJECTS =  \
 	$(OBJS)\styles_sample.res \
 	$(OBJS)\styles_styles.obj
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -266,7 +273,7 @@ data:
 	for %f in (marble.jpg) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\styles_sample.res: .\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
 
 $(OBJS)\styles_styles.obj: .\styles.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(STYLES_CXXFLAGS) $**
diff --git a/samples/mobile/styles/makefile.wat b/samples/mobile/styles/makefile.wat
index b866d8bbdb..1514fa8f1c 100644
--- a/samples/mobile/styles/makefile.wat
+++ b/samples/mobile/styles/makefile.wat
@@ -249,7 +249,7 @@ data : .SYMBOLIC
 	for %f in (marble.jpg) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\styles_sample.res :  .AUTODEPEND .\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
 
 $(OBJS)\styles_styles.obj :  .AUTODEPEND .\styles.cpp
 	$(CXX) -zq -fo=$^@ $(STYLES_CXXFLAGS) $<
diff --git a/samples/mobile/wxedit/Makefile.in b/samples/mobile/wxedit/Makefile.in
index cd5c28383e..2854269723 100644
--- a/samples/mobile/wxedit/Makefile.in
+++ b/samples/mobile/wxedit/Makefile.in
@@ -174,7 +174,7 @@ wxedit.app/Contents/PkgInfo: wxedit$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info.p
 @COND_PLATFORM_MACOSX_1@wxedit_bundle: $(____wxedit_BUNDLE_TGT_REF_DEP)
 
 wxedit_sample_rc.o: $(srcdir)/../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 wxedit_wxedit.o: $(srcdir)/wxedit.cpp
 	$(CXXC) -c -o $@ $(WXEDIT_CXXFLAGS) $(srcdir)/wxedit.cpp
diff --git a/samples/mobile/wxedit/makefile.bcc b/samples/mobile/wxedit/makefile.bcc
index 4e8aaf6db6..5f04636494 100644
--- a/samples/mobile/wxedit/makefile.bcc
+++ b/samples/mobile/wxedit/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 WXEDIT_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 WXEDIT_OBJECTS =  \
 	$(OBJS)\wxedit_wxedit.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -212,7 +218,7 @@ $(OBJS)\wxedit.exe: $(WXEDIT_OBJECTS)  $(OBJS)\wxedit_sample.res
 |
 
 $(OBJS)\wxedit_sample.res: .\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
 
 $(OBJS)\wxedit_wxedit.obj: .\wxedit.cpp
 	$(CXX) -q -c -P -o$@ $(WXEDIT_CXXFLAGS) $**
diff --git a/samples/mobile/wxedit/makefile.gcc b/samples/mobile/wxedit/makefile.gcc
index eec37601cd..13cb4e2671 100644
--- a/samples/mobile/wxedit/makefile.gcc
+++ b/samples/mobile/wxedit/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 WXEDIT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 WXEDIT_OBJECTS =  \
 	$(OBJS)\wxedit_sample_rc.o \
 	$(OBJS)\wxedit_wxedit.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -205,7 +211,7 @@ $(OBJS)\wxedit.exe: $(WXEDIT_OBJECTS) $(OBJS)\wxedit_sample_rc.o
 	$(CXX) -o $@ $(WXEDIT_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\wxedit_sample_rc.o: ./../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
 
 $(OBJS)\wxedit_wxedit.o: ./wxedit.cpp
 	$(CXX) -c -o $@ $(WXEDIT_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/mobile/wxedit/makefile.vc b/samples/mobile/wxedit/makefile.vc
index a1aa7d34c6..1434e358a9 100644
--- a/samples/mobile/wxedit/makefile.vc
+++ b/samples/mobile/wxedit/makefile.vc
@@ -22,9 +22,10 @@ WXEDIT_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\wxedit.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 WXEDIT_OBJECTS =  \
 	$(OBJS)\wxedit_sample.res \
 	$(OBJS)\wxedit_wxedit.obj
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -262,7 +269,7 @@ $(OBJS)\wxedit.exe: $(WXEDIT_OBJECTS) $(OBJS)\wxedit_sample.res
 <<
 
 $(OBJS)\wxedit_sample.res: .\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
 
 $(OBJS)\wxedit_wxedit.obj: .\wxedit.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(WXEDIT_CXXFLAGS) $**
diff --git a/samples/mobile/wxedit/makefile.wat b/samples/mobile/wxedit/makefile.wat
index 163c2ed2dd..051c553381 100644
--- a/samples/mobile/wxedit/makefile.wat
+++ b/samples/mobile/wxedit/makefile.wat
@@ -245,7 +245,7 @@ $(OBJS)\wxedit.exe :  $(WXEDIT_OBJECTS) $(OBJS)\wxedit_sample.res
 	wlink @$(OBJS)\wxedit.lbc
 
 $(OBJS)\wxedit_sample.res :  .AUTODEPEND .\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
 
 $(OBJS)\wxedit_wxedit.obj :  .AUTODEPEND .\wxedit.cpp
 	$(CXX) -zq -fo=$^@ $(WXEDIT_CXXFLAGS) $<
diff --git a/samples/multimon/Makefile.in b/samples/multimon/Makefile.in
index f7bb7f19e2..3e8aa26de4 100644
--- a/samples/multimon/Makefile.in
+++ b/samples/multimon/Makefile.in
@@ -177,7 +177,7 @@ multimon_test.app/Contents/PkgInfo: multimon_test$(EXEEXT) $(top_srcdir)/src/mac
 @COND_PLATFORM_MACOSX_1@multimon_test_bundle: $(____multimon_test_BUNDLE_TGT_REF_DEP)
 
 multimon_test_sample_rc.o: $(srcdir)/../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 multimon_test_multimon_test.o: $(srcdir)/multimon_test.cpp
 	$(CXXC) -c -o $@ $(MULTIMON_TEST_CXXFLAGS) $(srcdir)/multimon_test.cpp
diff --git a/samples/multimon/makefile.bcc b/samples/multimon/makefile.bcc
index d2b60897ea..64e23292cb 100644
--- a/samples/multimon/makefile.bcc
+++ b/samples/multimon/makefile.bcc
@@ -31,8 +31,8 @@ MULTIMON_TEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include \
 	$(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 MULTIMON_TEST_OBJECTS =  \
 	$(OBJS)\multimon_test_multimon_test.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -212,7 +218,7 @@ $(OBJS)\multimon_test.exe: $(MULTIMON_TEST_OBJECTS)  $(OBJS)\multimon_test_sampl
 |
 
 $(OBJS)\multimon_test_sample.res: .\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
 
 $(OBJS)\multimon_test_multimon_test.obj: .\multimon_test.cpp
 	$(CXX) -q -c -P -o$@ $(MULTIMON_TEST_CXXFLAGS) $**
diff --git a/samples/multimon/makefile.gcc b/samples/multimon/makefile.gcc
index 031cd38c4a..8c64b6ff19 100644
--- a/samples/multimon/makefile.gcc
+++ b/samples/multimon/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 MULTIMON_TEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 MULTIMON_TEST_OBJECTS =  \
 	$(OBJS)\multimon_test_sample_rc.o \
 	$(OBJS)\multimon_test_multimon_test.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -204,7 +211,7 @@ $(OBJS)\multimon_test.exe: $(MULTIMON_TEST_OBJECTS) $(OBJS)\multimon_test_sample
 	$(CXX) -o $@ $(MULTIMON_TEST_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\multimon_test_sample_rc.o: ./../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
 
 $(OBJS)\multimon_test_multimon_test.o: ./multimon_test.cpp
 	$(CXX) -c -o $@ $(MULTIMON_TEST_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/multimon/makefile.vc b/samples/multimon/makefile.vc
index 80f9194f85..b9a91daadc 100644
--- a/samples/multimon/makefile.vc
+++ b/samples/multimon/makefile.vc
@@ -22,9 +22,10 @@ MULTIMON_TEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\multimon_test.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 MULTIMON_TEST_OBJECTS =  \
 	$(OBJS)\multimon_test_sample.res \
 	$(OBJS)\multimon_test_multimon_test.obj
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -262,7 +269,7 @@ $(OBJS)\multimon_test.exe: $(MULTIMON_TEST_OBJECTS) $(OBJS)\multimon_test_sample
 <<
 
 $(OBJS)\multimon_test_sample.res: .\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
 
 $(OBJS)\multimon_test_multimon_test.obj: .\multimon_test.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MULTIMON_TEST_CXXFLAGS) $**
diff --git a/samples/multimon/makefile.wat b/samples/multimon/makefile.wat
index 7b991e6bb8..ca4c752156 100644
--- a/samples/multimon/makefile.wat
+++ b/samples/multimon/makefile.wat
@@ -246,7 +246,7 @@ $(OBJS)\multimon_test.exe :  $(MULTIMON_TEST_OBJECTS) $(OBJS)\multimon_test_samp
 	wlink @$(OBJS)\multimon_test.lbc
 
 $(OBJS)\multimon_test_sample.res :  .AUTODEPEND .\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
 
 $(OBJS)\multimon_test_multimon_test.obj :  .AUTODEPEND .\multimon_test.cpp
 	$(CXX) -zq -fo=$^@ $(MULTIMON_TEST_CXXFLAGS) $<
diff --git a/samples/nativdlg/Makefile.in b/samples/nativdlg/Makefile.in
index 57e6325e89..a7e514d448 100644
--- a/samples/nativdlg/Makefile.in
+++ b/samples/nativdlg/Makefile.in
@@ -176,7 +176,7 @@ nativdlg_nativdlg.o: $(srcdir)/nativdlg.cpp
 	$(CXXC) -c -o $@ $(NATIVDLG_CXXFLAGS) $(srcdir)/nativdlg.cpp
 
 nativdlg_nativdlg_rc.o: $(srcdir)/nativdlg.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/nativdlg/makefile.bcc b/samples/nativdlg/makefile.bcc
index 37bbef8a00..f01e4f223f 100644
--- a/samples/nativdlg/makefile.bcc
+++ b/samples/nativdlg/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 NATIVDLG_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 NATIVDLG_OBJECTS =  \
 	$(OBJS)\nativdlg_nativdlg.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\nativdlg_nativdlg.obj: .\nativdlg.cpp
 	$(CXX) -q -c -P -o$@ $(NATIVDLG_CXXFLAGS) $**
 
 $(OBJS)\nativdlg_nativdlg.res: .\nativdlg.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/nativdlg/makefile.gcc b/samples/nativdlg/makefile.gcc
index 0e46d2b96c..f341da91f1 100644
--- a/samples/nativdlg/makefile.gcc
+++ b/samples/nativdlg/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 NATIVDLG_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 NATIVDLG_OBJECTS =  \
 	$(OBJS)\nativdlg_nativdlg.o \
 	$(OBJS)\nativdlg_nativdlg_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\nativdlg_nativdlg.o: ./nativdlg.cpp
 	$(CXX) -c -o $@ $(NATIVDLG_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\nativdlg_nativdlg_rc.o: ./nativdlg.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/nativdlg/makefile.vc b/samples/nativdlg/makefile.vc
index b7d6d999c8..1abaf4f245 100644
--- a/samples/nativdlg/makefile.vc
+++ b/samples/nativdlg/makefile.vc
@@ -22,9 +22,10 @@ NATIVDLG_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\nativdlg.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 NATIVDLG_OBJECTS =  \
 	$(OBJS)\nativdlg_nativdlg.obj \
 	$(OBJS)\nativdlg_nativdlg.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\nativdlg_nativdlg.obj: .\nativdlg.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(NATIVDLG_CXXFLAGS) $**
 
 $(OBJS)\nativdlg_nativdlg.res: .\nativdlg.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/nativdlg/makefile.wat b/samples/nativdlg/makefile.wat
index 70a8ad7b6c..083a2c0300 100644
--- a/samples/nativdlg/makefile.wat
+++ b/samples/nativdlg/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\nativdlg_nativdlg.obj :  .AUTODEPEND .\nativdlg.cpp
 	$(CXX) -zq -fo=$^@ $(NATIVDLG_CXXFLAGS) $<
 
 $(OBJS)\nativdlg_nativdlg.res :  .AUTODEPEND .\nativdlg.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/notebook/Makefile.in b/samples/notebook/Makefile.in
index b1cc43ffa6..9babb8ddd3 100644
--- a/samples/notebook/Makefile.in
+++ b/samples/notebook/Makefile.in
@@ -173,7 +173,7 @@ notebook.app/Contents/PkgInfo: notebook$(EXEEXT) $(top_srcdir)/src/mac/carbon/In
 @COND_PLATFORM_MACOSX_1@notebook_bundle: $(____notebook_BUNDLE_TGT_REF_DEP)
 
 notebook_sample_rc.o: $(srcdir)/../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 notebook_notebook.o: $(srcdir)/notebook.cpp
 	$(CXXC) -c -o $@ $(NOTEBOOK_CXXFLAGS) $(srcdir)/notebook.cpp
diff --git a/samples/notebook/makefile.bcc b/samples/notebook/makefile.bcc
index 670f7a6577..c100886c3e 100644
--- a/samples/notebook/makefile.bcc
+++ b/samples/notebook/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 NOTEBOOK_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 NOTEBOOK_OBJECTS =  \
 	$(OBJS)\notebook_notebook.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -211,7 +218,7 @@ $(OBJS)\notebook.exe: $(NOTEBOOK_OBJECTS)  $(OBJS)\notebook_sample.res
 |
 
 $(OBJS)\notebook_sample.res: .\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
 
 $(OBJS)\notebook_notebook.obj: .\notebook.cpp
 	$(CXX) -q -c -P -o$@ $(NOTEBOOK_CXXFLAGS) $**
diff --git a/samples/notebook/makefile.gcc b/samples/notebook/makefile.gcc
index 3bd7cdb7fe..ef59989a5f 100644
--- a/samples/notebook/makefile.gcc
+++ b/samples/notebook/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 NOTEBOOK_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 NOTEBOOK_OBJECTS =  \
 	$(OBJS)\notebook_sample_rc.o \
 	$(OBJS)\notebook_notebook.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -204,7 +211,7 @@ $(OBJS)\notebook.exe: $(NOTEBOOK_OBJECTS) $(OBJS)\notebook_sample_rc.o
 	$(CXX) -o $@ $(NOTEBOOK_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\notebook_sample_rc.o: ./../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
 
 $(OBJS)\notebook_notebook.o: ./notebook.cpp
 	$(CXX) -c -o $@ $(NOTEBOOK_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/notebook/makefile.vc b/samples/notebook/makefile.vc
index 4eb5307314..9d6391ba83 100644
--- a/samples/notebook/makefile.vc
+++ b/samples/notebook/makefile.vc
@@ -22,9 +22,10 @@ NOTEBOOK_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\notebook.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 NOTEBOOK_OBJECTS =  \
 	$(OBJS)\notebook_sample.res \
 	$(OBJS)\notebook_notebook.obj
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -262,7 +269,7 @@ $(OBJS)\notebook.exe: $(NOTEBOOK_OBJECTS) $(OBJS)\notebook_sample.res
 <<
 
 $(OBJS)\notebook_sample.res: .\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
 
 $(OBJS)\notebook_notebook.obj: .\notebook.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(NOTEBOOK_CXXFLAGS) $**
diff --git a/samples/notebook/makefile.wat b/samples/notebook/makefile.wat
index f8896458ea..dc81e0f489 100644
--- a/samples/notebook/makefile.wat
+++ b/samples/notebook/makefile.wat
@@ -245,7 +245,7 @@ $(OBJS)\notebook.exe :  $(NOTEBOOK_OBJECTS) $(OBJS)\notebook_sample.res
 	wlink @$(OBJS)\notebook.lbc
 
 $(OBJS)\notebook_sample.res :  .AUTODEPEND .\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
 
 $(OBJS)\notebook_notebook.obj :  .AUTODEPEND .\notebook.cpp
 	$(CXX) -zq -fo=$^@ $(NOTEBOOK_CXXFLAGS) $<
diff --git a/samples/oleauto/Makefile.in b/samples/oleauto/Makefile.in
index 9b8b932396..cb2b567ed6 100644
--- a/samples/oleauto/Makefile.in
+++ b/samples/oleauto/Makefile.in
@@ -176,7 +176,7 @@ oleauto_oleauto.o: $(srcdir)/oleauto.cpp
 	$(CXXC) -c -o $@ $(OLEAUTO_CXXFLAGS) $(srcdir)/oleauto.cpp
 
 oleauto_oleauto_rc.o: $(srcdir)/oleauto.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/oleauto/makefile.bcc b/samples/oleauto/makefile.bcc
index a019c8a436..7152d6afad 100644
--- a/samples/oleauto/makefile.bcc
+++ b/samples/oleauto/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 OLEAUTO_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 OLEAUTO_OBJECTS =  \
 	$(OBJS)\oleauto_oleauto.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\oleauto_oleauto.obj: .\oleauto.cpp
 	$(CXX) -q -c -P -o$@ $(OLEAUTO_CXXFLAGS) $**
 
 $(OBJS)\oleauto_oleauto.res: .\oleauto.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/oleauto/makefile.gcc b/samples/oleauto/makefile.gcc
index 9adc8d2d68..72ef30ccaf 100644
--- a/samples/oleauto/makefile.gcc
+++ b/samples/oleauto/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 OLEAUTO_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 OLEAUTO_OBJECTS =  \
 	$(OBJS)\oleauto_oleauto.o \
 	$(OBJS)\oleauto_oleauto_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\oleauto_oleauto.o: ./oleauto.cpp
 	$(CXX) -c -o $@ $(OLEAUTO_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\oleauto_oleauto_rc.o: ./oleauto.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/oleauto/makefile.vc b/samples/oleauto/makefile.vc
index 0df030bfe7..5b5b20fb94 100644
--- a/samples/oleauto/makefile.vc
+++ b/samples/oleauto/makefile.vc
@@ -22,9 +22,10 @@ OLEAUTO_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\oleauto.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 OLEAUTO_OBJECTS =  \
 	$(OBJS)\oleauto_oleauto.obj \
 	$(OBJS)\oleauto_oleauto.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\oleauto_oleauto.obj: .\oleauto.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(OLEAUTO_CXXFLAGS) $**
 
 $(OBJS)\oleauto_oleauto.res: .\oleauto.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/oleauto/makefile.wat b/samples/oleauto/makefile.wat
index bcc35eaffb..64ea4ade7b 100644
--- a/samples/oleauto/makefile.wat
+++ b/samples/oleauto/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\oleauto_oleauto.obj :  .AUTODEPEND .\oleauto.cpp
 	$(CXX) -zq -fo=$^@ $(OLEAUTO_CXXFLAGS) $<
 
 $(OBJS)\oleauto_oleauto.res :  .AUTODEPEND .\oleauto.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/opengl/cube/Makefile.in b/samples/opengl/cube/Makefile.in
index 6116af65a7..ca8dc1225a 100644
--- a/samples/opengl/cube/Makefile.in
+++ b/samples/opengl/cube/Makefile.in
@@ -177,7 +177,7 @@ cube_cube.o: $(srcdir)/cube.cpp
 	$(CXXC) -c -o $@ $(CUBE_CXXFLAGS) $(srcdir)/cube.cpp
 
 cube_cube_rc.o: $(srcdir)/cube.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/opengl/cube/makefile.bcc b/samples/opengl/cube/makefile.bcc
index 35dbb7085b..db76b8d9e1 100644
--- a/samples/opengl/cube/makefile.bcc
+++ b/samples/opengl/cube/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 CUBE_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 CUBE_OBJECTS =  \
 	$(OBJS)\cube_cube.obj
 
@@ -146,6 +146,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -220,5 +226,5 @@ $(OBJS)\cube_cube.obj: .\cube.cpp
 	$(CXX) -q -c -P -o$@ $(CUBE_CXXFLAGS) $**
 
 $(OBJS)\cube_cube.res: .\cube.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
 
diff --git a/samples/opengl/cube/makefile.gcc b/samples/opengl/cube/makefile.gcc
index 00f1cda4fa..734fd18e28 100644
--- a/samples/opengl/cube/makefile.gcc
+++ b/samples/opengl/cube/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 CUBE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\..\include \
+	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
+	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 CUBE_OBJECTS =  \
 	$(OBJS)\cube_cube.o \
 	$(OBJS)\cube_cube_rc.o
@@ -136,6 +137,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -212,7 +219,7 @@ $(OBJS)\cube_cube.o: ./cube.cpp
 	$(CXX) -c -o $@ $(CUBE_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\cube_cube_rc.o: ./cube.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/opengl/cube/makefile.vc b/samples/opengl/cube/makefile.vc
index e50de9ad9f..85cc23269d 100644
--- a/samples/opengl/cube/makefile.vc
+++ b/samples/opengl/cube/makefile.vc
@@ -22,9 +22,10 @@ CUBE_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\cube.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 CUBE_OBJECTS =  \
 	$(OBJS)\cube_cube.obj \
 	$(OBJS)\cube_cube.res
@@ -211,6 +212,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -270,5 +277,5 @@ $(OBJS)\cube_cube.obj: .\cube.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(CUBE_CXXFLAGS) $**
 
 $(OBJS)\cube_cube.res: .\cube.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
 
diff --git a/samples/opengl/cube/makefile.wat b/samples/opengl/cube/makefile.wat
index 1323d14396..fa5a8c7c5c 100644
--- a/samples/opengl/cube/makefile.wat
+++ b/samples/opengl/cube/makefile.wat
@@ -254,5 +254,5 @@ $(OBJS)\cube_cube.obj :  .AUTODEPEND .\cube.cpp
 	$(CXX) -zq -fo=$^@ $(CUBE_CXXFLAGS) $<
 
 $(OBJS)\cube_cube.res :  .AUTODEPEND .\cube.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
 
diff --git a/samples/opengl/isosurf/Makefile.in b/samples/opengl/isosurf/Makefile.in
index 633b1abbe9..d40f9941ad 100644
--- a/samples/opengl/isosurf/Makefile.in
+++ b/samples/opengl/isosurf/Makefile.in
@@ -188,7 +188,7 @@ data:
 	done
 
 isosurf_sample_rc.o: $(srcdir)/../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 isosurf_isosurf.o: $(srcdir)/isosurf.cpp
 	$(CXXC) -c -o $@ $(ISOSURF_CXXFLAGS) $(srcdir)/isosurf.cpp
diff --git a/samples/opengl/isosurf/makefile.bcc b/samples/opengl/isosurf/makefile.bcc
index fcd6d935a6..9d02930081 100644
--- a/samples/opengl/isosurf/makefile.bcc
+++ b/samples/opengl/isosurf/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 ISOSURF_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 ISOSURF_OBJECTS =  \
 	$(OBJS)\isosurf_isosurf.obj
 
@@ -146,6 +146,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -221,7 +227,7 @@ data:
 	for %f in (isosurf.dat.gz) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\isosurf_sample.res: .\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
 
 $(OBJS)\isosurf_isosurf.obj: .\isosurf.cpp
 	$(CXX) -q -c -P -o$@ $(ISOSURF_CXXFLAGS) $**
diff --git a/samples/opengl/isosurf/makefile.gcc b/samples/opengl/isosurf/makefile.gcc
index a9e827106d..c722b26959 100644
--- a/samples/opengl/isosurf/makefile.gcc
+++ b/samples/opengl/isosurf/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 ISOSURF_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 ISOSURF_OBJECTS =  \
 	$(OBJS)\isosurf_sample_rc.o \
 	$(OBJS)\isosurf_isosurf.o
@@ -137,6 +137,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -214,7 +220,7 @@ data:
 	for %%f in (isosurf.dat.gz) do if not exist $(OBJS)\%%f copy .\%%f $(OBJS)
 
 $(OBJS)\isosurf_sample_rc.o: ./../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
 
 $(OBJS)\isosurf_isosurf.o: ./isosurf.cpp
 	$(CXX) -c -o $@ $(ISOSURF_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/opengl/isosurf/makefile.vc b/samples/opengl/isosurf/makefile.vc
index 0cb8bec846..2ec14568d7 100644
--- a/samples/opengl/isosurf/makefile.vc
+++ b/samples/opengl/isosurf/makefile.vc
@@ -22,9 +22,10 @@ ISOSURF_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\isosurf.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 ISOSURF_OBJECTS =  \
 	$(OBJS)\isosurf_sample.res \
 	$(OBJS)\isosurf_isosurf.obj
@@ -211,6 +212,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -271,7 +278,7 @@ data:
 	for %f in (isosurf.dat.gz) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\isosurf_sample.res: .\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
 
 $(OBJS)\isosurf_isosurf.obj: .\isosurf.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(ISOSURF_CXXFLAGS) $**
diff --git a/samples/opengl/isosurf/makefile.wat b/samples/opengl/isosurf/makefile.wat
index 37b5f5eaed..3e5496f34e 100644
--- a/samples/opengl/isosurf/makefile.wat
+++ b/samples/opengl/isosurf/makefile.wat
@@ -255,7 +255,7 @@ data : .SYMBOLIC
 	for %f in (isosurf.dat.gz) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\isosurf_sample.res :  .AUTODEPEND .\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
 
 $(OBJS)\isosurf_isosurf.obj :  .AUTODEPEND .\isosurf.cpp
 	$(CXX) -zq -fo=$^@ $(ISOSURF_CXXFLAGS) $<
diff --git a/samples/opengl/penguin/Makefile.in b/samples/opengl/penguin/Makefile.in
index 38815f58e0..a185a3ad6a 100644
--- a/samples/opengl/penguin/Makefile.in
+++ b/samples/opengl/penguin/Makefile.in
@@ -207,7 +207,7 @@ penguin_trackball.o: $(srcdir)/trackball.c
 	$(CCC) -c -o $@ $(PENGUIN_CFLAGS) $(srcdir)/trackball.c
 
 penguin_penguin_rc.o: $(srcdir)/penguin.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/opengl/penguin/makefile.bcc b/samples/opengl/penguin/makefile.bcc
index 4dbe2771d4..402bee5bd7 100644
--- a/samples/opengl/penguin/makefile.bcc
+++ b/samples/opengl/penguin/makefile.bcc
@@ -30,15 +30,15 @@ SETUPHDIR = \
 PENGUIN_CFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CFLAGS)
 PENGUIN_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 PENGUIN_OBJECTS =  \
 	$(OBJS)\penguin_penguin.obj \
 	$(OBJS)\penguin_lw.obj \
@@ -154,6 +154,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -238,5 +244,5 @@ $(OBJS)\penguin_trackball.obj: .\trackball.c
 	$(CC) -q -c -P- -o$@ $(PENGUIN_CFLAGS) $**
 
 $(OBJS)\penguin_penguin.res: .\penguin.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
 
diff --git a/samples/opengl/penguin/makefile.gcc b/samples/opengl/penguin/makefile.gcc
index dbe09f1d67..ee6f9eec4d 100644
--- a/samples/opengl/penguin/makefile.gcc
+++ b/samples/opengl/penguin/makefile.gcc
@@ -22,16 +22,16 @@ SETUPHDIR = \
 PENGUIN_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	$(CPPFLAGS) $(CFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(CPPFLAGS) $(CFLAGS)
 PENGUIN_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 PENGUIN_OBJECTS =  \
 	$(OBJS)\penguin_penguin.o \
 	$(OBJS)\penguin_lw.o \
@@ -145,6 +145,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -231,7 +237,7 @@ $(OBJS)\penguin_trackball.o: ./trackball.c
 	$(CC) -c -o $@ $(PENGUIN_CFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\penguin_penguin_rc.o: ./penguin.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/opengl/penguin/makefile.vc b/samples/opengl/penguin/makefile.vc
index 53cfc2ef0c..14014fc77b 100644
--- a/samples/opengl/penguin/makefile.vc
+++ b/samples/opengl/penguin/makefile.vc
@@ -22,16 +22,17 @@ PENGUIN_CFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\penguin.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(CPPFLAGS) $(CFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(CPPFLAGS) $(CFLAGS)
 PENGUIN_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\penguin.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 PENGUIN_OBJECTS =  \
 	$(OBJS)\penguin_penguin.obj \
 	$(OBJS)\penguin_lw.obj \
@@ -220,6 +221,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -289,5 +296,5 @@ $(OBJS)\penguin_trackball.obj: .\trackball.c
 	$(CC) /c /nologo /TC /Fo$@ $(PENGUIN_CFLAGS) $**
 
 $(OBJS)\penguin_penguin.res: .\penguin.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
 
diff --git a/samples/opengl/penguin/makefile.wat b/samples/opengl/penguin/makefile.wat
index c4735a0144..3c3b5c3eaf 100644
--- a/samples/opengl/penguin/makefile.wat
+++ b/samples/opengl/penguin/makefile.wat
@@ -272,5 +272,5 @@ $(OBJS)\penguin_trackball.obj :  .AUTODEPEND .\trackball.c
 	$(CC) -zq -fo=$^@ $(PENGUIN_CFLAGS) $<
 
 $(OBJS)\penguin_penguin.res :  .AUTODEPEND .\penguin.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
 
diff --git a/samples/ownerdrw/Makefile.in b/samples/ownerdrw/Makefile.in
index d3b859e372..496b93adba 100644
--- a/samples/ownerdrw/Makefile.in
+++ b/samples/ownerdrw/Makefile.in
@@ -188,7 +188,7 @@ ownerdrw_ownerdrw.o: $(srcdir)/ownerdrw.cpp
 	$(CXXC) -c -o $@ $(OWNERDRW_CXXFLAGS) $(srcdir)/ownerdrw.cpp
 
 ownerdrw_ownerdrw_rc.o: $(srcdir)/ownerdrw.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/ownerdrw/makefile.bcc b/samples/ownerdrw/makefile.bcc
index 2a635af518..1aea1c4839 100644
--- a/samples/ownerdrw/makefile.bcc
+++ b/samples/ownerdrw/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 OWNERDRW_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 OWNERDRW_OBJECTS =  \
 	$(OBJS)\ownerdrw_ownerdrw.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\ownerdrw_ownerdrw.obj: .\ownerdrw.cpp
 	$(CXX) -q -c -P -o$@ $(OWNERDRW_CXXFLAGS) $**
 
 $(OBJS)\ownerdrw_ownerdrw.res: .\ownerdrw.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/ownerdrw/makefile.gcc b/samples/ownerdrw/makefile.gcc
index 6e6d2fa7b7..5dba4fecb1 100644
--- a/samples/ownerdrw/makefile.gcc
+++ b/samples/ownerdrw/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 OWNERDRW_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 OWNERDRW_OBJECTS =  \
 	$(OBJS)\ownerdrw_ownerdrw.o \
 	$(OBJS)\ownerdrw_ownerdrw_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +218,7 @@ $(OBJS)\ownerdrw_ownerdrw.o: ./ownerdrw.cpp
 	$(CXX) -c -o $@ $(OWNERDRW_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\ownerdrw_ownerdrw_rc.o: ./ownerdrw.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/ownerdrw/makefile.vc b/samples/ownerdrw/makefile.vc
index 8d38a2beca..d3b6f85879 100644
--- a/samples/ownerdrw/makefile.vc
+++ b/samples/ownerdrw/makefile.vc
@@ -22,9 +22,10 @@ OWNERDRW_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\ownerdrw.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 OWNERDRW_OBJECTS =  \
 	$(OBJS)\ownerdrw_ownerdrw.obj \
 	$(OBJS)\ownerdrw_ownerdrw.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\ownerdrw_ownerdrw.obj: .\ownerdrw.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(OWNERDRW_CXXFLAGS) $**
 
 $(OBJS)\ownerdrw_ownerdrw.res: .\ownerdrw.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/ownerdrw/makefile.wat b/samples/ownerdrw/makefile.wat
index 39c3c4e355..71fa0f7ed5 100644
--- a/samples/ownerdrw/makefile.wat
+++ b/samples/ownerdrw/makefile.wat
@@ -252,5 +252,5 @@ $(OBJS)\ownerdrw_ownerdrw.obj :  .AUTODEPEND .\ownerdrw.cpp
 	$(CXX) -zq -fo=$^@ $(OWNERDRW_CXXFLAGS) $<
 
 $(OBJS)\ownerdrw_ownerdrw.res :  .AUTODEPEND .\ownerdrw.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/png/Makefile.in b/samples/png/Makefile.in
index a2f08ac5ca..436a6083b8 100644
--- a/samples/png/Makefile.in
+++ b/samples/png/Makefile.in
@@ -173,7 +173,7 @@ png_pngdemo.o: $(srcdir)/pngdemo.cpp
 	$(CXXC) -c -o $@ $(PNG_CXXFLAGS) $(srcdir)/pngdemo.cpp
 
 png_pngdemo_rc.o: $(srcdir)/pngdemo.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/png/makefile.bcc b/samples/png/makefile.bcc
index acc47bf954..fd6d5d6c32 100644
--- a/samples/png/makefile.bcc
+++ b/samples/png/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 PNG_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 PNG_OBJECTS =  \
 	$(OBJS)\png_pngdemo.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\png_pngdemo.obj: .\pngdemo.cpp
 	$(CXX) -q -c -P -o$@ $(PNG_CXXFLAGS) $**
 
 $(OBJS)\png_pngdemo.res: .\pngdemo.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/png/makefile.gcc b/samples/png/makefile.gcc
index 9f89876888..9e5e71555e 100644
--- a/samples/png/makefile.gcc
+++ b/samples/png/makefile.gcc
@@ -22,8 +22,8 @@ SETUPHDIR = \
 PNG_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
 	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 PNG_OBJECTS =  \
 	$(OBJS)\png_pngdemo.o \
@@ -133,6 +133,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +213,7 @@ $(OBJS)\png_pngdemo.o: ./pngdemo.cpp
 	$(CXX) -c -o $@ $(PNG_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\png_pngdemo_rc.o: ./pngdemo.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/png/makefile.vc b/samples/png/makefile.vc
index 0671c73a16..f99e511ba6 100644
--- a/samples/png/makefile.vc
+++ b/samples/png/makefile.vc
@@ -22,9 +22,10 @@ PNG_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\png.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 PNG_OBJECTS =  \
 	$(OBJS)\png_pngdemo.obj \
 	$(OBJS)\png_pngdemo.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\png_pngdemo.obj: .\pngdemo.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(PNG_CXXFLAGS) $**
 
 $(OBJS)\png_pngdemo.res: .\pngdemo.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/png/makefile.wat b/samples/png/makefile.wat
index 6a673035d5..54ae9ef419 100644
--- a/samples/png/makefile.wat
+++ b/samples/png/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\png_pngdemo.obj :  .AUTODEPEND .\pngdemo.cpp
 	$(CXX) -zq -fo=$^@ $(PNG_CXXFLAGS) $<
 
 $(OBJS)\png_pngdemo.res :  .AUTODEPEND .\pngdemo.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/popup/Makefile.in b/samples/popup/Makefile.in
index 077f4dfdbc..074e32bb1c 100644
--- a/samples/popup/Makefile.in
+++ b/samples/popup/Makefile.in
@@ -175,7 +175,7 @@ popup_popup.o: $(srcdir)/popup.cpp
 	$(CXXC) -c -o $@ $(POPUP_CXXFLAGS) $(srcdir)/popup.cpp
 
 popup_sample_rc.o: $(srcdir)/../sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/popup/makefile.bcc b/samples/popup/makefile.bcc
index 16a0cb4183..57a781689e 100644
--- a/samples/popup/makefile.bcc
+++ b/samples/popup/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 POPUP_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 POPUP_OBJECTS =  \
 	$(OBJS)\popup_popup.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\popup_popup.obj: .\popup.cpp
 	$(CXX) -q -c -P -o$@ $(POPUP_CXXFLAGS) $**
 
 $(OBJS)\popup_sample.res: .\..\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/popup/makefile.gcc b/samples/popup/makefile.gcc
index 84c1c7389e..a3b013e591 100644
--- a/samples/popup/makefile.gcc
+++ b/samples/popup/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 POPUP_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 POPUP_OBJECTS =  \
 	$(OBJS)\popup_popup.o \
 	$(OBJS)\popup_sample_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\popup_popup.o: ./popup.cpp
 	$(CXX) -c -o $@ $(POPUP_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\popup_sample_rc.o: ./../sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/popup/makefile.vc b/samples/popup/makefile.vc
index 45c15dc896..377c2c26ca 100644
--- a/samples/popup/makefile.vc
+++ b/samples/popup/makefile.vc
@@ -22,9 +22,10 @@ POPUP_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\popup.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 POPUP_OBJECTS =  \
 	$(OBJS)\popup_popup.obj \
 	$(OBJS)\popup_sample.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\popup_popup.obj: .\popup.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(POPUP_CXXFLAGS) $**
 
 $(OBJS)\popup_sample.res: .\..\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/popup/makefile.wat b/samples/popup/makefile.wat
index d097f00b52..08dde6f87f 100644
--- a/samples/popup/makefile.wat
+++ b/samples/popup/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\popup_popup.obj :  .AUTODEPEND .\popup.cpp
 	$(CXX) -zq -fo=$^@ $(POPUP_CXXFLAGS) $<
 
 $(OBJS)\popup_sample.res :  .AUTODEPEND .\..\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/printing/Makefile.in b/samples/printing/Makefile.in
index a0620cf1dc..34b3eeda2a 100644
--- a/samples/printing/Makefile.in
+++ b/samples/printing/Makefile.in
@@ -176,7 +176,7 @@ printing_printing.o: $(srcdir)/printing.cpp
 	$(CXXC) -c -o $@ $(PRINTING_CXXFLAGS) $(srcdir)/printing.cpp
 
 printing_printing_rc.o: $(srcdir)/printing.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/printing/makefile.bcc b/samples/printing/makefile.bcc
index 20e6126048..e157437f3a 100644
--- a/samples/printing/makefile.bcc
+++ b/samples/printing/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 PRINTING_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 PRINTING_OBJECTS =  \
 	$(OBJS)\printing_printing.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\printing_printing.obj: .\printing.cpp
 	$(CXX) -q -c -P -o$@ $(PRINTING_CXXFLAGS) $**
 
 $(OBJS)\printing_printing.res: .\printing.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/printing/makefile.gcc b/samples/printing/makefile.gcc
index 2178071a22..d694f2e19a 100644
--- a/samples/printing/makefile.gcc
+++ b/samples/printing/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 PRINTING_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 PRINTING_OBJECTS =  \
 	$(OBJS)\printing_printing.o \
 	$(OBJS)\printing_printing_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\printing_printing.o: ./printing.cpp
 	$(CXX) -c -o $@ $(PRINTING_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\printing_printing_rc.o: ./printing.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/printing/makefile.vc b/samples/printing/makefile.vc
index 4c88b0210d..4f4215892d 100644
--- a/samples/printing/makefile.vc
+++ b/samples/printing/makefile.vc
@@ -22,9 +22,10 @@ PRINTING_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\printing.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 PRINTING_OBJECTS =  \
 	$(OBJS)\printing_printing.obj \
 	$(OBJS)\printing_printing.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\printing_printing.obj: .\printing.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(PRINTING_CXXFLAGS) $**
 
 $(OBJS)\printing_printing.res: .\printing.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/printing/makefile.wat b/samples/printing/makefile.wat
index 1295612654..9a09eeac9f 100644
--- a/samples/printing/makefile.wat
+++ b/samples/printing/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\printing_printing.obj :  .AUTODEPEND .\printing.cpp
 	$(CXX) -zq -fo=$^@ $(PRINTING_CXXFLAGS) $<
 
 $(OBJS)\printing_printing.res :  .AUTODEPEND .\printing.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/propsize/Makefile.in b/samples/propsize/Makefile.in
index 292c17770c..5686523a7c 100644
--- a/samples/propsize/Makefile.in
+++ b/samples/propsize/Makefile.in
@@ -176,7 +176,7 @@ propsize_propsize.o: $(srcdir)/propsize.cpp
 	$(CXXC) -c -o $@ $(PROPSIZE_CXXFLAGS) $(srcdir)/propsize.cpp
 
 propsize_propsize_rc.o: $(srcdir)/propsize.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/propsize/makefile.bcc b/samples/propsize/makefile.bcc
index 931bb6fda3..61cb3e492e 100644
--- a/samples/propsize/makefile.bcc
+++ b/samples/propsize/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 PROPSIZE_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 PROPSIZE_OBJECTS =  \
 	$(OBJS)\propsize_propsize.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\propsize_propsize.obj: .\propsize.cpp
 	$(CXX) -q -c -P -o$@ $(PROPSIZE_CXXFLAGS) $**
 
 $(OBJS)\propsize_propsize.res: .\propsize.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/propsize/makefile.gcc b/samples/propsize/makefile.gcc
index 0c14593bbc..8de47fa402 100644
--- a/samples/propsize/makefile.gcc
+++ b/samples/propsize/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 PROPSIZE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 PROPSIZE_OBJECTS =  \
 	$(OBJS)\propsize_propsize.o \
 	$(OBJS)\propsize_propsize_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\propsize_propsize.o: ./propsize.cpp
 	$(CXX) -c -o $@ $(PROPSIZE_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\propsize_propsize_rc.o: ./propsize.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/propsize/makefile.vc b/samples/propsize/makefile.vc
index 07d79d739b..68c9a89f42 100644
--- a/samples/propsize/makefile.vc
+++ b/samples/propsize/makefile.vc
@@ -22,9 +22,10 @@ PROPSIZE_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\propsize.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 PROPSIZE_OBJECTS =  \
 	$(OBJS)\propsize_propsize.obj \
 	$(OBJS)\propsize_propsize.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\propsize_propsize.obj: .\propsize.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(PROPSIZE_CXXFLAGS) $**
 
 $(OBJS)\propsize_propsize.res: .\propsize.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/propsize/makefile.wat b/samples/propsize/makefile.wat
index 1e0314d2ba..1acc2a6792 100644
--- a/samples/propsize/makefile.wat
+++ b/samples/propsize/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\propsize_propsize.obj :  .AUTODEPEND .\propsize.cpp
 	$(CXX) -zq -fo=$^@ $(PROPSIZE_CXXFLAGS) $<
 
 $(OBJS)\propsize_propsize.res :  .AUTODEPEND .\propsize.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/regtest/Makefile.in b/samples/regtest/Makefile.in
index 4a8e6759aa..652ed374ac 100644
--- a/samples/regtest/Makefile.in
+++ b/samples/regtest/Makefile.in
@@ -176,7 +176,7 @@ regtest_regtest.o: $(srcdir)/regtest.cpp
 	$(CXXC) -c -o $@ $(REGTEST_CXXFLAGS) $(srcdir)/regtest.cpp
 
 regtest_regtest_rc.o: $(srcdir)/regtest.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/regtest/makefile.bcc b/samples/regtest/makefile.bcc
index 8c03659569..c14599d63d 100644
--- a/samples/regtest/makefile.bcc
+++ b/samples/regtest/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 REGTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 REGTEST_OBJECTS =  \
 	$(OBJS)\regtest_regtest.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\regtest_regtest.obj: .\regtest.cpp
 	$(CXX) -q -c -P -o$@ $(REGTEST_CXXFLAGS) $**
 
 $(OBJS)\regtest_regtest.res: .\regtest.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/regtest/makefile.gcc b/samples/regtest/makefile.gcc
index c644327748..4f6bed8750 100644
--- a/samples/regtest/makefile.gcc
+++ b/samples/regtest/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 REGTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 REGTEST_OBJECTS =  \
 	$(OBJS)\regtest_regtest.o \
 	$(OBJS)\regtest_regtest_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\regtest_regtest.o: ./regtest.cpp
 	$(CXX) -c -o $@ $(REGTEST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\regtest_regtest_rc.o: ./regtest.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/regtest/makefile.vc b/samples/regtest/makefile.vc
index 9b5b7d921d..30410bd701 100644
--- a/samples/regtest/makefile.vc
+++ b/samples/regtest/makefile.vc
@@ -22,9 +22,10 @@ REGTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\regtest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 REGTEST_OBJECTS =  \
 	$(OBJS)\regtest_regtest.obj \
 	$(OBJS)\regtest_regtest.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\regtest_regtest.obj: .\regtest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(REGTEST_CXXFLAGS) $**
 
 $(OBJS)\regtest_regtest.res: .\regtest.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/regtest/makefile.wat b/samples/regtest/makefile.wat
index 20fa23b79f..7cab05c4ac 100644
--- a/samples/regtest/makefile.wat
+++ b/samples/regtest/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\regtest_regtest.obj :  .AUTODEPEND .\regtest.cpp
 	$(CXX) -zq -fo=$^@ $(REGTEST_CXXFLAGS) $<
 
 $(OBJS)\regtest_regtest.res :  .AUTODEPEND .\regtest.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/render/Makefile.in b/samples/render/Makefile.in
index fa6050c4c6..07407dda24 100644
--- a/samples/render/Makefile.in
+++ b/samples/render/Makefile.in
@@ -210,7 +210,7 @@ render.app/Contents/PkgInfo: render$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info.p
 @COND_SHARED_1@	$(INSTALL_PROGRAM) $(DLLPREFIX_MODULE)renddll_$(PORTNAME)$(WXUNIVNAME)$(PLUGINSUFFIX)$(PLUGVERDELIM)$(PLUGIN_VERSION0)$(WXCOMPILER).$(SO_SUFFIX_MODULE) $(DESTDIR)$(PLUGINS_INST_DIR)
 
 render_sample_rc.o: $(srcdir)/../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 render_render.o: $(srcdir)/render.cpp
 	$(CXXC) -c -o $@ $(RENDER_CXXFLAGS) $(srcdir)/render.cpp
diff --git a/samples/render/makefile.bcc b/samples/render/makefile.bcc
index fcff391ae9..4888e163a0 100644
--- a/samples/render/makefile.bcc
+++ b/samples/render/makefile.bcc
@@ -30,15 +30,16 @@ SETUPHDIR = \
 RENDER_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_0) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 RENDER_OBJECTS =  \
 	$(OBJS)\render_render.obj
 RENDDLL_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_0) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-DWXUSINGDLL $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -DWXUSINGDLL $(CPPFLAGS) $(CXXFLAGS)
 RENDDLL_OBJECTS =  \
 	$(OBJS)\renddll_renddll.obj
 
@@ -110,6 +111,9 @@ __THREAD_DEFINE_p_1 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -171,6 +175,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "0"
 __WXLIB_CORE_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_core.lib
@@ -247,7 +254,7 @@ $(OBJS)\renddll_$(PORTNAME)$(WXUNIVNAME)$(PLUGINSUFFIX)$(WX_RELEASE_NODOT)_bcc.d
 !endif
 
 $(OBJS)\render_sample.res: .\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
 
 $(OBJS)\render_render.obj: .\render.cpp
 	$(CXX) -q -c -P -o$@ $(RENDER_CXXFLAGS) $**
diff --git a/samples/render/makefile.gcc b/samples/render/makefile.gcc
index 1f56bade32..228b4426ac 100644
--- a/samples/render/makefile.gcc
+++ b/samples/render/makefile.gcc
@@ -22,18 +22,18 @@ SETUPHDIR = \
 RENDER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 RENDER_OBJECTS =  \
 	$(OBJS)\render_sample_rc.o \
 	$(OBJS)\render_render.o
 RENDDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -DWXUSINGDLL $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -DWXUSINGDLL $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 RENDDLL_OBJECTS =  \
 	$(OBJS)\renddll_renddll.o
 
@@ -120,6 +120,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -171,6 +174,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(MONOLITHIC),0)
 __WXLIB_CORE_p = \
 	-lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_core
@@ -242,7 +248,7 @@ $(OBJS)\renddll_$(PORTNAME)$(WXUNIVNAME)$(PLUGINSUFFIX)$(WX_RELEASE_NODOT)_gcc.d
 endif
 
 $(OBJS)\render_sample_rc.o: ./../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
 
 $(OBJS)\render_render.o: ./render.cpp
 	$(CXX) -c -o $@ $(RENDER_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/render/makefile.vc b/samples/render/makefile.vc
index 8d24ddd4bc..b41d792388 100644
--- a/samples/render/makefile.vc
+++ b/samples/render/makefile.vc
@@ -22,9 +22,9 @@ RENDER_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) /Fd$(OBJS)\render.pdb $(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) \
 	$(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) \
-	/D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
+	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
 RENDER_OBJECTS =  \
 	$(OBJS)\render_sample.res \
 	$(OBJS)\render_render.obj
@@ -34,8 +34,8 @@ RENDDLL_CXXFLAGS = /M$(__RUNTIME_LIBS_23)$(__DEBUGRUNTIME) /DWIN32 \
 	$(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ \
 	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
 	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	/I.\..\..\include /I$(SETUPHDIR) /W4 /DWXUSINGDLL $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
+	$(__MSLU_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) /W4 /DWXUSINGDLL \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
 RENDDLL_OBJECTS =  \
 	$(OBJS)\renddll_renddll.obj
 
@@ -131,6 +131,9 @@ __THREAD_DEFINE_p_1 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -246,6 +249,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(MONOLITHIC)" == "0"
 __WXLIB_CORE_p = \
 	wx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_core.lib
@@ -304,7 +310,7 @@ $(OBJS)\renddll_$(PORTNAME)$(WXUNIVNAME)$(PLUGINSUFFIX)$(WX_RELEASE_NODOT)_vc.dl
 !endif
 
 $(OBJS)\render_sample.res: .\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
 
 $(OBJS)\render_render.obj: .\render.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(RENDER_CXXFLAGS) $**
diff --git a/samples/render/makefile.wat b/samples/render/makefile.wat
index fd34a823d7..3fd0193ba2 100644
--- a/samples/render/makefile.wat
+++ b/samples/render/makefile.wat
@@ -294,7 +294,7 @@ $(OBJS)\renddll_$(PORTNAME)$(WXUNIVNAME)$(PLUGINSUFFIX)$(WX_RELEASE_NODOT)_wat.d
 !endif
 
 $(OBJS)\render_sample.res :  .AUTODEPEND .\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
 
 $(OBJS)\render_render.obj :  .AUTODEPEND .\render.cpp
 	$(CXX) -zq -fo=$^@ $(RENDER_CXXFLAGS) $<
diff --git a/samples/richedit/Makefile.in b/samples/richedit/Makefile.in
index 156457799f..9ad09dad96 100644
--- a/samples/richedit/Makefile.in
+++ b/samples/richedit/Makefile.in
@@ -189,7 +189,7 @@ data:
 	done
 
 richedit_sample_rc.o: $(srcdir)/../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 richedit_wxLayout.o: $(srcdir)/wxLayout.cpp
 	$(CXXC) -c -o $@ $(RICHEDIT_CXXFLAGS) $(srcdir)/wxLayout.cpp
diff --git a/samples/richedit/makefile.bcc b/samples/richedit/makefile.bcc
index de4945169a..af390b131d 100644
--- a/samples/richedit/makefile.bcc
+++ b/samples/richedit/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 RICHEDIT_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 RICHEDIT_OBJECTS =  \
 	$(OBJS)\richedit_wxLayout.obj \
 	$(OBJS)\richedit_kbList.obj \
@@ -146,6 +147,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -219,7 +226,7 @@ data:
 	for %f in (wxLayout.cpp) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\richedit_sample.res: .\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
 
 $(OBJS)\richedit_wxLayout.obj: .\wxLayout.cpp
 	$(CXX) -q -c -P -o$@ $(RICHEDIT_CXXFLAGS) $**
diff --git a/samples/richedit/makefile.gcc b/samples/richedit/makefile.gcc
index 71e542a3d3..52139b0777 100644
--- a/samples/richedit/makefile.gcc
+++ b/samples/richedit/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 RICHEDIT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 RICHEDIT_OBJECTS =  \
 	$(OBJS)\richedit_sample_rc.o \
 	$(OBJS)\richedit_wxLayout.o \
@@ -137,6 +138,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -212,7 +219,7 @@ data:
 	for %%f in (wxLayout.cpp) do if not exist $(OBJS)\%%f copy .\%%f $(OBJS)
 
 $(OBJS)\richedit_sample_rc.o: ./../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
 
 $(OBJS)\richedit_wxLayout.o: ./wxLayout.cpp
 	$(CXX) -c -o $@ $(RICHEDIT_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/richedit/makefile.vc b/samples/richedit/makefile.vc
index 241d9cc53e..858f76f0bb 100644
--- a/samples/richedit/makefile.vc
+++ b/samples/richedit/makefile.vc
@@ -22,9 +22,10 @@ RICHEDIT_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\richedit.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 RICHEDIT_OBJECTS =  \
 	$(OBJS)\richedit_sample.res \
 	$(OBJS)\richedit_wxLayout.obj \
@@ -212,6 +213,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -270,7 +277,7 @@ data:
 	for %f in (wxLayout.cpp) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\richedit_sample.res: .\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
 
 $(OBJS)\richedit_wxLayout.obj: .\wxLayout.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(RICHEDIT_CXXFLAGS) $**
diff --git a/samples/richedit/makefile.wat b/samples/richedit/makefile.wat
index 02a855aaa8..c4f06d67fd 100644
--- a/samples/richedit/makefile.wat
+++ b/samples/richedit/makefile.wat
@@ -253,7 +253,7 @@ data : .SYMBOLIC
 	for %f in (wxLayout.cpp) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\richedit_sample.res :  .AUTODEPEND .\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
 
 $(OBJS)\richedit_wxLayout.obj :  .AUTODEPEND .\wxLayout.cpp
 	$(CXX) -zq -fo=$^@ $(RICHEDIT_CXXFLAGS) $<
diff --git a/samples/rotate/Makefile.in b/samples/rotate/Makefile.in
index 90217ad88b..522fe43fe7 100644
--- a/samples/rotate/Makefile.in
+++ b/samples/rotate/Makefile.in
@@ -188,7 +188,7 @@ rotate_rotate.o: $(srcdir)/rotate.cpp
 	$(CXXC) -c -o $@ $(ROTATE_CXXFLAGS) $(srcdir)/rotate.cpp
 
 rotate_rotate_rc.o: $(srcdir)/rotate.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/rotate/makefile.bcc b/samples/rotate/makefile.bcc
index 8f65ff0319..abe9ec4f6e 100644
--- a/samples/rotate/makefile.bcc
+++ b/samples/rotate/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 ROTATE_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 ROTATE_OBJECTS =  \
 	$(OBJS)\rotate_rotate.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\rotate_rotate.obj: .\rotate.cpp
 	$(CXX) -q -c -P -o$@ $(ROTATE_CXXFLAGS) $**
 
 $(OBJS)\rotate_rotate.res: .\rotate.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/rotate/makefile.gcc b/samples/rotate/makefile.gcc
index 59826edbd6..942e320150 100644
--- a/samples/rotate/makefile.gcc
+++ b/samples/rotate/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 ROTATE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 ROTATE_OBJECTS =  \
 	$(OBJS)\rotate_rotate.o \
 	$(OBJS)\rotate_rotate_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +218,7 @@ $(OBJS)\rotate_rotate.o: ./rotate.cpp
 	$(CXX) -c -o $@ $(ROTATE_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\rotate_rotate_rc.o: ./rotate.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/rotate/makefile.vc b/samples/rotate/makefile.vc
index 76c50f72e7..1956e172a3 100644
--- a/samples/rotate/makefile.vc
+++ b/samples/rotate/makefile.vc
@@ -22,9 +22,10 @@ ROTATE_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\rotate.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 ROTATE_OBJECTS =  \
 	$(OBJS)\rotate_rotate.obj \
 	$(OBJS)\rotate_rotate.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\rotate_rotate.obj: .\rotate.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(ROTATE_CXXFLAGS) $**
 
 $(OBJS)\rotate_rotate.res: .\rotate.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/rotate/makefile.wat b/samples/rotate/makefile.wat
index bf68ed404f..0ef31cec04 100644
--- a/samples/rotate/makefile.wat
+++ b/samples/rotate/makefile.wat
@@ -252,5 +252,5 @@ $(OBJS)\rotate_rotate.obj :  .AUTODEPEND .\rotate.cpp
 	$(CXX) -zq -fo=$^@ $(ROTATE_CXXFLAGS) $<
 
 $(OBJS)\rotate_rotate.res :  .AUTODEPEND .\rotate.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/sashtest/Makefile.in b/samples/sashtest/Makefile.in
index 72843aa4f9..0f6b7ebbe3 100644
--- a/samples/sashtest/Makefile.in
+++ b/samples/sashtest/Makefile.in
@@ -181,7 +181,7 @@ sashtest_sashtest.o: $(srcdir)/sashtest.cpp
 	$(CXXC) -c -o $@ $(SASHTEST_CXXFLAGS) $(srcdir)/sashtest.cpp
 
 sashtest_sashtest_rc.o: $(srcdir)/sashtest.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/sashtest/makefile.bcc b/samples/sashtest/makefile.bcc
index f54ef7f0fe..93cdac8ebe 100644
--- a/samples/sashtest/makefile.bcc
+++ b/samples/sashtest/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 SASHTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 SASHTEST_OBJECTS =  \
 	$(OBJS)\sashtest_sashtest.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\sashtest_sashtest.obj: .\sashtest.cpp
 	$(CXX) -q -c -P -o$@ $(SASHTEST_CXXFLAGS) $**
 
 $(OBJS)\sashtest_sashtest.res: .\sashtest.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/sashtest/makefile.gcc b/samples/sashtest/makefile.gcc
index 88482a1225..6a1d03625c 100644
--- a/samples/sashtest/makefile.gcc
+++ b/samples/sashtest/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 SASHTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 SASHTEST_OBJECTS =  \
 	$(OBJS)\sashtest_sashtest.o \
 	$(OBJS)\sashtest_sashtest_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +218,7 @@ $(OBJS)\sashtest_sashtest.o: ./sashtest.cpp
 	$(CXX) -c -o $@ $(SASHTEST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\sashtest_sashtest_rc.o: ./sashtest.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/sashtest/makefile.vc b/samples/sashtest/makefile.vc
index 9ec1ec9737..df0a033421 100644
--- a/samples/sashtest/makefile.vc
+++ b/samples/sashtest/makefile.vc
@@ -22,9 +22,10 @@ SASHTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\sashtest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 SASHTEST_OBJECTS =  \
 	$(OBJS)\sashtest_sashtest.obj \
 	$(OBJS)\sashtest_sashtest.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\sashtest_sashtest.obj: .\sashtest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(SASHTEST_CXXFLAGS) $**
 
 $(OBJS)\sashtest_sashtest.res: .\sashtest.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/sashtest/makefile.wat b/samples/sashtest/makefile.wat
index f866e4c818..fc6783b0db 100644
--- a/samples/sashtest/makefile.wat
+++ b/samples/sashtest/makefile.wat
@@ -253,5 +253,5 @@ $(OBJS)\sashtest_sashtest.obj :  .AUTODEPEND .\sashtest.cpp
 	$(CXX) -zq -fo=$^@ $(SASHTEST_CXXFLAGS) $<
 
 $(OBJS)\sashtest_sashtest.res :  .AUTODEPEND .\sashtest.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/scroll/Makefile.in b/samples/scroll/Makefile.in
index 0d4de3d921..9f54debc7d 100644
--- a/samples/scroll/Makefile.in
+++ b/samples/scroll/Makefile.in
@@ -176,7 +176,7 @@ scroll_scroll.o: $(srcdir)/scroll.cpp
 	$(CXXC) -c -o $@ $(SCROLL_CXXFLAGS) $(srcdir)/scroll.cpp
 
 scroll_scroll_rc.o: $(srcdir)/scroll.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/scroll/makefile.bcc b/samples/scroll/makefile.bcc
index 95d73d15d3..9121ec7735 100644
--- a/samples/scroll/makefile.bcc
+++ b/samples/scroll/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 SCROLL_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 SCROLL_OBJECTS =  \
 	$(OBJS)\scroll_scroll.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\scroll_scroll.obj: .\scroll.cpp
 	$(CXX) -q -c -P -o$@ $(SCROLL_CXXFLAGS) $**
 
 $(OBJS)\scroll_scroll.res: .\scroll.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/scroll/makefile.gcc b/samples/scroll/makefile.gcc
index 2136d5e6aa..d8fc5ada40 100644
--- a/samples/scroll/makefile.gcc
+++ b/samples/scroll/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 SCROLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 SCROLL_OBJECTS =  \
 	$(OBJS)\scroll_scroll.o \
 	$(OBJS)\scroll_scroll_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\scroll_scroll.o: ./scroll.cpp
 	$(CXX) -c -o $@ $(SCROLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\scroll_scroll_rc.o: ./scroll.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/scroll/makefile.vc b/samples/scroll/makefile.vc
index 83582096a9..45f09145e0 100644
--- a/samples/scroll/makefile.vc
+++ b/samples/scroll/makefile.vc
@@ -22,9 +22,10 @@ SCROLL_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\scroll.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 SCROLL_OBJECTS =  \
 	$(OBJS)\scroll_scroll.obj \
 	$(OBJS)\scroll_scroll.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\scroll_scroll.obj: .\scroll.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(SCROLL_CXXFLAGS) $**
 
 $(OBJS)\scroll_scroll.res: .\scroll.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/scroll/makefile.wat b/samples/scroll/makefile.wat
index 007433c99e..0e64b8a1f9 100644
--- a/samples/scroll/makefile.wat
+++ b/samples/scroll/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\scroll_scroll.obj :  .AUTODEPEND .\scroll.cpp
 	$(CXX) -zq -fo=$^@ $(SCROLL_CXXFLAGS) $<
 
 $(OBJS)\scroll_scroll.res :  .AUTODEPEND .\scroll.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/scrollsub/Makefile.in b/samples/scrollsub/Makefile.in
index 70b211b1ce..f1b3822620 100644
--- a/samples/scrollsub/Makefile.in
+++ b/samples/scrollsub/Makefile.in
@@ -176,7 +176,7 @@ scrollsub_scrollsub.o: $(srcdir)/scrollsub.cpp
 	$(CXXC) -c -o $@ $(SCROLLSUB_CXXFLAGS) $(srcdir)/scrollsub.cpp
 
 scrollsub_scrollsub_rc.o: $(srcdir)/scrollsub.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/scrollsub/makefile.bcc b/samples/scrollsub/makefile.bcc
index c7d5233c29..ae86b9f054 100644
--- a/samples/scrollsub/makefile.bcc
+++ b/samples/scrollsub/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 SCROLLSUB_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 SCROLLSUB_OBJECTS =  \
 	$(OBJS)\scrollsub_scrollsub.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\scrollsub_scrollsub.obj: .\scrollsub.cpp
 	$(CXX) -q -c -P -o$@ $(SCROLLSUB_CXXFLAGS) $**
 
 $(OBJS)\scrollsub_scrollsub.res: .\scrollsub.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/scrollsub/makefile.gcc b/samples/scrollsub/makefile.gcc
index 1fdee49474..d809bcc48e 100644
--- a/samples/scrollsub/makefile.gcc
+++ b/samples/scrollsub/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 SCROLLSUB_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 SCROLLSUB_OBJECTS =  \
 	$(OBJS)\scrollsub_scrollsub.o \
 	$(OBJS)\scrollsub_scrollsub_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\scrollsub_scrollsub.o: ./scrollsub.cpp
 	$(CXX) -c -o $@ $(SCROLLSUB_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\scrollsub_scrollsub_rc.o: ./scrollsub.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/scrollsub/makefile.vc b/samples/scrollsub/makefile.vc
index 6755b975af..3a7255016a 100644
--- a/samples/scrollsub/makefile.vc
+++ b/samples/scrollsub/makefile.vc
@@ -22,9 +22,10 @@ SCROLLSUB_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\scrollsub.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 SCROLLSUB_OBJECTS =  \
 	$(OBJS)\scrollsub_scrollsub.obj \
 	$(OBJS)\scrollsub_scrollsub.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\scrollsub_scrollsub.obj: .\scrollsub.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(SCROLLSUB_CXXFLAGS) $**
 
 $(OBJS)\scrollsub_scrollsub.res: .\scrollsub.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/scrollsub/makefile.wat b/samples/scrollsub/makefile.wat
index 6506c013c3..bc1a7337c7 100644
--- a/samples/scrollsub/makefile.wat
+++ b/samples/scrollsub/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\scrollsub_scrollsub.obj :  .AUTODEPEND .\scrollsub.cpp
 	$(CXX) -zq -fo=$^@ $(SCROLLSUB_CXXFLAGS) $<
 
 $(OBJS)\scrollsub_scrollsub.res :  .AUTODEPEND .\scrollsub.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/shaped/Makefile.in b/samples/shaped/Makefile.in
index 767a9b90c2..a01ce43135 100644
--- a/samples/shaped/Makefile.in
+++ b/samples/shaped/Makefile.in
@@ -188,7 +188,7 @@ shaped_shaped.o: $(srcdir)/shaped.cpp
 	$(CXXC) -c -o $@ $(SHAPED_CXXFLAGS) $(srcdir)/shaped.cpp
 
 shaped_shaped_rc.o: $(srcdir)/shaped.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/shaped/makefile.bcc b/samples/shaped/makefile.bcc
index 273b93a469..f56ca8aa91 100644
--- a/samples/shaped/makefile.bcc
+++ b/samples/shaped/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 SHAPED_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 SHAPED_OBJECTS =  \
 	$(OBJS)\shaped_shaped.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\shaped_shaped.obj: .\shaped.cpp
 	$(CXX) -q -c -P -o$@ $(SHAPED_CXXFLAGS) $**
 
 $(OBJS)\shaped_shaped.res: .\shaped.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/shaped/makefile.gcc b/samples/shaped/makefile.gcc
index c665cca9df..d6b4acdbac 100644
--- a/samples/shaped/makefile.gcc
+++ b/samples/shaped/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 SHAPED_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 SHAPED_OBJECTS =  \
 	$(OBJS)\shaped_shaped.o \
 	$(OBJS)\shaped_shaped_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +218,7 @@ $(OBJS)\shaped_shaped.o: ./shaped.cpp
 	$(CXX) -c -o $@ $(SHAPED_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\shaped_shaped_rc.o: ./shaped.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/shaped/makefile.vc b/samples/shaped/makefile.vc
index ec697e2613..21edb97734 100644
--- a/samples/shaped/makefile.vc
+++ b/samples/shaped/makefile.vc
@@ -22,9 +22,10 @@ SHAPED_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\shaped.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 SHAPED_OBJECTS =  \
 	$(OBJS)\shaped_shaped.obj \
 	$(OBJS)\shaped_shaped.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\shaped_shaped.obj: .\shaped.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(SHAPED_CXXFLAGS) $**
 
 $(OBJS)\shaped_shaped.res: .\shaped.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/shaped/makefile.wat b/samples/shaped/makefile.wat
index 544c93c72f..b603654715 100644
--- a/samples/shaped/makefile.wat
+++ b/samples/shaped/makefile.wat
@@ -252,5 +252,5 @@ $(OBJS)\shaped_shaped.obj :  .AUTODEPEND .\shaped.cpp
 	$(CXX) -zq -fo=$^@ $(SHAPED_CXXFLAGS) $<
 
 $(OBJS)\shaped_shaped.res :  .AUTODEPEND .\shaped.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/sockets/Makefile.in b/samples/sockets/Makefile.in
index 6bca18e0b4..61bcea207c 100644
--- a/samples/sockets/Makefile.in
+++ b/samples/sockets/Makefile.in
@@ -234,13 +234,13 @@ client_client.o: $(srcdir)/client.cpp
 	$(CXXC) -c -o $@ $(CLIENT_CXXFLAGS) $(srcdir)/client.cpp
 
 client_client_rc.o: $(srcdir)/client.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_6)  $(__EXCEPTIONS_DEFINE_p_6) $(__RTTI_DEFINE_p_6) $(__THREAD_DEFINE_p_6)  --include-dir $(srcdir) $(__DLLFLAG_p_6) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_6)  $(__EXCEPTIONS_DEFINE_p_6) $(__RTTI_DEFINE_p_6) $(__THREAD_DEFINE_p_6)   --include-dir $(srcdir) $(__DLLFLAG_p_6) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 server_server.o: $(srcdir)/server.cpp
 	$(CXXC) -c -o $@ $(SERVER_CXXFLAGS) $(srcdir)/server.cpp
 
 server_server_rc.o: $(srcdir)/server.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_6)  $(__EXCEPTIONS_DEFINE_p_6) $(__RTTI_DEFINE_p_6) $(__THREAD_DEFINE_p_6)  --include-dir $(srcdir) $(__DLLFLAG_p_6) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_6)  $(__EXCEPTIONS_DEFINE_p_6) $(__RTTI_DEFINE_p_6) $(__THREAD_DEFINE_p_6)   --include-dir $(srcdir) $(__DLLFLAG_p_6) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/sockets/makefile.bcc b/samples/sockets/makefile.bcc
index dd994e3540..b34075947d 100644
--- a/samples/sockets/makefile.bcc
+++ b/samples/sockets/makefile.bcc
@@ -30,15 +30,17 @@ SETUPHDIR = \
 CLIENT_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_0) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 CLIENT_OBJECTS =  \
 	$(OBJS)\client_client.obj
 SERVER_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_0) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 SERVER_OBJECTS =  \
 	$(OBJS)\server_server.obj
 
@@ -149,6 +151,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_0 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_0 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -236,11 +244,11 @@ $(OBJS)\client_client.obj: .\client.cpp
 	$(CXX) -q -c -P -o$@ $(CLIENT_CXXFLAGS) $**
 
 $(OBJS)\client_client.res: .\client.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_0) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_0) -i.\..\..\samples -dNOPCH $**
 
 $(OBJS)\server_server.obj: .\server.cpp
 	$(CXX) -q -c -P -o$@ $(SERVER_CXXFLAGS) $**
 
 $(OBJS)\server_server.res: .\server.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_0) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_0) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/sockets/makefile.gcc b/samples/sockets/makefile.gcc
index 9dbda4b05e..b26d3c8dec 100644
--- a/samples/sockets/makefile.gcc
+++ b/samples/sockets/makefile.gcc
@@ -22,18 +22,18 @@ SETUPHDIR = \
 CLIENT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 CLIENT_OBJECTS =  \
 	$(OBJS)\client_client.o \
 	$(OBJS)\client_client_rc.o
 SERVER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 SERVER_OBJECTS =  \
 	$(OBJS)\server_server.o \
 	$(OBJS)\server_server_rc.o
@@ -142,6 +142,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_0 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_0 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -224,13 +230,13 @@ $(OBJS)\client_client.o: ./client.cpp
 	$(CXX) -c -o $@ $(CLIENT_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\client_client_rc.o: ./client.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_0) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_0) --include-dir ./../../samples --define NOPCH
 
 $(OBJS)\server_server.o: ./server.cpp
 	$(CXX) -c -o $@ $(SERVER_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\server_server_rc.o: ./server.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_0) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_0) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/sockets/makefile.vc b/samples/sockets/makefile.vc
index 599c9fcc56..a698176c72 100644
--- a/samples/sockets/makefile.vc
+++ b/samples/sockets/makefile.vc
@@ -22,9 +22,9 @@ CLIENT_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) /Fd$(OBJS)\client.pdb $(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) \
 	$(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) \
-	/D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
+	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
 CLIENT_OBJECTS =  \
 	$(OBJS)\client_client.obj \
 	$(OBJS)\client_client.res
@@ -32,9 +32,9 @@ SERVER_CXXFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) /Fd$(OBJS)\server.pdb $(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) \
 	$(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) \
-	/D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	$(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
+	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
 SERVER_OBJECTS =  \
 	$(OBJS)\server_server.obj \
 	$(OBJS)\server_server.res
@@ -224,6 +224,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_0 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_0 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -293,11 +299,11 @@ $(OBJS)\client_client.obj: .\client.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(CLIENT_CXXFLAGS) $**
 
 $(OBJS)\client_client.res: .\client.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_0) $(__NO_VC_CRTDBG_p_0)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_0) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_0) $(__NO_VC_CRTDBG_p_0)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_0) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
 $(OBJS)\server_server.obj: .\server.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(SERVER_CXXFLAGS) $**
 
 $(OBJS)\server_server.res: .\server.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_0) $(__NO_VC_CRTDBG_p_0)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_0) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_0) $(__NO_VC_CRTDBG_p_0)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_0) $(__DEBUG_DEFINE_p_0) $(__EXCEPTIONS_DEFINE_p_0) $(__RTTI_DEFINE_p_0) $(__THREAD_DEFINE_p_0) $(__UNICODE_DEFINE_p_0) $(__MSLU_DEFINE_p_0) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_0) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/sockets/makefile.wat b/samples/sockets/makefile.wat
index d5ef9ed70d..b1483698e4 100644
--- a/samples/sockets/makefile.wat
+++ b/samples/sockets/makefile.wat
@@ -273,11 +273,11 @@ $(OBJS)\client_client.obj :  .AUTODEPEND .\client.cpp
 	$(CXX) -zq -fo=$^@ $(CLIENT_CXXFLAGS) $<
 
 $(OBJS)\client_client.res :  .AUTODEPEND .\client.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
 $(OBJS)\server_server.obj :  .AUTODEPEND .\server.cpp
 	$(CXX) -zq -fo=$^@ $(SERVER_CXXFLAGS) $<
 
 $(OBJS)\server_server.res :  .AUTODEPEND .\server.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/sound/makefile.wat b/samples/sound/makefile.wat
index bc6d5d0fb1..cd4f785658 100644
--- a/samples/sound/makefile.wat
+++ b/samples/sound/makefile.wat
@@ -254,7 +254,7 @@ data : .SYMBOLIC
 	for %f in (9000g.wav cuckoo.wav doggrowl.wav tinkalink2.wav) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\sound_sound.obj :  .AUTODEPEND .\sound.cpp
-	$(CXX) -bt=nt -zq -fo=$^@ $(SOUND_CXXFLAGS) $<
+	$(CXX) -zq -fo=$^@ $(SOUND_CXXFLAGS) $<
 
 $(OBJS)\sound_sound.res :  .AUTODEPEND .\sound.rc
 	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
diff --git a/samples/splash/Makefile.in b/samples/splash/Makefile.in
index dc086fb2a1..c1e1f0b092 100644
--- a/samples/splash/Makefile.in
+++ b/samples/splash/Makefile.in
@@ -196,7 +196,7 @@ splash_splash.o: $(srcdir)/splash.cpp
 	$(CXXC) -c -o $@ $(SPLASH_CXXFLAGS) $(srcdir)/splash.cpp
 
 splash_sample_rc.o: $(srcdir)/../sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/splash/makefile.bcc b/samples/splash/makefile.bcc
index 52e5caf565..e0f4084d7e 100644
--- a/samples/splash/makefile.bcc
+++ b/samples/splash/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 SPLASH_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 SPLASH_OBJECTS =  \
 	$(OBJS)\splash_splash.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -226,5 +233,5 @@ $(OBJS)\splash_splash.obj: .\splash.cpp
 	$(CXX) -q -c -P -o$@ $(SPLASH_CXXFLAGS) $**
 
 $(OBJS)\splash_sample.res: .\..\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/splash/makefile.gcc b/samples/splash/makefile.gcc
index 94c1a29ed7..0556f0fbe6 100644
--- a/samples/splash/makefile.gcc
+++ b/samples/splash/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 SPLASH_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 SPLASH_OBJECTS =  \
 	$(OBJS)\splash_splash.o \
 	$(OBJS)\splash_sample_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -219,7 +226,7 @@ $(OBJS)\splash_splash.o: ./splash.cpp
 	$(CXX) -c -o $@ $(SPLASH_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\splash_sample_rc.o: ./../sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/splash/makefile.vc b/samples/splash/makefile.vc
index 542c0db2b2..a6aee52b4a 100644
--- a/samples/splash/makefile.vc
+++ b/samples/splash/makefile.vc
@@ -22,9 +22,10 @@ SPLASH_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\splash.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 SPLASH_OBJECTS =  \
 	$(OBJS)\splash_splash.obj \
 	$(OBJS)\splash_sample.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -277,5 +284,5 @@ $(OBJS)\splash_splash.obj: .\splash.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(SPLASH_CXXFLAGS) $**
 
 $(OBJS)\splash_sample.res: .\..\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/splash/makefile.wat b/samples/splash/makefile.wat
index e315f0c96e..710a1bdfd8 100644
--- a/samples/splash/makefile.wat
+++ b/samples/splash/makefile.wat
@@ -262,5 +262,5 @@ $(OBJS)\splash_splash.obj :  .AUTODEPEND .\splash.cpp
 	$(CXX) -zq -fo=$^@ $(SPLASH_CXXFLAGS) $<
 
 $(OBJS)\splash_sample.res :  .AUTODEPEND .\..\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/splitter/Makefile.in b/samples/splitter/Makefile.in
index c57618e639..f940f32bd8 100644
--- a/samples/splitter/Makefile.in
+++ b/samples/splitter/Makefile.in
@@ -176,7 +176,7 @@ splitter_splitter.o: $(srcdir)/splitter.cpp
 	$(CXXC) -c -o $@ $(SPLITTER_CXXFLAGS) $(srcdir)/splitter.cpp
 
 splitter_splitter_rc.o: $(srcdir)/splitter.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/splitter/makefile.bcc b/samples/splitter/makefile.bcc
index 9c02c1a5ce..5e9e9cf773 100644
--- a/samples/splitter/makefile.bcc
+++ b/samples/splitter/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 SPLITTER_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 SPLITTER_OBJECTS =  \
 	$(OBJS)\splitter_splitter.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\splitter_splitter.obj: .\splitter.cpp
 	$(CXX) -q -c -P -o$@ $(SPLITTER_CXXFLAGS) $**
 
 $(OBJS)\splitter_splitter.res: .\splitter.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/splitter/makefile.gcc b/samples/splitter/makefile.gcc
index 6fde6b1157..86db5758b5 100644
--- a/samples/splitter/makefile.gcc
+++ b/samples/splitter/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 SPLITTER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 SPLITTER_OBJECTS =  \
 	$(OBJS)\splitter_splitter.o \
 	$(OBJS)\splitter_splitter_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\splitter_splitter.o: ./splitter.cpp
 	$(CXX) -c -o $@ $(SPLITTER_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\splitter_splitter_rc.o: ./splitter.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/splitter/makefile.vc b/samples/splitter/makefile.vc
index c191699bec..f2ca462ae7 100644
--- a/samples/splitter/makefile.vc
+++ b/samples/splitter/makefile.vc
@@ -22,9 +22,10 @@ SPLITTER_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\splitter.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 SPLITTER_OBJECTS =  \
 	$(OBJS)\splitter_splitter.obj \
 	$(OBJS)\splitter_splitter.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\splitter_splitter.obj: .\splitter.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(SPLITTER_CXXFLAGS) $**
 
 $(OBJS)\splitter_splitter.res: .\splitter.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/splitter/makefile.wat b/samples/splitter/makefile.wat
index 66eb63fb9c..45f52e653b 100644
--- a/samples/splitter/makefile.wat
+++ b/samples/splitter/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\splitter_splitter.obj :  .AUTODEPEND .\splitter.cpp
 	$(CXX) -zq -fo=$^@ $(SPLITTER_CXXFLAGS) $<
 
 $(OBJS)\splitter_splitter.res :  .AUTODEPEND .\splitter.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/statbar/Makefile.in b/samples/statbar/Makefile.in
index 5976e560c9..663136ffdc 100644
--- a/samples/statbar/Makefile.in
+++ b/samples/statbar/Makefile.in
@@ -176,7 +176,7 @@ statbar_statbar.o: $(srcdir)/statbar.cpp
 	$(CXXC) -c -o $@ $(STATBAR_CXXFLAGS) $(srcdir)/statbar.cpp
 
 statbar_statbar_rc.o: $(srcdir)/statbar.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/statbar/makefile.bcc b/samples/statbar/makefile.bcc
index 752dadb1e9..ea7de106cf 100644
--- a/samples/statbar/makefile.bcc
+++ b/samples/statbar/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 STATBAR_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 STATBAR_OBJECTS =  \
 	$(OBJS)\statbar_statbar.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\statbar_statbar.obj: .\statbar.cpp
 	$(CXX) -q -c -P -o$@ $(STATBAR_CXXFLAGS) $**
 
 $(OBJS)\statbar_statbar.res: .\statbar.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/statbar/makefile.gcc b/samples/statbar/makefile.gcc
index d0e9ac852d..27479274f1 100644
--- a/samples/statbar/makefile.gcc
+++ b/samples/statbar/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 STATBAR_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 STATBAR_OBJECTS =  \
 	$(OBJS)\statbar_statbar.o \
 	$(OBJS)\statbar_statbar_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\statbar_statbar.o: ./statbar.cpp
 	$(CXX) -c -o $@ $(STATBAR_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\statbar_statbar_rc.o: ./statbar.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/statbar/makefile.vc b/samples/statbar/makefile.vc
index 057b154dc7..76a099249a 100644
--- a/samples/statbar/makefile.vc
+++ b/samples/statbar/makefile.vc
@@ -22,9 +22,10 @@ STATBAR_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\statbar.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 STATBAR_OBJECTS =  \
 	$(OBJS)\statbar_statbar.obj \
 	$(OBJS)\statbar_statbar.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\statbar_statbar.obj: .\statbar.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(STATBAR_CXXFLAGS) $**
 
 $(OBJS)\statbar_statbar.res: .\statbar.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/statbar/makefile.wat b/samples/statbar/makefile.wat
index ec3daf23c0..972d5ea181 100644
--- a/samples/statbar/makefile.wat
+++ b/samples/statbar/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\statbar_statbar.obj :  .AUTODEPEND .\statbar.cpp
 	$(CXX) -zq -fo=$^@ $(STATBAR_CXXFLAGS) $<
 
 $(OBJS)\statbar_statbar.res :  .AUTODEPEND .\statbar.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/stc/Makefile.in b/samples/stc/Makefile.in
index dee769ee1d..9f77423e7e 100644
--- a/samples/stc/Makefile.in
+++ b/samples/stc/Makefile.in
@@ -188,7 +188,7 @@ data:
 	done
 
 stctest_sample_rc.o: $(srcdir)/../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 stctest_stctest.o: $(srcdir)/stctest.cpp
 	$(CXXC) -c -o $@ $(STCTEST_CXXFLAGS) $(srcdir)/stctest.cpp
diff --git a/samples/stc/makefile.bcc b/samples/stc/makefile.bcc
index 34ffad81f9..2fd92d0d0f 100644
--- a/samples/stc/makefile.bcc
+++ b/samples/stc/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 STCTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH -I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 STCTEST_OBJECTS =  \
 	$(OBJS)\stctest_stctest.obj \
 	$(OBJS)\stctest_edit.obj \
@@ -145,6 +145,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,7 +224,7 @@ data:
 	for %f in (stctest.cpp) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\stctest_sample.res: .\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
 
 $(OBJS)\stctest_stctest.obj: .\stctest.cpp
 	$(CXX) -q -c -P -o$@ $(STCTEST_CXXFLAGS) $**
diff --git a/samples/stc/makefile.gcc b/samples/stc/makefile.gcc
index e1adc291f0..d441c630a5 100644
--- a/samples/stc/makefile.gcc
+++ b/samples/stc/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 STCTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH -I.\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 STCTEST_OBJECTS =  \
 	$(OBJS)\stctest_sample_rc.o \
 	$(OBJS)\stctest_stctest.o \
@@ -136,6 +136,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +217,7 @@ data:
 	for %%f in (stctest.cpp) do if not exist $(OBJS)\%%f copy .\%%f $(OBJS)
 
 $(OBJS)\stctest_sample_rc.o: ./../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
 
 $(OBJS)\stctest_stctest.o: ./stctest.cpp
 	$(CXX) -c -o $@ $(STCTEST_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/stc/makefile.vc b/samples/stc/makefile.vc
index afc5261420..59a42c6162 100644
--- a/samples/stc/makefile.vc
+++ b/samples/stc/makefile.vc
@@ -22,10 +22,10 @@ STCTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\stctest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	/I.\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH /I.\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 STCTEST_OBJECTS =  \
 	$(OBJS)\stctest_sample.res \
 	$(OBJS)\stctest_stctest.obj \
@@ -211,6 +211,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,7 +275,7 @@ data:
 	for %f in (stctest.cpp) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\stctest_sample.res: .\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
 
 $(OBJS)\stctest_stctest.obj: .\stctest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(STCTEST_CXXFLAGS) $**
diff --git a/samples/stc/makefile.wat b/samples/stc/makefile.wat
index 679b42059e..5f7f5757f3 100644
--- a/samples/stc/makefile.wat
+++ b/samples/stc/makefile.wat
@@ -252,7 +252,7 @@ data : .SYMBOLIC
 	for %f in (stctest.cpp) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\stctest_sample.res :  .AUTODEPEND .\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
 
 $(OBJS)\stctest_stctest.obj :  .AUTODEPEND .\stctest.cpp
 	$(CXX) -zq -fo=$^@ $(STCTEST_CXXFLAGS) $<
diff --git a/samples/svg/Makefile.in b/samples/svg/Makefile.in
index 7e6bc05739..7fcc8ae138 100644
--- a/samples/svg/Makefile.in
+++ b/samples/svg/Makefile.in
@@ -174,7 +174,7 @@ svgtest.app/Contents/PkgInfo: svgtest$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info
 @COND_PLATFORM_MACOSX_1@svgtest_bundle: $(____svgtest_BUNDLE_TGT_REF_DEP)
 
 svgtest_sample_rc.o: $(srcdir)/../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 svgtest_svgtest.o: $(srcdir)/svgtest.cpp
 	$(CXXC) -c -o $@ $(SVGTEST_CXXFLAGS) $(srcdir)/svgtest.cpp
diff --git a/samples/svg/makefile.bcc b/samples/svg/makefile.bcc
index b635c34386..bf482a079d 100644
--- a/samples/svg/makefile.bcc
+++ b/samples/svg/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 SVGTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH -I.\..\..\include $(CPPFLAGS) $(CXXFLAGS)
 SVGTEST_OBJECTS =  \
 	$(OBJS)\svgtest_svgtest.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -212,7 +218,7 @@ $(OBJS)\svgtest.exe: $(SVGTEST_OBJECTS)  $(OBJS)\svgtest_sample.res
 |
 
 $(OBJS)\svgtest_sample.res: .\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
 
 $(OBJS)\svgtest_svgtest.obj: .\svgtest.cpp
 	$(CXX) -q -c -P -o$@ $(SVGTEST_CXXFLAGS) $**
diff --git a/samples/svg/makefile.gcc b/samples/svg/makefile.gcc
index 727be63692..ee9cd99fc3 100644
--- a/samples/svg/makefile.gcc
+++ b/samples/svg/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 SVGTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	-I.\..\..\include $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH -I.\..\..\include $(__RTTIFLAG_5) \
+	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 SVGTEST_OBJECTS =  \
 	$(OBJS)\svgtest_sample_rc.o \
 	$(OBJS)\svgtest_svgtest.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -205,7 +211,7 @@ $(OBJS)\svgtest.exe: $(SVGTEST_OBJECTS) $(OBJS)\svgtest_sample_rc.o
 	$(CXX) -o $@ $(SVGTEST_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  -lwx$(PORTNAME)$(WXUNIVNAME)$(WX_RELEASE_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_svg  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\svgtest_sample_rc.o: ./../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
 
 $(OBJS)\svgtest_svgtest.o: ./svgtest.cpp
 	$(CXX) -c -o $@ $(SVGTEST_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/svg/makefile.vc b/samples/svg/makefile.vc
index 4bb5f4da34..97f01600b5 100644
--- a/samples/svg/makefile.vc
+++ b/samples/svg/makefile.vc
@@ -22,10 +22,10 @@ SVGTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\svgtest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	/I.\..\..\include $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH /I.\..\..\include $(__RTTIFLAG_9) \
+	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 SVGTEST_OBJECTS =  \
 	$(OBJS)\svgtest_sample.res \
 	$(OBJS)\svgtest_svgtest.obj
@@ -209,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -263,7 +269,7 @@ $(OBJS)\svgtest.exe: $(SVGTEST_OBJECTS) $(OBJS)\svgtest_sample.res
 <<
 
 $(OBJS)\svgtest_sample.res: .\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
 
 $(OBJS)\svgtest_svgtest.obj: .\svgtest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(SVGTEST_CXXFLAGS) $**
diff --git a/samples/svg/makefile.wat b/samples/svg/makefile.wat
index ec84062c22..a89d43dcee 100644
--- a/samples/svg/makefile.wat
+++ b/samples/svg/makefile.wat
@@ -246,7 +246,7 @@ $(OBJS)\svgtest.exe :  $(SVGTEST_OBJECTS) $(OBJS)\svgtest_sample.res
 	wlink @$(OBJS)\svgtest.lbc
 
 $(OBJS)\svgtest_sample.res :  .AUTODEPEND .\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
 
 $(OBJS)\svgtest_svgtest.obj :  .AUTODEPEND .\svgtest.cpp
 	$(CXX) -zq -fo=$^@ $(SVGTEST_CXXFLAGS) $<
diff --git a/samples/taskbar/Makefile.in b/samples/taskbar/Makefile.in
index 6057391fa3..fcf8882f61 100644
--- a/samples/taskbar/Makefile.in
+++ b/samples/taskbar/Makefile.in
@@ -178,7 +178,7 @@ taskbar.app/Contents/PkgInfo: taskbar$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info
 @COND_PLATFORM_MACOSX_1@taskbar_bundle: $(____taskbar_BUNDLE_TGT_REF_DEP)
 
 taskbar_sample_rc.o: $(srcdir)/../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 taskbar_tbtest.o: $(srcdir)/tbtest.cpp
 	$(CXXC) -c -o $@ $(TASKBAR_CXXFLAGS) $(srcdir)/tbtest.cpp
diff --git a/samples/taskbar/makefile.bcc b/samples/taskbar/makefile.bcc
index cc704c157b..5497e0be43 100644
--- a/samples/taskbar/makefile.bcc
+++ b/samples/taskbar/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 TASKBAR_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 TASKBAR_OBJECTS =  \
 	$(OBJS)\taskbar_tbtest.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -215,7 +222,7 @@ $(OBJS)\taskbar.exe: $(TASKBAR_OBJECTS)  $(OBJS)\taskbar_sample.res
 |
 
 $(OBJS)\taskbar_sample.res: .\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
 
 $(OBJS)\taskbar_tbtest.obj: .\tbtest.cpp
 	$(CXX) -q -c -P -o$@ $(TASKBAR_CXXFLAGS) $**
diff --git a/samples/taskbar/makefile.gcc b/samples/taskbar/makefile.gcc
index 4eb5e48722..0b85cc0035 100644
--- a/samples/taskbar/makefile.gcc
+++ b/samples/taskbar/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 TASKBAR_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 TASKBAR_OBJECTS =  \
 	$(OBJS)\taskbar_sample_rc.o \
 	$(OBJS)\taskbar_tbtest.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -208,7 +215,7 @@ $(OBJS)\taskbar.exe: $(TASKBAR_OBJECTS) $(OBJS)\taskbar_sample_rc.o
 	$(CXX) -o $@ $(TASKBAR_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  $(__WXLIB_ADV_p)  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\taskbar_sample_rc.o: ./../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
 
 $(OBJS)\taskbar_tbtest.o: ./tbtest.cpp
 	$(CXX) -c -o $@ $(TASKBAR_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/taskbar/makefile.vc b/samples/taskbar/makefile.vc
index 058987d88d..ffb784d7c8 100644
--- a/samples/taskbar/makefile.vc
+++ b/samples/taskbar/makefile.vc
@@ -22,9 +22,10 @@ TASKBAR_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\taskbar.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 TASKBAR_OBJECTS =  \
 	$(OBJS)\taskbar_sample.res \
 	$(OBJS)\taskbar_tbtest.obj
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -266,7 +273,7 @@ $(OBJS)\taskbar.exe: $(TASKBAR_OBJECTS) $(OBJS)\taskbar_sample.res
 <<
 
 $(OBJS)\taskbar_sample.res: .\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
 
 $(OBJS)\taskbar_tbtest.obj: .\tbtest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(TASKBAR_CXXFLAGS) $**
diff --git a/samples/taskbar/makefile.wat b/samples/taskbar/makefile.wat
index 18f86edf7e..718de6d527 100644
--- a/samples/taskbar/makefile.wat
+++ b/samples/taskbar/makefile.wat
@@ -250,7 +250,7 @@ $(OBJS)\taskbar.exe :  $(TASKBAR_OBJECTS) $(OBJS)\taskbar_sample.res
 	wlink @$(OBJS)\taskbar.lbc
 
 $(OBJS)\taskbar_sample.res :  .AUTODEPEND .\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
 
 $(OBJS)\taskbar_tbtest.obj :  .AUTODEPEND .\tbtest.cpp
 	$(CXX) -zq -fo=$^@ $(TASKBAR_CXXFLAGS) $<
diff --git a/samples/text/Makefile.in b/samples/text/Makefile.in
index ab421a221a..df4e9382fe 100644
--- a/samples/text/Makefile.in
+++ b/samples/text/Makefile.in
@@ -174,7 +174,7 @@ text_text.o: $(srcdir)/text.cpp
 	$(CXXC) -c -o $@ $(TEXT_CXXFLAGS) $(srcdir)/text.cpp
 
 text_text_rc.o: $(srcdir)/text.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/text/makefile.bcc b/samples/text/makefile.bcc
index eeab327216..25e643aa13 100644
--- a/samples/text/makefile.bcc
+++ b/samples/text/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 TEXT_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 TEXT_OBJECTS =  \
 	$(OBJS)\text_text.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\text_text.obj: .\text.cpp
 	$(CXX) -q -c -P -o$@ $(TEXT_CXXFLAGS) $**
 
 $(OBJS)\text_text.res: .\text.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/text/makefile.gcc b/samples/text/makefile.gcc
index bd84967cf7..ec85045c4d 100644
--- a/samples/text/makefile.gcc
+++ b/samples/text/makefile.gcc
@@ -22,8 +22,8 @@ SETUPHDIR = \
 TEXT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
 	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TEXT_OBJECTS =  \
 	$(OBJS)\text_text.o \
@@ -133,6 +133,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +213,7 @@ $(OBJS)\text_text.o: ./text.cpp
 	$(CXX) -c -o $@ $(TEXT_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\text_text_rc.o: ./text.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/text/makefile.vc b/samples/text/makefile.vc
index a20d48d24c..86a9b5d671 100644
--- a/samples/text/makefile.vc
+++ b/samples/text/makefile.vc
@@ -22,9 +22,10 @@ TEXT_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\text.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 TEXT_OBJECTS =  \
 	$(OBJS)\text_text.obj \
 	$(OBJS)\text_text.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\text_text.obj: .\text.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(TEXT_CXXFLAGS) $**
 
 $(OBJS)\text_text.res: .\text.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/text/makefile.wat b/samples/text/makefile.wat
index a84d24cb6d..780e001cb6 100644
--- a/samples/text/makefile.wat
+++ b/samples/text/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\text_text.obj :  .AUTODEPEND .\text.cpp
 	$(CXX) -zq -fo=$^@ $(TEXT_CXXFLAGS) $<
 
 $(OBJS)\text_text.res :  .AUTODEPEND .\text.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/thread/Makefile.in b/samples/thread/Makefile.in
index 725e4dd50e..6aef9a7c01 100644
--- a/samples/thread/Makefile.in
+++ b/samples/thread/Makefile.in
@@ -176,7 +176,7 @@ thread_thread.o: $(srcdir)/thread.cpp
 	$(CXXC) -c -o $@ $(THREAD_CXXFLAGS) $(srcdir)/thread.cpp
 
 thread_thread_rc.o: $(srcdir)/thread.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/thread/makefile.bcc b/samples/thread/makefile.bcc
index ca9b19eb6c..a5c93a10d9 100644
--- a/samples/thread/makefile.bcc
+++ b/samples/thread/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 THREAD_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 THREAD_OBJECTS =  \
 	$(OBJS)\thread_thread.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\thread_thread.obj: .\thread.cpp
 	$(CXX) -q -c -P -o$@ $(THREAD_CXXFLAGS) $**
 
 $(OBJS)\thread_thread.res: .\thread.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/thread/makefile.gcc b/samples/thread/makefile.gcc
index d50544a621..3129fccc62 100644
--- a/samples/thread/makefile.gcc
+++ b/samples/thread/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 THREAD_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 THREAD_OBJECTS =  \
 	$(OBJS)\thread_thread.o \
 	$(OBJS)\thread_thread_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\thread_thread.o: ./thread.cpp
 	$(CXX) -c -o $@ $(THREAD_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\thread_thread_rc.o: ./thread.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/thread/makefile.vc b/samples/thread/makefile.vc
index 095dd6c898..43f7c6468f 100644
--- a/samples/thread/makefile.vc
+++ b/samples/thread/makefile.vc
@@ -22,9 +22,10 @@ THREAD_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\thread.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 THREAD_OBJECTS =  \
 	$(OBJS)\thread_thread.obj \
 	$(OBJS)\thread_thread.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\thread_thread.obj: .\thread.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(THREAD_CXXFLAGS) $**
 
 $(OBJS)\thread_thread.res: .\thread.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/thread/makefile.wat b/samples/thread/makefile.wat
index 1751dde000..d27d018c82 100644
--- a/samples/thread/makefile.wat
+++ b/samples/thread/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\thread_thread.obj :  .AUTODEPEND .\thread.cpp
 	$(CXX) -zq -fo=$^@ $(THREAD_CXXFLAGS) $<
 
 $(OBJS)\thread_thread.res :  .AUTODEPEND .\thread.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/toolbar/Makefile.in b/samples/toolbar/Makefile.in
index 14710d5981..1d283ed78e 100644
--- a/samples/toolbar/Makefile.in
+++ b/samples/toolbar/Makefile.in
@@ -176,7 +176,7 @@ toolbar_toolbar.o: $(srcdir)/toolbar.cpp
 	$(CXXC) -c -o $@ $(TOOLBAR_CXXFLAGS) $(srcdir)/toolbar.cpp
 
 toolbar_toolbar_rc.o: $(srcdir)/toolbar.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/toolbar/makefile.bcc b/samples/toolbar/makefile.bcc
index 2b6cc6aec8..ebe49b4e2c 100644
--- a/samples/toolbar/makefile.bcc
+++ b/samples/toolbar/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 TOOLBAR_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 TOOLBAR_OBJECTS =  \
 	$(OBJS)\toolbar_toolbar.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\toolbar_toolbar.obj: .\toolbar.cpp
 	$(CXX) -q -c -P -o$@ $(TOOLBAR_CXXFLAGS) $**
 
 $(OBJS)\toolbar_toolbar.res: .\toolbar.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/toolbar/makefile.gcc b/samples/toolbar/makefile.gcc
index 2e6d38af76..f95eaf7625 100644
--- a/samples/toolbar/makefile.gcc
+++ b/samples/toolbar/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 TOOLBAR_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 TOOLBAR_OBJECTS =  \
 	$(OBJS)\toolbar_toolbar.o \
 	$(OBJS)\toolbar_toolbar_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\toolbar_toolbar.o: ./toolbar.cpp
 	$(CXX) -c -o $@ $(TOOLBAR_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\toolbar_toolbar_rc.o: ./toolbar.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/toolbar/makefile.vc b/samples/toolbar/makefile.vc
index 498e15c328..54e36b2ba6 100644
--- a/samples/toolbar/makefile.vc
+++ b/samples/toolbar/makefile.vc
@@ -22,9 +22,10 @@ TOOLBAR_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\toolbar.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 TOOLBAR_OBJECTS =  \
 	$(OBJS)\toolbar_toolbar.obj \
 	$(OBJS)\toolbar_toolbar.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\toolbar_toolbar.obj: .\toolbar.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(TOOLBAR_CXXFLAGS) $**
 
 $(OBJS)\toolbar_toolbar.res: .\toolbar.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/toolbar/makefile.wat b/samples/toolbar/makefile.wat
index f1567cd98e..4ad5f92bf6 100644
--- a/samples/toolbar/makefile.wat
+++ b/samples/toolbar/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\toolbar_toolbar.obj :  .AUTODEPEND .\toolbar.cpp
 	$(CXX) -zq -fo=$^@ $(TOOLBAR_CXXFLAGS) $<
 
 $(OBJS)\toolbar_toolbar.res :  .AUTODEPEND .\toolbar.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/treectrl/Makefile.in b/samples/treectrl/Makefile.in
index 5d032f6946..1e03d7e86e 100644
--- a/samples/treectrl/Makefile.in
+++ b/samples/treectrl/Makefile.in
@@ -176,7 +176,7 @@ treectrl_treetest.o: $(srcdir)/treetest.cpp
 	$(CXXC) -c -o $@ $(TREECTRL_CXXFLAGS) $(srcdir)/treetest.cpp
 
 treectrl_treetest_rc.o: $(srcdir)/treetest.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/treectrl/makefile.bcc b/samples/treectrl/makefile.bcc
index e1574b1e95..d7bc2c494f 100644
--- a/samples/treectrl/makefile.bcc
+++ b/samples/treectrl/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 TREECTRL_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 TREECTRL_OBJECTS =  \
 	$(OBJS)\treectrl_treetest.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\treectrl_treetest.obj: .\treetest.cpp
 	$(CXX) -q -c -P -o$@ $(TREECTRL_CXXFLAGS) $**
 
 $(OBJS)\treectrl_treetest.res: .\treetest.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/treectrl/makefile.gcc b/samples/treectrl/makefile.gcc
index 787500db71..234304f87a 100644
--- a/samples/treectrl/makefile.gcc
+++ b/samples/treectrl/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 TREECTRL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 TREECTRL_OBJECTS =  \
 	$(OBJS)\treectrl_treetest.o \
 	$(OBJS)\treectrl_treetest_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\treectrl_treetest.o: ./treetest.cpp
 	$(CXX) -c -o $@ $(TREECTRL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\treectrl_treetest_rc.o: ./treetest.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/treectrl/makefile.vc b/samples/treectrl/makefile.vc
index e45afcf8d9..63f8facdec 100644
--- a/samples/treectrl/makefile.vc
+++ b/samples/treectrl/makefile.vc
@@ -22,9 +22,10 @@ TREECTRL_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\treectrl.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 TREECTRL_OBJECTS =  \
 	$(OBJS)\treectrl_treetest.obj \
 	$(OBJS)\treectrl_treetest.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\treectrl_treetest.obj: .\treetest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(TREECTRL_CXXFLAGS) $**
 
 $(OBJS)\treectrl_treetest.res: .\treetest.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/treectrl/makefile.wat b/samples/treectrl/makefile.wat
index 7eb0f10508..152e05dd63 100644
--- a/samples/treectrl/makefile.wat
+++ b/samples/treectrl/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\treectrl_treetest.obj :  .AUTODEPEND .\treetest.cpp
 	$(CXX) -zq -fo=$^@ $(TREECTRL_CXXFLAGS) $<
 
 $(OBJS)\treectrl_treetest.res :  .AUTODEPEND .\treetest.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/typetest/Makefile.in b/samples/typetest/Makefile.in
index fc956d3e8f..42715141f8 100644
--- a/samples/typetest/Makefile.in
+++ b/samples/typetest/Makefile.in
@@ -176,7 +176,7 @@ typetest_typetest.o: $(srcdir)/typetest.cpp
 	$(CXXC) -c -o $@ $(TYPETEST_CXXFLAGS) $(srcdir)/typetest.cpp
 
 typetest_typetest_rc.o: $(srcdir)/typetest.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/typetest/makefile.bcc b/samples/typetest/makefile.bcc
index 3a35e02fa3..5aaefebd98 100644
--- a/samples/typetest/makefile.bcc
+++ b/samples/typetest/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 TYPETEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 TYPETEST_OBJECTS =  \
 	$(OBJS)\typetest_typetest.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\typetest_typetest.obj: .\typetest.cpp
 	$(CXX) -q -c -P -o$@ $(TYPETEST_CXXFLAGS) $**
 
 $(OBJS)\typetest_typetest.res: .\typetest.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/typetest/makefile.gcc b/samples/typetest/makefile.gcc
index e156672595..a2bdbbe682 100644
--- a/samples/typetest/makefile.gcc
+++ b/samples/typetest/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 TYPETEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 TYPETEST_OBJECTS =  \
 	$(OBJS)\typetest_typetest.o \
 	$(OBJS)\typetest_typetest_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\typetest_typetest.o: ./typetest.cpp
 	$(CXX) -c -o $@ $(TYPETEST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\typetest_typetest_rc.o: ./typetest.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/typetest/makefile.vc b/samples/typetest/makefile.vc
index a596572fd5..675f37f9a3 100644
--- a/samples/typetest/makefile.vc
+++ b/samples/typetest/makefile.vc
@@ -22,9 +22,10 @@ TYPETEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\typetest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 TYPETEST_OBJECTS =  \
 	$(OBJS)\typetest_typetest.obj \
 	$(OBJS)\typetest_typetest.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\typetest_typetest.obj: .\typetest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(TYPETEST_CXXFLAGS) $**
 
 $(OBJS)\typetest_typetest.res: .\typetest.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/typetest/makefile.wat b/samples/typetest/makefile.wat
index 27e0703f19..8ced88bc57 100644
--- a/samples/typetest/makefile.wat
+++ b/samples/typetest/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\typetest_typetest.obj :  .AUTODEPEND .\typetest.cpp
 	$(CXX) -zq -fo=$^@ $(TYPETEST_CXXFLAGS) $<
 
 $(OBJS)\typetest_typetest.res :  .AUTODEPEND .\typetest.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/validate/Makefile.in b/samples/validate/Makefile.in
index 9a6977d3b7..446a3c5225 100644
--- a/samples/validate/Makefile.in
+++ b/samples/validate/Makefile.in
@@ -176,7 +176,7 @@ validate_validate.o: $(srcdir)/validate.cpp
 	$(CXXC) -c -o $@ $(VALIDATE_CXXFLAGS) $(srcdir)/validate.cpp
 
 validate_validate_rc.o: $(srcdir)/validate.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/validate/makefile.bcc b/samples/validate/makefile.bcc
index 13a4a652b7..0ede8cc93c 100644
--- a/samples/validate/makefile.bcc
+++ b/samples/validate/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 VALIDATE_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 VALIDATE_OBJECTS =  \
 	$(OBJS)\validate_validate.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -214,5 +221,5 @@ $(OBJS)\validate_validate.obj: .\validate.cpp
 	$(CXX) -q -c -P -o$@ $(VALIDATE_CXXFLAGS) $**
 
 $(OBJS)\validate_validate.res: .\validate.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/validate/makefile.gcc b/samples/validate/makefile.gcc
index 9ecb6d1c25..3bc38b82d7 100644
--- a/samples/validate/makefile.gcc
+++ b/samples/validate/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 VALIDATE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 VALIDATE_OBJECTS =  \
 	$(OBJS)\validate_validate.o \
 	$(OBJS)\validate_validate_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -207,7 +214,7 @@ $(OBJS)\validate_validate.o: ./validate.cpp
 	$(CXX) -c -o $@ $(VALIDATE_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\validate_validate_rc.o: ./validate.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/validate/makefile.vc b/samples/validate/makefile.vc
index e084512eee..12dafc0a95 100644
--- a/samples/validate/makefile.vc
+++ b/samples/validate/makefile.vc
@@ -22,9 +22,10 @@ VALIDATE_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\validate.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 VALIDATE_OBJECTS =  \
 	$(OBJS)\validate_validate.obj \
 	$(OBJS)\validate_validate.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -265,5 +272,5 @@ $(OBJS)\validate_validate.obj: .\validate.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(VALIDATE_CXXFLAGS) $**
 
 $(OBJS)\validate_validate.res: .\validate.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/validate/makefile.wat b/samples/validate/makefile.wat
index d741627d6c..d5ced51186 100644
--- a/samples/validate/makefile.wat
+++ b/samples/validate/makefile.wat
@@ -248,5 +248,5 @@ $(OBJS)\validate_validate.obj :  .AUTODEPEND .\validate.cpp
 	$(CXX) -zq -fo=$^@ $(VALIDATE_CXXFLAGS) $<
 
 $(OBJS)\validate_validate.res :  .AUTODEPEND .\validate.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/vscroll/Makefile.in b/samples/vscroll/Makefile.in
index 17be14a34b..e83968efca 100644
--- a/samples/vscroll/Makefile.in
+++ b/samples/vscroll/Makefile.in
@@ -173,7 +173,7 @@ vstest.app/Contents/PkgInfo: vstest$(EXEEXT) $(top_srcdir)/src/mac/carbon/Info.p
 @COND_PLATFORM_MACOSX_1@vstest_bundle: $(____vstest_BUNDLE_TGT_REF_DEP)
 
 vstest_sample_rc.o: $(srcdir)/../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 vstest_vstest.o: $(srcdir)/vstest.cpp
 	$(CXXC) -c -o $@ $(VSTEST_CXXFLAGS) $(srcdir)/vstest.cpp
diff --git a/samples/vscroll/makefile.bcc b/samples/vscroll/makefile.bcc
index 1db06659ac..b81014b249 100644
--- a/samples/vscroll/makefile.bcc
+++ b/samples/vscroll/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 VSTEST_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 VSTEST_OBJECTS =  \
 	$(OBJS)\vstest_vstest.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -211,7 +218,7 @@ $(OBJS)\vstest.exe: $(VSTEST_OBJECTS)  $(OBJS)\vstest_sample.res
 |
 
 $(OBJS)\vstest_sample.res: .\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples $**
 
 $(OBJS)\vstest_vstest.obj: .\vstest.cpp
 	$(CXX) -q -c -P -o$@ $(VSTEST_CXXFLAGS) $**
diff --git a/samples/vscroll/makefile.gcc b/samples/vscroll/makefile.gcc
index 9818f4b220..c99cef0fcf 100644
--- a/samples/vscroll/makefile.gcc
+++ b/samples/vscroll/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 VSTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 VSTEST_OBJECTS =  \
 	$(OBJS)\vstest_sample_rc.o \
 	$(OBJS)\vstest_vstest.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -204,7 +211,7 @@ $(OBJS)\vstest.exe: $(VSTEST_OBJECTS) $(OBJS)\vstest_sample_rc.o
 	$(CXX) -o $@ $(VSTEST_OBJECTS) $(LDFLAGS) $(__DEBUGINFO) $(__THREADSFLAG) -L$(LIBDIRNAME) -Wl,--subsystem,windows -mwindows  $(__WXLIB_CORE_p)  $(__WXLIB_BASE_p)  $(__WXLIB_MONO_p) $(__LIB_TIFF_p) $(__LIB_JPEG_p) $(__LIB_PNG_p) -lwxzlib$(WXDEBUGFLAG)  -lwxregex$(WXUNICODEFLAG)$(WXDEBUGFLAG) -lwxexpat$(WXDEBUGFLAG) $(EXTRALIBS_FOR_BASE) $(__UNICOWS_LIB_p) -lkernel32 -luser32 -lgdi32 -lcomdlg32 -lwinspool -lwinmm -lshell32 -lcomctl32 -lole32 -loleaut32 -luuid -lrpcrt4 -ladvapi32 -lwsock32 -lodbc32
 
 $(OBJS)\vstest_sample_rc.o: ./../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples
 
 $(OBJS)\vstest_vstest.o: ./vstest.cpp
 	$(CXX) -c -o $@ $(VSTEST_CXXFLAGS) $(CPPDEPS) $<
diff --git a/samples/vscroll/makefile.vc b/samples/vscroll/makefile.vc
index 3d4a106be3..dc97ce6246 100644
--- a/samples/vscroll/makefile.vc
+++ b/samples/vscroll/makefile.vc
@@ -22,9 +22,10 @@ VSTEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\vstest.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 VSTEST_OBJECTS =  \
 	$(OBJS)\vstest_sample.res \
 	$(OBJS)\vstest_vstest.obj
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -262,7 +269,7 @@ $(OBJS)\vstest.exe: $(VSTEST_OBJECTS) $(OBJS)\vstest_sample.res
 <<
 
 $(OBJS)\vstest_sample.res: .\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples $**
 
 $(OBJS)\vstest_vstest.obj: .\vstest.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(VSTEST_CXXFLAGS) $**
diff --git a/samples/vscroll/makefile.wat b/samples/vscroll/makefile.wat
index e9b253816e..0820a4268d 100644
--- a/samples/vscroll/makefile.wat
+++ b/samples/vscroll/makefile.wat
@@ -245,7 +245,7 @@ $(OBJS)\vstest.exe :  $(VSTEST_OBJECTS) $(OBJS)\vstest_sample.res
 	wlink @$(OBJS)\vstest.lbc
 
 $(OBJS)\vstest_sample.res :  .AUTODEPEND .\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples $<
 
 $(OBJS)\vstest_vstest.obj :  .AUTODEPEND .\vstest.cpp
 	$(CXX) -zq -fo=$^@ $(VSTEST_CXXFLAGS) $<
diff --git a/samples/widgets/Makefile.in b/samples/widgets/Makefile.in
index 0d213225c3..79c341b93d 100644
--- a/samples/widgets/Makefile.in
+++ b/samples/widgets/Makefile.in
@@ -220,7 +220,7 @@ widgets_widgets.o: $(srcdir)/widgets.cpp
 	$(CXXC) -c -o $@ $(WIDGETS_CXXFLAGS) $(srcdir)/widgets.cpp
 
 widgets_widgets_rc.o: $(srcdir)/widgets.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/widgets/makefile.bcc b/samples/widgets/makefile.bcc
index 4edeff129a..cf9d933193 100644
--- a/samples/widgets/makefile.bcc
+++ b/samples/widgets/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 WIDGETS_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 WIDGETS_OBJECTS =  \
 	$(OBJS)\widgets_button.obj \
 	$(OBJS)\widgets_checkbox.obj \
@@ -153,6 +154,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -258,5 +265,5 @@ $(OBJS)\widgets_widgets.obj: .\widgets.cpp
 	$(CXX) -q -c -P -o$@ $(WIDGETS_CXXFLAGS) $**
 
 $(OBJS)\widgets_widgets.res: .\widgets.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/widgets/makefile.gcc b/samples/widgets/makefile.gcc
index e6e1fa3e7f..41aa0b0389 100644
--- a/samples/widgets/makefile.gcc
+++ b/samples/widgets/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 WIDGETS_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 WIDGETS_OBJECTS =  \
 	$(OBJS)\widgets_button.o \
 	$(OBJS)\widgets_checkbox.o \
@@ -144,6 +145,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -251,7 +258,7 @@ $(OBJS)\widgets_widgets.o: ./widgets.cpp
 	$(CXX) -c -o $@ $(WIDGETS_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\widgets_widgets_rc.o: ./widgets.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/widgets/makefile.vc b/samples/widgets/makefile.vc
index 390f3917ca..fb4c1c5529 100644
--- a/samples/widgets/makefile.vc
+++ b/samples/widgets/makefile.vc
@@ -22,9 +22,10 @@ WIDGETS_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\widgets.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 WIDGETS_OBJECTS =  \
 	$(OBJS)\widgets_button.obj \
 	$(OBJS)\widgets_checkbox.obj \
@@ -219,6 +220,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -309,5 +316,5 @@ $(OBJS)\widgets_widgets.obj: .\widgets.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(WIDGETS_CXXFLAGS) $**
 
 $(OBJS)\widgets_widgets.res: .\widgets.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/widgets/makefile.wat b/samples/widgets/makefile.wat
index c5cbc3091c..f46b0fb129 100644
--- a/samples/widgets/makefile.wat
+++ b/samples/widgets/makefile.wat
@@ -292,5 +292,5 @@ $(OBJS)\widgets_widgets.obj :  .AUTODEPEND .\widgets.cpp
 	$(CXX) -zq -fo=$^@ $(WIDGETS_CXXFLAGS) $<
 
 $(OBJS)\widgets_widgets.res :  .AUTODEPEND .\widgets.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/wizard/Makefile.in b/samples/wizard/Makefile.in
index c4e4ac00cb..b4f9c62e98 100644
--- a/samples/wizard/Makefile.in
+++ b/samples/wizard/Makefile.in
@@ -181,7 +181,7 @@ wizard_wizard.o: $(srcdir)/wizard.cpp
 	$(CXXC) -c -o $@ $(WIZARD_CXXFLAGS) $(srcdir)/wizard.cpp
 
 wizard_wizard_rc.o: $(srcdir)/wizard.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/wizard/makefile.bcc b/samples/wizard/makefile.bcc
index 32866cb9b0..9351b752c9 100644
--- a/samples/wizard/makefile.bcc
+++ b/samples/wizard/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 WIZARD_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 WIZARD_OBJECTS =  \
 	$(OBJS)\wizard_wizard.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\wizard_wizard.obj: .\wizard.cpp
 	$(CXX) -q -c -P -o$@ $(WIZARD_CXXFLAGS) $**
 
 $(OBJS)\wizard_wizard.res: .\wizard.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/wizard/makefile.gcc b/samples/wizard/makefile.gcc
index ad149e84f2..3677c6b8f4 100644
--- a/samples/wizard/makefile.gcc
+++ b/samples/wizard/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 WIZARD_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 WIZARD_OBJECTS =  \
 	$(OBJS)\wizard_wizard.o \
 	$(OBJS)\wizard_wizard_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +218,7 @@ $(OBJS)\wizard_wizard.o: ./wizard.cpp
 	$(CXX) -c -o $@ $(WIZARD_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\wizard_wizard_rc.o: ./wizard.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/samples/wizard/makefile.vc b/samples/wizard/makefile.vc
index e04e0a778c..92b2d2a2bb 100644
--- a/samples/wizard/makefile.vc
+++ b/samples/wizard/makefile.vc
@@ -22,9 +22,10 @@ WIZARD_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\wizard.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 WIZARD_OBJECTS =  \
 	$(OBJS)\wizard_wizard.obj \
 	$(OBJS)\wizard_wizard.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\wizard_wizard.obj: .\wizard.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(WIZARD_CXXFLAGS) $**
 
 $(OBJS)\wizard_wizard.res: .\wizard.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/wizard/makefile.wat b/samples/wizard/makefile.wat
index 66ca1d575d..f1ddbf4cc6 100644
--- a/samples/wizard/makefile.wat
+++ b/samples/wizard/makefile.wat
@@ -253,5 +253,5 @@ $(OBJS)\wizard_wizard.obj :  .AUTODEPEND .\wizard.cpp
 	$(CXX) -zq -fo=$^@ $(WIZARD_CXXFLAGS) $<
 
 $(OBJS)\wizard_wizard.res :  .AUTODEPEND .\wizard.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/samples/xrc/Makefile.in b/samples/xrc/Makefile.in
index 334bfc15d0..33c0da0c22 100644
--- a/samples/xrc/Makefile.in
+++ b/samples/xrc/Makefile.in
@@ -216,7 +216,7 @@ xrcdemo_custclas.o: $(srcdir)/custclas.cpp
 	$(CXXC) -c -o $@ $(XRCDEMO_CXXFLAGS) $(srcdir)/custclas.cpp
 
 xrcdemo_xrcdemo_rc.o: $(srcdir)/xrcdemo.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/samples/xrc/makefile.bcc b/samples/xrc/makefile.bcc
index 66982adb5b..adce61adf0 100644
--- a/samples/xrc/makefile.bcc
+++ b/samples/xrc/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 XRCDEMO_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 XRCDEMO_OBJECTS =  \
 	$(OBJS)\xrcdemo_xrcdemo.obj \
 	$(OBJS)\xrcdemo_myframe.obj \
@@ -145,6 +146,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -246,5 +253,5 @@ $(OBJS)\xrcdemo_custclas.obj: .\custclas.cpp
 	$(CXX) -q -c -P -o$@ $(XRCDEMO_CXXFLAGS) $**
 
 $(OBJS)\xrcdemo_xrcdemo.res: .\xrcdemo.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/samples/xrc/makefile.gcc b/samples/xrc/makefile.gcc
index 6382979a0d..1de321adf7 100644
--- a/samples/xrc/makefile.gcc
+++ b/samples/xrc/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 XRCDEMO_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 XRCDEMO_OBJECTS =  \
 	$(OBJS)\xrcdemo_xrcdemo.o \
 	$(OBJS)\xrcdemo_myframe.o \
@@ -136,6 +137,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -239,7 +246,7 @@ $(OBJS)\xrcdemo_custclas.o: ./custclas.cpp
 	$(CXX) -c -o $@ $(XRCDEMO_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\xrcdemo_xrcdemo_rc.o: ./xrcdemo.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/samples/xrc/makefile.vc b/samples/xrc/makefile.vc
index 798e6fbb95..ef71000fd8 100644
--- a/samples/xrc/makefile.vc
+++ b/samples/xrc/makefile.vc
@@ -22,9 +22,10 @@ XRCDEMO_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\xrcdemo.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 XRCDEMO_OBJECTS =  \
 	$(OBJS)\xrcdemo_xrcdemo.obj \
 	$(OBJS)\xrcdemo_myframe.obj \
@@ -211,6 +212,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -297,5 +304,5 @@ $(OBJS)\xrcdemo_custclas.obj: .\custclas.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(XRCDEMO_CXXFLAGS) $**
 
 $(OBJS)\xrcdemo_xrcdemo.res: .\xrcdemo.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/samples/xrc/makefile.wat b/samples/xrc/makefile.wat
index 79a4bd50c2..c07af767fb 100644
--- a/samples/xrc/makefile.wat
+++ b/samples/xrc/makefile.wat
@@ -284,5 +284,5 @@ $(OBJS)\xrcdemo_custclas.obj :  .AUTODEPEND .\custclas.cpp
 	$(CXX) -zq -fo=$^@ $(XRCDEMO_CXXFLAGS) $<
 
 $(OBJS)\xrcdemo_xrcdemo.res :  .AUTODEPEND .\xrcdemo.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/src/stc/Makefile.in b/src/stc/Makefile.in
index 8d40cbee40..4a08ba7126 100644
--- a/src/stc/Makefile.in
+++ b/src/stc/Makefile.in
@@ -375,7 +375,7 @@ distclean: clean
 @COND_SHARED_0@	$(INSTALL_DATA) $(LIBDIRNAME)/$(LIBPREFIX)wx_$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_stc-$(WX_RELEASE)$(HOST_SUFFIX)$(LIBEXT) $(DESTDIR)$(libdir)
 
 stcdll_version_rc.o: $(srcdir)/../../../src/msw/version.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)  --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_stc$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_1)  $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1)   --define WXDLLNAME=$(WXDLLNAMEPREFIXGUI)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_stc$(WXCOMPILER)$(VENDORTAG)$(WXDLLVERSIONTAG) --include-dir $(top_srcdir)/include
 
 stcdll_PlatWX.o: $(srcdir)/PlatWX.cpp
 	$(CXXC) -c -o $@ $(STCDLL_CXXFLAGS) $(srcdir)/PlatWX.cpp
diff --git a/tests/Makefile.in b/tests/Makefile.in
index 00ae960e11..8b28968743 100644
--- a/tests/Makefile.in
+++ b/tests/Makefile.in
@@ -349,7 +349,7 @@ test_uris.o: $(srcdir)/uris/uris.cpp $(TEST_ODEP)
 	$(CXXC) -c -o $@ $(TEST_CXXFLAGS) $(srcdir)/uris/uris.cpp
 
 test_gui_sample_rc.o: $(srcdir)/../samples/sample.rc $(TEST_GUI_ODEP)
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_5)  $(__EXCEPTIONS_DEFINE_p_5) $(__RTTI_DEFINE_p_5) $(__THREAD_DEFINE_p_5)  --include-dir $(srcdir) $(__DLLFLAG_p_5) --include-dir $(srcdir)/../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_5)  $(__EXCEPTIONS_DEFINE_p_5) $(__RTTI_DEFINE_p_5) $(__THREAD_DEFINE_p_5)   --include-dir $(srcdir) $(__DLLFLAG_p_5) --include-dir $(srcdir)/../samples --include-dir $(top_srcdir)/include
 
 test_gui_test.o: $(srcdir)/test.cpp $(TEST_GUI_ODEP)
 	$(CXXC) -c -o $@ $(TEST_GUI_CXXFLAGS) $(srcdir)/test.cpp
diff --git a/tests/makefile.bcc b/tests/makefile.bcc
index abf1182929..5b827c2a2e 100644
--- a/tests/makefile.bcc
+++ b/tests/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 TEST_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_0) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\include -I$(SETUPHDIR) -I. \
-	$(__DLLFLAG_p) -DwxUSE_GUI=0 $(CPPUNIT_CFLAGS) -Hu \
-	-H=$(OBJS)\testprec_test.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	$(CPPUNIT_CFLAGS) -Hu -H=$(OBJS)\testprec_test.csm $(CPPFLAGS) $(CXXFLAGS)
 TEST_OBJECTS =  \
 	$(OBJS)\test_dummy.obj \
 	$(OBJS)\test_test.obj \
@@ -71,9 +71,10 @@ TEST_OBJECTS =  \
 TEST_GUI_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_0) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\include -I$(SETUPHDIR) -I. \
-	$(__DLLFLAG_p) -I.\..\samples -DNOPCH $(CPPUNIT_CFLAGS) -Hu \
-	-H=$(OBJS)\testprec_test_gui.csm $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\samples -DNOPCH \
+	$(CPPUNIT_CFLAGS) -Hu -H=$(OBJS)\testprec_test_gui.csm $(CPPFLAGS) \
+	$(CXXFLAGS)
 TEST_GUI_OBJECTS =  \
 	$(OBJS)\test_gui_dummy.obj \
 	$(OBJS)\test_gui_test.obj \
@@ -144,6 +145,9 @@ __THREAD_DEFINE_p_3 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_3 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_3 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p_3 = -dWXUSINGDLL
 !endif
@@ -202,6 +206,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -383,7 +390,7 @@ $(OBJS)\test_uris.obj: .\uris\uris.cpp
 	$(CXX) -q -c -P -o$@ $(TEST_CXXFLAGS) $**
 
 $(OBJS)\test_gui_sample.res: .\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_3) $(__DEBUG_DEFINE_p_3) $(__EXCEPTIONS_DEFINE_p_3) $(__RTTI_DEFINE_p_3) $(__THREAD_DEFINE_p_3) $(__UNICODE_DEFINE_p_3) -i.\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_3) -i.\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_3) $(__DEBUG_DEFINE_p_3) $(__EXCEPTIONS_DEFINE_p_3) $(__RTTI_DEFINE_p_3) $(__THREAD_DEFINE_p_3) $(__UNICODE_DEFINE_p_3) $(__MSLU_DEFINE_p_3) -i.\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_3) -i.\..\samples $**
 
 $(OBJS)\test_gui_dummy.obj: .\dummy.cpp
 	$(CXX) -q -c -P -o$@ $(TEST_GUI_CXXFLAGS) -H $**
diff --git a/tests/makefile.gcc b/tests/makefile.gcc
index 68f30d0903..b774ef07fc 100644
--- a/tests/makefile.gcc
+++ b/tests/makefile.gcc
@@ -22,8 +22,8 @@ SETUPHDIR = \
 TEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -DwxUSE_GUI=0 $(CPPUNIT_CFLAGS) $(__RTTIFLAG) \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(CPPUNIT_CFLAGS) $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TEST_OBJECTS =  \
 	$(OBJS)\test_dummy.o \
@@ -63,10 +63,10 @@ TEST_OBJECTS =  \
 TEST_GUI_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\include -I$(SETUPHDIR) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\samples -DNOPCH $(CPPUNIT_CFLAGS) \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\samples \
+	-DNOPCH $(CPPUNIT_CFLAGS) $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TEST_GUI_OBJECTS =  \
 	$(OBJS)\test_gui_sample_rc.o \
 	$(OBJS)\test_gui_dummy.o \
@@ -145,6 +145,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_3 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_3 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p_3 = --define WXUSINGDLL
 endif
@@ -193,6 +196,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -369,7 +375,7 @@ $(OBJS)\test_uris.o: ./uris/uris.cpp
 	$(CXX) -c -o $@ $(TEST_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\test_gui_sample_rc.o: ./../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_3) $(__DEBUG_DEFINE_p_3) $(__EXCEPTIONS_DEFINE_p_3) $(__RTTI_DEFINE_p_3) $(__THREAD_DEFINE_p_3) $(__UNICODE_DEFINE_p_3) --include-dir ./../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_3) --include-dir ./../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_3) $(__DEBUG_DEFINE_p_3) $(__EXCEPTIONS_DEFINE_p_3) $(__RTTI_DEFINE_p_3) $(__THREAD_DEFINE_p_3) $(__UNICODE_DEFINE_p_3) $(__MSLU_DEFINE_p_3) --include-dir ./../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_3) --include-dir ./../samples
 
 $(OBJS)\test_gui_dummy.o: ./dummy.cpp
 	$(CXX) -c -o $@ $(TEST_GUI_CXXFLAGS) $(CPPDEPS) $<
diff --git a/tests/makefile.vc b/tests/makefile.vc
index 97d2564640..49694b7e94 100644
--- a/tests/makefile.vc
+++ b/tests/makefile.vc
@@ -22,9 +22,10 @@ TEST_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME) /DWIN32 $(__DEBUGINFO) \
 	/Fd$(OBJS)\test.pdb $(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) \
 	$(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) /I.\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) \
-	/D_CONSOLE /DwxUSE_GUI=0 $(CPPUNIT_CFLAGS) $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	/Yu"testprec.h" /Fp"$(OBJS)\testprec_test.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) /I.\..\include /I$(SETUPHDIR) /W4 \
+	/I. $(__DLLFLAG_p) /D_CONSOLE /DwxUSE_GUI=0 $(CPPUNIT_CFLAGS) $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) /Yu"testprec.h" /Fp"$(OBJS)\testprec_test.pch" \
+	$(CPPFLAGS) $(CXXFLAGS)
 TEST_OBJECTS =  \
 	$(OBJS)\test_dummy.obj \
 	$(OBJS)\test_test.obj \
@@ -64,10 +65,10 @@ TEST_GUI_CXXFLAGS = /M$(__RUNTIME_LIBS_23)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) /Fd$(OBJS)\test_gui.pdb $(____DEBUGRUNTIME) \
 	$(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\include /I$(SETUPHDIR) /W4 \
-	/I. $(__DLLFLAG_p) /I.\..\samples /DNOPCH $(CPPUNIT_CFLAGS) /D_CONSOLE \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) /Yu"testprec.h" \
-	/Fp"$(OBJS)\testprec_test_gui.pch" $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /I.\..\samples /DNOPCH \
+	$(CPPUNIT_CFLAGS) /D_CONSOLE $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	/Yu"testprec.h" /Fp"$(OBJS)\testprec_test_gui.pch" $(CPPFLAGS) $(CXXFLAGS)
 TEST_GUI_OBJECTS =  \
 	$(OBJS)\test_gui_sample.res \
 	$(OBJS)\test_gui_dummy.obj \
@@ -169,6 +170,9 @@ __THREAD_DEFINE_p_3 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_3 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_3 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p_3 = /d WXUSINGDLL
 !endif
@@ -275,6 +279,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -438,7 +445,7 @@ $(OBJS)\test_uris.obj: .\uris\uris.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(TEST_CXXFLAGS) $**
 
 $(OBJS)\test_gui_sample.res: .\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_17_p_1) $(__NO_VC_CRTDBG_p_3)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_3) $(__DEBUG_DEFINE_p_3) $(__EXCEPTIONS_DEFINE_p_3) $(__RTTI_DEFINE_p_3) $(__THREAD_DEFINE_p_3) $(__UNICODE_DEFINE_p_3) /i .\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_3) /i .\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_17_p_1) $(__NO_VC_CRTDBG_p_3)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_3) $(__DEBUG_DEFINE_p_3) $(__EXCEPTIONS_DEFINE_p_3) $(__RTTI_DEFINE_p_3) $(__THREAD_DEFINE_p_3) $(__UNICODE_DEFINE_p_3) $(__MSLU_DEFINE_p_3) /i .\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_3) /i .\..\samples $**
 
 $(OBJS)\test_gui_dummy.obj: .\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(TEST_GUI_CXXFLAGS) /Yctestprec.h $**
diff --git a/tests/makefile.wat b/tests/makefile.wat
index c0c6ae2553..d0fe7719c1 100644
--- a/tests/makefile.wat
+++ b/tests/makefile.wat
@@ -421,7 +421,7 @@ $(OBJS)\test_uris.obj :  .AUTODEPEND .\uris\uris.cpp
 	$(CXX) -zq -fo=$^@ $(TEST_CXXFLAGS) $<
 
 $(OBJS)\test_gui_sample.res :  .AUTODEPEND .\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\samples $<
 
 $(OBJS)\test_gui_dummy.obj :  .AUTODEPEND .\dummy.cpp
 	$(CXX) -zq -fo=$^@ $(TEST_GUI_CXXFLAGS) $<
diff --git a/utils/HelpGen/src/makefile.bcc b/utils/HelpGen/src/makefile.bcc
index f97775a55f..d0fa91a8ca 100644
--- a/utils/HelpGen/src/makefile.bcc
+++ b/utils/HelpGen/src/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 HELPGEN_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	$(CPPFLAGS) $(CXXFLAGS)
 HELPGEN_OBJECTS =  \
 	$(OBJS)\HelpGen_HelpGen.obj \
 	$(OBJS)\HelpGen_cjparser.obj \
@@ -128,6 +129,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
diff --git a/utils/HelpGen/src/makefile.gcc b/utils/HelpGen/src/makefile.gcc
index b3fabf29c1..e38df984c8 100644
--- a/utils/HelpGen/src/makefile.gcc
+++ b/utils/HelpGen/src/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 HELPGEN_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 HELPGEN_OBJECTS =  \
 	$(OBJS)\HelpGen_HelpGen.o \
 	$(OBJS)\HelpGen_cjparser.o \
@@ -116,6 +117,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
diff --git a/utils/HelpGen/src/makefile.vc b/utils/HelpGen/src/makefile.vc
index c20a8bc6cb..0dbbef9ec2 100644
--- a/utils/HelpGen/src/makefile.vc
+++ b/utils/HelpGen/src/makefile.vc
@@ -22,9 +22,9 @@ HELPGEN_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\HelpGen.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_CONSOLE /DwxUSE_GUI=0 $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_CONSOLE \
+	/DwxUSE_GUI=0 $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 HELPGEN_OBJECTS =  \
 	$(OBJS)\HelpGen_HelpGen.obj \
 	$(OBJS)\HelpGen_cjparser.obj \
@@ -175,6 +175,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
diff --git a/utils/configtool/src/Makefile.in b/utils/configtool/src/Makefile.in
index e1748da5b0..32826d7e92 100644
--- a/utils/configtool/src/Makefile.in
+++ b/utils/configtool/src/Makefile.in
@@ -182,7 +182,7 @@ data:
 	done
 
 wxconfigtool_sample_rc.o: $(srcdir)/../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 wxconfigtool_wxconfigtool.o: $(srcdir)/wxconfigtool.cpp
 	$(CXXC) -c -o $@ $(WXCONFIGTOOL_CXXFLAGS) $(srcdir)/wxconfigtool.cpp
diff --git a/utils/configtool/src/makefile.bcc b/utils/configtool/src/makefile.bcc
index 4aaa93b793..cf0d5f2cf3 100644
--- a/utils/configtool/src/makefile.bcc
+++ b/utils/configtool/src/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 WXCONFIGTOOL_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 WXCONFIGTOOL_OBJECTS =  \
 	$(OBJS)\wxconfigtool_wxconfigtool.obj \
 	$(OBJS)\wxconfigtool_appsettings.obj \
@@ -156,6 +156,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -241,7 +247,7 @@ data:
 	for %f in (wxwin250.wxs) do if not exist $(OBJS)\%f copy .\..\configs\%f $(OBJS)
 
 $(OBJS)\wxconfigtool_sample.res: .\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
 
 $(OBJS)\wxconfigtool_wxconfigtool.obj: .\wxconfigtool.cpp
 	$(CXX) -q -c -P -o$@ $(WXCONFIGTOOL_CXXFLAGS) $**
diff --git a/utils/configtool/src/makefile.gcc b/utils/configtool/src/makefile.gcc
index 38d51133e0..be0f8529c5 100644
--- a/utils/configtool/src/makefile.gcc
+++ b/utils/configtool/src/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 WXCONFIGTOOL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 WXCONFIGTOOL_OBJECTS =  \
 	$(OBJS)\wxconfigtool_sample_rc.o \
 	$(OBJS)\wxconfigtool_wxconfigtool.o \
@@ -147,6 +147,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -234,7 +240,7 @@ data:
 	for %%f in (wxwin250.wxs) do if not exist $(OBJS)\%%f copy .\..\configs\%%f $(OBJS)
 
 $(OBJS)\wxconfigtool_sample_rc.o: ./../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
 
 $(OBJS)\wxconfigtool_wxconfigtool.o: ./wxconfigtool.cpp
 	$(CXX) -c -o $@ $(WXCONFIGTOOL_CXXFLAGS) $(CPPDEPS) $<
diff --git a/utils/configtool/src/makefile.vc b/utils/configtool/src/makefile.vc
index 187a0fd2ef..facfce755d 100644
--- a/utils/configtool/src/makefile.vc
+++ b/utils/configtool/src/makefile.vc
@@ -22,9 +22,10 @@ WXCONFIGTOOL_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\wxconfigtool.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 WXCONFIGTOOL_OBJECTS =  \
 	$(OBJS)\wxconfigtool_sample.res \
 	$(OBJS)\wxconfigtool_wxconfigtool.obj \
@@ -221,6 +222,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -291,7 +298,7 @@ data:
 	for %f in (wxwin250.wxs) do if not exist $(OBJS)\%f copy .\..\configs\%f $(OBJS)
 
 $(OBJS)\wxconfigtool_sample.res: .\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
 
 $(OBJS)\wxconfigtool_wxconfigtool.obj: .\wxconfigtool.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(WXCONFIGTOOL_CXXFLAGS) $**
diff --git a/utils/configtool/src/makefile.wat b/utils/configtool/src/makefile.wat
index 96bdec4520..8790e92f19 100644
--- a/utils/configtool/src/makefile.wat
+++ b/utils/configtool/src/makefile.wat
@@ -278,7 +278,7 @@ data : .SYMBOLIC
 	for %f in (wxwin250.wxs) do if not exist $(OBJS)\%f copy .\..\configs\%f $(OBJS)
 
 $(OBJS)\wxconfigtool_sample.res :  .AUTODEPEND .\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
 
 $(OBJS)\wxconfigtool_wxconfigtool.obj :  .AUTODEPEND .\wxconfigtool.cpp
 	$(CXX) -zq -fo=$^@ $(WXCONFIGTOOL_CXXFLAGS) $<
diff --git a/utils/emulator/src/Makefile.in b/utils/emulator/src/Makefile.in
index 99ca3017e2..26f670cafb 100644
--- a/utils/emulator/src/Makefile.in
+++ b/utils/emulator/src/Makefile.in
@@ -154,7 +154,7 @@ data:
 	done
 
 wxemulator_sample_rc.o: $(srcdir)/../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 wxemulator_emulator.o: $(srcdir)/emulator.cpp
 	$(CXXC) -c -o $@ $(WXEMULATOR_CXXFLAGS) $(srcdir)/emulator.cpp
diff --git a/utils/emulator/src/makefile.bcc b/utils/emulator/src/makefile.bcc
index 7eb6c253bf..d5febe87c3 100644
--- a/utils/emulator/src/makefile.bcc
+++ b/utils/emulator/src/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 WXEMULATOR_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 WXEMULATOR_OBJECTS =  \
 	$(OBJS)\wxemulator_emulator.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -216,7 +222,7 @@ data:
 	for %f in (default.wxe ipaq.wxe bluegradient.jpg ipaq01.jpg) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\wxemulator_sample.res: .\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples $**
 
 $(OBJS)\wxemulator_emulator.obj: .\emulator.cpp
 	$(CXX) -q -c -P -o$@ $(WXEMULATOR_CXXFLAGS) $**
diff --git a/utils/emulator/src/makefile.gcc b/utils/emulator/src/makefile.gcc
index 5a1d70ec15..bb71351daf 100644
--- a/utils/emulator/src/makefile.gcc
+++ b/utils/emulator/src/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 WXEMULATOR_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 WXEMULATOR_OBJECTS =  \
 	$(OBJS)\wxemulator_sample_rc.o \
 	$(OBJS)\wxemulator_emulator.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -209,7 +215,7 @@ data:
 	for %%f in (default.wxe ipaq.wxe bluegradient.jpg ipaq01.jpg) do if not exist $(OBJS)\%%f copy .\%%f $(OBJS)
 
 $(OBJS)\wxemulator_sample_rc.o: ./../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples
 
 $(OBJS)\wxemulator_emulator.o: ./emulator.cpp
 	$(CXX) -c -o $@ $(WXEMULATOR_CXXFLAGS) $(CPPDEPS) $<
diff --git a/utils/emulator/src/makefile.vc b/utils/emulator/src/makefile.vc
index f1fa659698..a73b606aa2 100644
--- a/utils/emulator/src/makefile.vc
+++ b/utils/emulator/src/makefile.vc
@@ -22,9 +22,10 @@ WXEMULATOR_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\wxemulator.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 WXEMULATOR_OBJECTS =  \
 	$(OBJS)\wxemulator_sample.res \
 	$(OBJS)\wxemulator_emulator.obj
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -266,7 +273,7 @@ data:
 	for %f in (default.wxe ipaq.wxe bluegradient.jpg ipaq01.jpg) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\wxemulator_sample.res: .\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples $**
 
 $(OBJS)\wxemulator_emulator.obj: .\emulator.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(WXEMULATOR_CXXFLAGS) $**
diff --git a/utils/emulator/src/makefile.wat b/utils/emulator/src/makefile.wat
index aaa5c5c6a8..edc9f485ac 100644
--- a/utils/emulator/src/makefile.wat
+++ b/utils/emulator/src/makefile.wat
@@ -249,7 +249,7 @@ data : .SYMBOLIC
 	for %f in (default.wxe ipaq.wxe bluegradient.jpg ipaq01.jpg) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\wxemulator_sample.res :  .AUTODEPEND .\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
 
 $(OBJS)\wxemulator_emulator.obj :  .AUTODEPEND .\emulator.cpp
 	$(CXX) -zq -fo=$^@ $(WXEMULATOR_CXXFLAGS) $<
diff --git a/utils/helpview/src/Makefile.in b/utils/helpview/src/Makefile.in
index 708cd41f8e..4bb32777ca 100644
--- a/utils/helpview/src/Makefile.in
+++ b/utils/helpview/src/Makefile.in
@@ -173,7 +173,7 @@ helpview_helpview.o: $(srcdir)/helpview.cpp
 	$(CXXC) -c -o $@ $(HELPVIEW_CXXFLAGS) $(srcdir)/helpview.cpp
 
 helpview_helpview_rc.o: $(srcdir)/helpview.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/utils/helpview/src/makefile.bcc b/utils/helpview/src/makefile.bcc
index 8944370f80..1f627307c3 100644
--- a/utils/helpview/src/makefile.bcc
+++ b/utils/helpview/src/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 HELPVIEW_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 HELPVIEW_OBJECTS =  \
 	$(OBJS)\helpview_helpview.obj
 
@@ -143,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -227,5 +233,5 @@ $(OBJS)\helpview_helpview.obj: .\helpview.cpp
 	$(CXX) -q -c -P -o$@ $(HELPVIEW_CXXFLAGS) $**
 
 $(OBJS)\helpview_helpview.res: .\helpview.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\..\samples -dNOPCH $**
 
diff --git a/utils/helpview/src/makefile.gcc b/utils/helpview/src/makefile.gcc
index 9c6c3fc78c..c92446fe60 100644
--- a/utils/helpview/src/makefile.gcc
+++ b/utils/helpview/src/makefile.gcc
@@ -22,10 +22,10 @@ SETUPHDIR = \
 HELPVIEW_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 HELPVIEW_OBJECTS =  \
 	$(OBJS)\helpview_helpview.o \
 	$(OBJS)\helpview_helpview_rc.o
@@ -134,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -220,7 +226,7 @@ $(OBJS)\helpview_helpview.o: ./helpview.cpp
 	$(CXX) -c -o $@ $(HELPVIEW_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\helpview_helpview_rc.o: ./helpview.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../../samples --define NOPCH
 
 .PHONY: all clean data
 
diff --git a/utils/helpview/src/makefile.vc b/utils/helpview/src/makefile.vc
index 647a9d1634..06b351a6b6 100644
--- a/utils/helpview/src/makefile.vc
+++ b/utils/helpview/src/makefile.vc
@@ -22,9 +22,10 @@ HELPVIEW_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\helpview.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) \
+	$(CPPFLAGS) $(CXXFLAGS)
 HELPVIEW_OBJECTS =  \
 	$(OBJS)\helpview_helpview.obj \
 	$(OBJS)\helpview_helpview.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -277,5 +284,5 @@ $(OBJS)\helpview_helpview.obj: .\helpview.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(HELPVIEW_CXXFLAGS) $**
 
 $(OBJS)\helpview_helpview.res: .\helpview.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\..\samples /d NOPCH $**
 
diff --git a/utils/helpview/src/makefile.wat b/utils/helpview/src/makefile.wat
index 5f4419b1b4..bbd1845cb7 100644
--- a/utils/helpview/src/makefile.wat
+++ b/utils/helpview/src/makefile.wat
@@ -262,5 +262,5 @@ $(OBJS)\helpview_helpview.obj :  .AUTODEPEND .\helpview.cpp
 	$(CXX) -zq -fo=$^@ $(HELPVIEW_CXXFLAGS) $<
 
 $(OBJS)\helpview_helpview.res :  .AUTODEPEND .\helpview.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples -dNOPCH $<
 
diff --git a/utils/hhp2cached/Makefile.in b/utils/hhp2cached/Makefile.in
index 5264ec3463..82cfb50433 100644
--- a/utils/hhp2cached/Makefile.in
+++ b/utils/hhp2cached/Makefile.in
@@ -157,7 +157,7 @@ hhp2cached_hhp2cached.o: $(srcdir)/hhp2cached.cpp
 	$(CXXC) -c -o $@ $(HHP2CACHED_CXXFLAGS) $(srcdir)/hhp2cached.cpp
 
 hhp2cached_hhp2cached_rc.o: $(srcdir)/hhp2cached.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)  --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_2)  $(__EXCEPTIONS_DEFINE_p_2) $(__RTTI_DEFINE_p_2) $(__THREAD_DEFINE_p_2)   --include-dir $(srcdir) $(__DLLFLAG_p_2) --include-dir $(srcdir)/../../samples --include-dir $(top_srcdir)/include
 
 
 # Include dependency info, if present:
diff --git a/utils/hhp2cached/makefile.bcc b/utils/hhp2cached/makefile.bcc
index 1baf2c6d07..263e3065c6 100644
--- a/utils/hhp2cached/makefile.bcc
+++ b/utils/hhp2cached/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 HHP2CACHED_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH \
+	$(CPPFLAGS) $(CXXFLAGS)
 HHP2CACHED_OBJECTS =  \
 	$(OBJS)\hhp2cached_hhp2cached.obj
 
@@ -142,6 +143,12 @@ __UNICODE_DEFINE_p = -D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -218,5 +225,5 @@ $(OBJS)\hhp2cached_hhp2cached.obj: .\hhp2cached.cpp
 	$(CXX) -q -c -P -o$@ $(HHP2CACHED_CXXFLAGS) $**
 
 $(OBJS)\hhp2cached_hhp2cached.res: .\hhp2cached.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) -i.\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_1) -i.\..\..\samples -dNOPCH $**
 
diff --git a/utils/hhp2cached/makefile.gcc b/utils/hhp2cached/makefile.gcc
index bd243bd9a6..fc58cc6e79 100644
--- a/utils/hhp2cached/makefile.gcc
+++ b/utils/hhp2cached/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 HHP2CACHED_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\samples \
+	-DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 HHP2CACHED_OBJECTS =  \
 	$(OBJS)\hhp2cached_hhp2cached.o \
 	$(OBJS)\hhp2cached_hhp2cached_rc.o
@@ -133,6 +134,12 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_1 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_1 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -211,7 +218,7 @@ $(OBJS)\hhp2cached_hhp2cached.o: ./hhp2cached.cpp
 	$(CXX) -c -o $@ $(HHP2CACHED_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\hhp2cached_hhp2cached_rc.o: ./hhp2cached.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) --include-dir ./../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_1) --include-dir ./../../samples --define NOPCH
 
 .PHONY: all clean
 
diff --git a/utils/hhp2cached/makefile.vc b/utils/hhp2cached/makefile.vc
index f6996d5216..b0a1f82d48 100644
--- a/utils/hhp2cached/makefile.vc
+++ b/utils/hhp2cached/makefile.vc
@@ -22,9 +22,10 @@ HHP2CACHED_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\hhp2cached.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\samples /DNOPCH $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) \
+	$(CXXFLAGS)
 HHP2CACHED_OBJECTS =  \
 	$(OBJS)\hhp2cached_hhp2cached.obj \
 	$(OBJS)\hhp2cached_hhp2cached.res
@@ -208,6 +209,12 @@ __UNICODE_DEFINE_p = /D_UNICODE
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_1 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_1 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -269,5 +276,5 @@ $(OBJS)\hhp2cached_hhp2cached.obj: .\hhp2cached.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(HHP2CACHED_CXXFLAGS) $**
 
 $(OBJS)\hhp2cached_hhp2cached.res: .\hhp2cached.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_2_p_1) $(__NO_VC_CRTDBG_p_1)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_1) $(__DEBUG_DEFINE_p_1) $(__EXCEPTIONS_DEFINE_p_1) $(__RTTI_DEFINE_p_1) $(__THREAD_DEFINE_p_1) $(__UNICODE_DEFINE_p_1) $(__MSLU_DEFINE_p_1) /i .\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_1) /d _WINDOWS /i .\..\..\samples /d NOPCH $**
 
diff --git a/utils/hhp2cached/makefile.wat b/utils/hhp2cached/makefile.wat
index 918272b136..34a5f2f506 100644
--- a/utils/hhp2cached/makefile.wat
+++ b/utils/hhp2cached/makefile.wat
@@ -253,5 +253,5 @@ $(OBJS)\hhp2cached_hhp2cached.obj :  .AUTODEPEND .\hhp2cached.cpp
 	$(CXX) -zq -fo=$^@ $(HHP2CACHED_CXXFLAGS) $<
 
 $(OBJS)\hhp2cached_hhp2cached.res :  .AUTODEPEND .\hhp2cached.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\samples -dNOPCH $<
 
diff --git a/utils/tex2rtf/src/Makefile.in b/utils/tex2rtf/src/Makefile.in
index 54edea4ae9..0b5bb10ed3 100644
--- a/utils/tex2rtf/src/Makefile.in
+++ b/utils/tex2rtf/src/Makefile.in
@@ -214,7 +214,7 @@ tex2rtf_table.o: $(srcdir)/table.cpp
 	$(CXXC) -c -o $@ $(TEX2RTF_CXXFLAGS) $(srcdir)/table.cpp
 
 tex2rtf_gui_sample_rc.o: $(srcdir)/../../../samples/sample.rc
-	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_5)  $(__EXCEPTIONS_DEFINE_p_5) $(__RTTI_DEFINE_p_5) $(__THREAD_DEFINE_p_5)  --include-dir $(srcdir) $(__DLLFLAG_p_5) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
+	$(RESCOMP) -i$< -o$@   --define __WX$(TOOLKIT)__ $(__WXUNIV_DEFINE_p_5)  $(__EXCEPTIONS_DEFINE_p_5) $(__RTTI_DEFINE_p_5) $(__THREAD_DEFINE_p_5)   --include-dir $(srcdir) $(__DLLFLAG_p_5) --include-dir $(srcdir)/../../../samples --include-dir $(top_srcdir)/include
 
 tex2rtf_gui_tex2rtf.o: $(srcdir)/tex2rtf.cpp
 	$(CXXC) -c -o $@ $(TEX2RTF_GUI_CXXFLAGS) $(srcdir)/tex2rtf.cpp
diff --git a/utils/tex2rtf/src/makefile.bcc b/utils/tex2rtf/src/makefile.bcc
index fceff32671..49d054f40e 100644
--- a/utils/tex2rtf/src/makefile.bcc
+++ b/utils/tex2rtf/src/makefile.bcc
@@ -30,9 +30,9 @@ SETUPHDIR = \
 TEX2RTF_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_0) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 -DNO_GUI $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 -DNO_GUI \
+	$(CPPFLAGS) $(CXXFLAGS)
 TEX2RTF_OBJECTS =  \
 	$(OBJS)\tex2rtf_tex2rtf.obj \
 	$(OBJS)\tex2rtf_tex2any.obj \
@@ -45,9 +45,9 @@ TEX2RTF_OBJECTS =  \
 TEX2RTF_GUI_CXXFLAGS = $(__RUNTIME_LIBS) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG) $(__THREADSFLAG_0) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -I.\..\..\..\samples \
+	-DNOPCH $(CPPFLAGS) $(CXXFLAGS)
 TEX2RTF_GUI_OBJECTS =  \
 	$(OBJS)\tex2rtf_gui_tex2rtf.obj \
 	$(OBJS)\tex2rtf_gui_tex2any.obj \
@@ -117,6 +117,9 @@ __THREAD_DEFINE_p_3 = -dwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_3 = -d_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_3 = -dwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p_3 = -dWXUSINGDLL
 !endif
@@ -179,6 +182,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
@@ -278,7 +284,7 @@ $(OBJS)\tex2rtf_table.obj: .\table.cpp
 	$(CXX) -q -c -P -o$@ $(TEX2RTF_CXXFLAGS) $**
 
 $(OBJS)\tex2rtf_gui_sample.res: .\..\..\..\samples\sample.rc
-	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_3) $(__DEBUG_DEFINE_p_3) $(__EXCEPTIONS_DEFINE_p_3) $(__RTTI_DEFINE_p_3) $(__THREAD_DEFINE_p_3) $(__UNICODE_DEFINE_p_3) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_3) -i.\..\..\..\samples $**
+	brcc32 -32 -r -fo$@ -i$(BCCDIR)\include   -d__WXMSW__ $(__WXUNIV_DEFINE_p_3) $(__DEBUG_DEFINE_p_3) $(__EXCEPTIONS_DEFINE_p_3) $(__RTTI_DEFINE_p_3) $(__THREAD_DEFINE_p_3) $(__UNICODE_DEFINE_p_3) $(__MSLU_DEFINE_p_3) -i.\..\..\..\include -i$(SETUPHDIR) -i. $(__DLLFLAG_p_3) -i.\..\..\..\samples $**
 
 $(OBJS)\tex2rtf_gui_tex2rtf.obj: .\tex2rtf.cpp
 	$(CXX) -q -c -P -o$@ $(TEX2RTF_GUI_CXXFLAGS) $**
diff --git a/utils/tex2rtf/src/makefile.gcc b/utils/tex2rtf/src/makefile.gcc
index 9e61f1d18f..22fb8e9724 100644
--- a/utils/tex2rtf/src/makefile.gcc
+++ b/utils/tex2rtf/src/makefile.gcc
@@ -22,9 +22,10 @@ SETUPHDIR = \
 TEX2RTF_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 -DNO_GUI $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	-DNO_GUI $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
+	$(CPPFLAGS) $(CXXFLAGS)
 TEX2RTF_OBJECTS =  \
 	$(OBJS)\tex2rtf_tex2rtf.o \
 	$(OBJS)\tex2rtf_tex2any.o \
@@ -37,10 +38,10 @@ TEX2RTF_OBJECTS =  \
 TEX2RTF_GUI_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
 	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\..\include \
-	-I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\..\include -I$(SETUPHDIR) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TEX2RTF_GUI_OBJECTS =  \
 	$(OBJS)\tex2rtf_gui_sample_rc.o \
 	$(OBJS)\tex2rtf_gui_tex2rtf.o \
@@ -118,6 +119,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p_3 = --define _UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p_3 = --define wxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p_3 = --define WXUSINGDLL
 endif
@@ -170,6 +174,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
@@ -264,7 +271,7 @@ $(OBJS)\tex2rtf_table.o: ./table.cpp
 	$(CXX) -c -o $@ $(TEX2RTF_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\tex2rtf_gui_sample_rc.o: ./../../../samples/sample.rc
-	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_3) $(__DEBUG_DEFINE_p_3) $(__EXCEPTIONS_DEFINE_p_3) $(__RTTI_DEFINE_p_3) $(__THREAD_DEFINE_p_3) $(__UNICODE_DEFINE_p_3) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_3) --include-dir ./../../../samples
+	windres --use-temp-file -i$< -o$@   --define __WXMSW__ $(__WXUNIV_DEFINE_p_3) $(__DEBUG_DEFINE_p_3) $(__EXCEPTIONS_DEFINE_p_3) $(__RTTI_DEFINE_p_3) $(__THREAD_DEFINE_p_3) $(__UNICODE_DEFINE_p_3) $(__MSLU_DEFINE_p_3) --include-dir ./../../../include --include-dir $(SETUPHDIR) --include-dir . $(__DLLFLAG_p_3) --include-dir ./../../../samples
 
 $(OBJS)\tex2rtf_gui_tex2rtf.o: ./tex2rtf.cpp
 	$(CXX) -c -o $@ $(TEX2RTF_GUI_CXXFLAGS) $(CPPDEPS) $<
diff --git a/utils/tex2rtf/src/makefile.vc b/utils/tex2rtf/src/makefile.vc
index d70b51e937..236550f836 100644
--- a/utils/tex2rtf/src/makefile.vc
+++ b/utils/tex2rtf/src/makefile.vc
@@ -22,9 +22,9 @@ TEX2RTF_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) /Fd$(OBJS)\tex2rtf.pdb $(____DEBUGRUNTIME) $(__OPTIMIZEFLAG) \
 	$(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) /I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. \
-	$(__DLLFLAG_p) /D_CONSOLE /DwxUSE_GUI=0 /DNO_GUI $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) /I.\..\..\..\include \
+	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_CONSOLE /DwxUSE_GUI=0 /DNO_GUI \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
 TEX2RTF_OBJECTS =  \
 	$(OBJS)\tex2rtf_tex2rtf.obj \
 	$(OBJS)\tex2rtf_tex2any.obj \
@@ -38,9 +38,10 @@ TEX2RTF_GUI_CXXFLAGS = /M$(__RUNTIME_LIBS_22)$(__DEBUGRUNTIME) /DWIN32 \
 	$(__DEBUGINFO) /Fd$(OBJS)\tex2rtf_gui.pdb $(____DEBUGRUNTIME) \
 	$(__OPTIMIZEFLAG) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\..\include \
-	/I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS /I.\..\..\..\samples /DNOPCH \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_WINDOWS \
+	/I.\..\..\..\samples /DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) $(CPPFLAGS) \
+	$(CXXFLAGS)
 TEX2RTF_GUI_OBJECTS =  \
 	$(OBJS)\tex2rtf_gui_sample.res \
 	$(OBJS)\tex2rtf_gui_tex2rtf.obj \
@@ -141,6 +142,9 @@ __THREAD_DEFINE_p_3 = /d wxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p_3 = /d _UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p_3 = /d wxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p_3 = /d WXUSINGDLL
 !endif
@@ -251,6 +255,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
@@ -332,7 +339,7 @@ $(OBJS)\tex2rtf_table.obj: .\table.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(TEX2RTF_CXXFLAGS) $**
 
 $(OBJS)\tex2rtf_gui_sample.res: .\..\..\..\samples\sample.rc
-	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_16_p_1) $(__NO_VC_CRTDBG_p_3)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_3) $(__DEBUG_DEFINE_p_3) $(__EXCEPTIONS_DEFINE_p_3) $(__RTTI_DEFINE_p_3) $(__THREAD_DEFINE_p_3) $(__UNICODE_DEFINE_p_3) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_3) /d _WINDOWS /i .\..\..\..\samples $**
+	rc /fo$@  /d WIN32 $(____DEBUGRUNTIME_16_p_1) $(__NO_VC_CRTDBG_p_3)  /d __WXMSW__ $(__WXUNIV_DEFINE_p_3) $(__DEBUG_DEFINE_p_3) $(__EXCEPTIONS_DEFINE_p_3) $(__RTTI_DEFINE_p_3) $(__THREAD_DEFINE_p_3) $(__UNICODE_DEFINE_p_3) $(__MSLU_DEFINE_p_3) /i .\..\..\..\include /i $(SETUPHDIR) /i . $(__DLLFLAG_p_3) /d _WINDOWS /i .\..\..\..\samples $**
 
 $(OBJS)\tex2rtf_gui_tex2rtf.obj: .\tex2rtf.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(TEX2RTF_GUI_CXXFLAGS) $**
diff --git a/utils/tex2rtf/src/makefile.wat b/utils/tex2rtf/src/makefile.wat
index af50a65612..15fba59895 100644
--- a/utils/tex2rtf/src/makefile.wat
+++ b/utils/tex2rtf/src/makefile.wat
@@ -314,7 +314,7 @@ $(OBJS)\tex2rtf_table.obj :  .AUTODEPEND .\table.cpp
 	$(CXX) -zq -fo=$^@ $(TEX2RTF_CXXFLAGS) $<
 
 $(OBJS)\tex2rtf_gui_sample.res :  .AUTODEPEND .\..\..\..\samples\sample.rc
-	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
+	wrc -q -ad -bt=nt -r -fo=$^@   -d__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p)  -i=.\..\..\..\include -i=$(SETUPHDIR) -i=. $(__DLLFLAG_p) -i=.\..\..\..\samples $<
 
 $(OBJS)\tex2rtf_gui_tex2rtf.obj :  .AUTODEPEND .\tex2rtf.cpp
 	$(CXX) -zq -fo=$^@ $(TEX2RTF_GUI_CXXFLAGS) $<
diff --git a/utils/wxrc/makefile.bcc b/utils/wxrc/makefile.bcc
index e46d8973b2..c26c6c426f 100644
--- a/utils/wxrc/makefile.bcc
+++ b/utils/wxrc/makefile.bcc
@@ -30,8 +30,9 @@ SETUPHDIR = \
 WXRC_CXXFLAGS = $(__RUNTIME_LIBS_7) -I$(BCCDIR)\include $(__DEBUGINFO) \
 	$(__OPTIMIZEFLAG_2) $(__THREADSFLAG_6) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) \
-	-I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	-I.\..\..\include -I$(SETUPHDIR) -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(CPPFLAGS) \
+	$(CXXFLAGS)
 WXRC_OBJECTS =  \
 	$(OBJS)\wxrc_wxrc.obj
 
@@ -124,6 +125,9 @@ __THREAD_DEFINE_p = -DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = -D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = -DWXUSINGDLL
 !endif
diff --git a/utils/wxrc/makefile.gcc b/utils/wxrc/makefile.gcc
index fde54ce37e..ea610012ca 100644
--- a/utils/wxrc/makefile.gcc
+++ b/utils/wxrc/makefile.gcc
@@ -22,8 +22,8 @@ SETUPHDIR = \
 WXRC_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
 	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
 	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W -Wall -I. \
-	$(__DLLFLAG_p) -DwxUSE_GUI=0 $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	$(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) -I.\..\..\include -I$(SETUPHDIR) -W \
+	-Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 WXRC_OBJECTS =  \
 	$(OBJS)\wxrc_wxrc.o
@@ -112,6 +112,9 @@ endif
 ifeq ($(UNICODE),1)
 __UNICODE_DEFINE_p = -D_UNICODE
 endif
+ifeq ($(MSLU),1)
+__MSLU_DEFINE_p = -DwxUSE_UNICODE_MSLU=1
+endif
 ifeq ($(SHARED),1)
 __DLLFLAG_p = -DWXUSINGDLL
 endif
diff --git a/utils/wxrc/makefile.vc b/utils/wxrc/makefile.vc
index baf9ec3930..6f8da8924e 100644
--- a/utils/wxrc/makefile.vc
+++ b/utils/wxrc/makefile.vc
@@ -22,9 +22,9 @@ WXRC_CXXFLAGS = /M$(__RUNTIME_LIBS_8)$(__DEBUGRUNTIME_3) /DWIN32 \
 	$(__DEBUGINFO_0) /Fd$(OBJS)\wxrc.pdb $(____DEBUGRUNTIME_2_p) \
 	$(__OPTIMIZEFLAG_4) $(__NO_VC_CRTDBG_p) /D__WXMSW__ $(__WXUNIV_DEFINE_p) \
 	$(__DEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) /I.\..\..\include /I$(SETUPHDIR) \
-	/W4 /I. $(__DLLFLAG_p) /D_CONSOLE /DwxUSE_GUI=0 $(__RTTIFLAG_9) \
-	$(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) $(__MSLU_DEFINE_p) \
+	/I.\..\..\include /I$(SETUPHDIR) /W4 /I. $(__DLLFLAG_p) /D_CONSOLE \
+	/DwxUSE_GUI=0 $(__RTTIFLAG_9) $(__EXCEPTIONSFLAG_10) $(CPPFLAGS) $(CXXFLAGS)
 WXRC_OBJECTS =  \
 	$(OBJS)\wxrc_wxrc.obj
 
@@ -171,6 +171,9 @@ __THREAD_DEFINE_p = /DwxNO_THREADS
 !if "$(UNICODE)" == "1"
 __UNICODE_DEFINE_p = /D_UNICODE
 !endif
+!if "$(MSLU)" == "1"
+__MSLU_DEFINE_p = /DwxUSE_UNICODE_MSLU=1
+!endif
 !if "$(SHARED)" == "1"
 __DLLFLAG_p = /DWXUSINGDLL
 !endif
-- 
2.47.2