docs/changes.txt

   1 wxWindows 2.0 Change Log
   2 ------------------------
   3
   4 Beta 2, ??? 1998
   5 --------------------------
   6
   7 wxGTK:
   8
   9 wxMSW:
  10
  11 - 16-bit BC++ compilation/linking works albeit without the resource system.
  12
  13 wxMotif:
  14
  15 - Cured wxScreenDC origin problem so e.g. sash window sash is drawn at
  16   the right place.
  17 - Cured some widget table clashes.
  18 - Added thread support (Robert).
  19 - wxPoem sample now works.
  20
  21 General:
  22
  23 - Rearranged documentation a bit.
  24 - Sash window uses area of first frame/dialog to paint over when drawing
  25   the dragged sash, not just the sash window itself (it clipped to the right
  26   or below).
  27 - Made resource sample use the correct Cancel button id.
  28 - Moved wxProp to main library (generic directory), created proplist
  29   sample.
  30 - Added bombs and fractal samples.
  31
  32 Beta 1, December 24th 1998
  33 --------------------------
  34
  35 wxGTK:
  36
  37 - Various
  38
  39 wxMSW, wxMotif: not in sync with this release.
  40
  41
  42 Alpha 18, December 29th 1998
  43 ----------------------------
  44
  45 wxMSW:
  46
  47 - Win16 support working again (VC++ 1.5)
  48 - Win16 now uses generic wxNotebook, wxListCtrl,
  49   wxTreeCtrl -- more or less working now, although
  50   a little work on wxNotebook is still needed.
  51   Under 16-bit Windows, get assertion when you click
  52   on a tab.
  53 - Wrote 16-bit BC++ makefiles: samples don't yet link.
  54 - Added CodeWarrior support to distribution courtesy
  55   of Stefan Csomor.
  56
  57 wxMotif:
  58
  59 - Cured scrolling problem: scrollbars now show/hide themselves
  60   without (permanently) resizing the window.
  61 - Removed some commented-out lines in wxScrolledWindow::AdjustScrollbars
  62   that disabled scrollbar paging.
  63 - Set background colour of drawing area in wxWindow, so e.g. wxListCtrl
  64   colours correctly.
  65 - Removed major bug whereby dialogs were unmanaged automatically
  66   when any button was pressed.
  67 - Fixed colours of wxWindow scrollbars, made list and text controls
  68   have a white background.
  69 - Fixed dialog colour setting.
  70 - Added settable fonts and colours for wxMenu/wxMenuBar. Now
  71   they have sensible colours by default.
  72 - Fixed a bug in wxStaticBox.
  73 - Cured wxTreeCtrl bug: now works pretty well!
  74 - Debugged DrawEllipticArc (a ! in the wrong place).
  75 - Added SetClippingRegion( const wxRegion& region ).
  76 - Added wxPoint, wxSize, wxRect versions of SetSize etc.
  77
  78 Alpha 17, November 22nd 1998
  79 ----------------------------
  80
  81 wxMSW:
  82
  83 - More documentation updates, especially for
  84   wxLayoutWindow classes and debugging facilities.
  85 - Changed wxDebugContext to use wxDebugLog instead
  86   of wxTrace.
  87 - Now supports VC++ 6.0, and hopefully BC++ 5.0.
  88   However, DLL support may be broken for BC++ since
  89   VC++ 6 required changing of WXDLLEXPORT keyword
  90   position.
  91 - Numerous miscellaneous changes.
  92
  93 wxMotif:
  94
  95 - Reimplemented MDI using wxNotebook instead of the MDI widgets, which
  96   were too buggy (probably not design for dynamic addition/removal of
  97   child frames).
  98 - Some improvements to the wxNotebook implementation.
  99 - wxToolBar now uses a bulletin board instead of a form, in an attempt
 100   to make it possible to add ordinary wxControls to a toolbar.
 101 - Cured problem with not being able to use global memory operators,
 102   by defining two more global operators, so that the delete will match
 103   the debugging implementation.
 104 - Added wxUSE_DEBUG_NEW_ALWAYS so we can distinguish between using
 105   global memory operators (usually OK) and #defining new to be
 106   WXDEBUG_NEW (sometimes it might not be OK).
 107 - Added time.cpp to makefile; set wxUSE_DATETIME to 1.
 108 - Added a parent-existance check to popup menu code to make it not crash.
 109 - Added some optimization in wxWindow::SetSize to produce less flicker.
 110   It remains to be seen whether this produces any resize bugs.
 111
 112 It's a long time since I updated this file. Previously done:
 113
 114 - wxFrame, wxDialog done.
 115 - wxScrolledWindow done (but backing pixmap not used at present).
 116 - wxBitmap done though could be tidied it up at some point.
 117 - Most basic controls are there, if not rigorously tested.
 118 - Some MDI support (menus appear on child frames at present).
 119 - wxNotebook almost done.
 120 - wxToolBar done (horizontal only, which would be easy to extend
 121   to vertical toolbars).
 122
 123 More recently:
 124
 125 - Colour and font changing done (question mark over what happens
 126   to scrollbars).
 127 - Accelerators done (for menu items and buttons). Also event loop
 128   tidied up in wxApp so that events are filtered through ProcessXEvent.
 129 - wxWindow::GetUpdateRegion should now work.
 130
 131 Alpha 16, September 8th 1998
 132 ----------------------------
 133
 134 wxMSW:
 135
 136 - Added wxSashWindow, wxSashLayoutWindow classes, and sashtest
 137   sample.
 138 - Guilhem's socket classes added, plus wxsocket sample.
 139 - A few more makefiles added.
 140 - GnuWin32/BC++ compatibility mods.
 141 - Further doc updates.
 142 - wxProp updates for correct working with wxGTK.
 143
 144 wxMotif:
 145
 146 - First start at Motif port.
 147 - Made makefiles for wxMotif source directory and minimal sample.
 148 - First go at wxApp, wxWindow, wxDialog, wxPen, wxBrush, wxFont,
 149   wxColour, wxButton, wxCheckBox, wxTextCtrl, wxStaticText,
 150   wxMenu, wxMenuItem, wxMenuBar
 151
 152 Alpha 15, August 31st 1998
 153 --------------------------
 154
 155 wxMSW:
 156
 157 - wxBitmap debugged.
 158 - wxDC::GetDepth added.
 159 - Contribution added whereby wxBitmap will be
 160   converted to DC depth if they don't match.
 161 - wxConfig API improved, documentation updated.
 162 - Printing classes name conventions cleaned up.
 163 - wxUpdateUIEvent now derives from wxCommandEvent
 164   so event can travel up the window hierachy.
 165
 166 Alpha 14, July 31st 1998
 167 ------------------------
 168
 169 wxMSW:
 170
 171 - Toolbar API has been simplified, and now
 172   wxFrame::GetClientArea returns the available client
 173   area when toolbar, status bar etc. have been accounted for.
 174   wxFrame::CreateToolBar added in line with CreateStatusBar.
 175 - Documentation updates, incl. for wxToolBar.
 176 - New wxAcceleratorTable class plus wxFrame::SetAcceleratorTable.
 177 - Various additions from other folk, e.g. streams, wxConfig
 178   changes, wxNotebook.
 179 - Added wxDocMDIParentFrame, wxDocMDIChildFrame for doc/view.
 180
 181 Alpha 13, July 8th 1998
 182 -----------------------
 183
 184 wxMSW:
 185
 186 - Implemented wxPoint as identical to POINT on Windows, and
 187   altered wxDC wxPoint functions to use wxPoint directly in
 188   Windows functions, for efficiency.
 189 - Cured wxASSERT bug in wxStatusBar95.
 190 - #ifdefed out some bits in oleutils.cpp for compilers that
 191   don't support it.
 192 - Added some operators to wxPoint, wxSize.
 193 - Added inline wxDC functions using wxPoint, wxSize, wxRect.
 194
 195 Alpha 12, July 7th 1998
 196 -----------------------
 197
 198 wxMSW:
 199
 200 - Added wxApp::GetComCtl32Version, and wxTB_FLAT style, so can
 201   have flat toolbars on Win98 or Win95 with IE >= 3 installed.
 202
 203 Alpha 11, July 3rd 1998
 204 -----------------------
 205
 206 wxMSW:
 207
 208 - Added thread.h, thread.cpp.
 209 - Changed Enabled, Checked to IsEnabled, IsChecked in wxMenu,
 210   wxMenuBar.
 211 - Changed wxMenuItem::SetBackColor to SetBackgroundColour,
 212   SetTextColor to SetTextColour, and added or made public several
 213   wxMenuItem accessors.
 214 - Added two overloads to wxRegion::Contains. Added
 215   wxRegion::IsEmpty for a more consistent naming convention.
 216 - Added Vadim's wxDataObject and wxDropSource.
 217 - ENTER/LEAVE events now work.
 218 - Cured wxMemoryDC bug where the DC wasn't being deleted.
 219 - Cured wxGauge SetSize major bugginess.
 220 - Cured problem where if a GDI object was created on the stack,
 221   then went out of scope, then another object was selected into
 222   the DC, GDI objects would leak. This is because the assignment
 223   to e.g. wxDC::m_pen would delete the GDI object without it first
 224   being selected out of the DC. Cured by selecting the old DC object
 225   first, then doing the assignment.
 226 - Split up wxGaugeMSW, wxGauge95, wxSliderMSW, wxSlider95
 227 - Various other bug fixes and additions.
 228
 229 Generic:
 230
 231 - Major work on Dialog Editor (still plenty to go).
 232 - Expanded documentation a bit more.
 233
 234 Alpha 10, May 7th 1998
 235 ----------------------
 236
 237 wxMSW:
 238
 239 - Added desiredWidth, desiredHeight parameters to wxBitmapHandler
 240   and wxIcon functions so that you can specify what size of
 241   icon should be loaded. Probably will remain a Windows-specific thing.
 242 - wxStatusBar95 now works for MDI frames.
 243 - Toolbars in MDI frames now behave normally. They still
 244   require application-supplied positioning code though.
 245 - Changed installation instructions, makefiles and batch files
 246   for compiling with Gnu-Win32/Mingw32/EGCS. Also timercmn.cpp
 247   change to support Mingw32/EGCS. Bison now used by default.
 248
 249 Alpha 9, April 27th 1998
 250 ------------------------
 251
 252 wxMSW:
 253
 254 - Cured bug in wxStatusBar95 that caused a crash if multiple
 255   fields were used.
 256 - Added Gnu-Win32 b19/Mingw32 support by changing resource
 257   compilation and pragmas.
 258 - Cured wxMenu bug introduced in alpha 8 - didn't respond to
 259   commands because VZ changed the id setting in wxMenu::MSWCommand.
 260
 261 Generic:
 262
 263 - Corrected some bugs, such as the wxModule compilation problem.
 264 - Added Gnu-Win32 b19/Mingw32 support by changing resource
 265   compilation and pragmas.
 266 - Changed SIZEOF to WXSIZEOF.
 267
 268 Alpha 8, April 17th 1998
 269 ------------------------
 270
 271 wxMSW:
 272
 273 - Added IsNull to wxGDIObject to check if the ref data is present or not.
 274 - Added PNG handler and sample - doesn't work for 16-bit PNGs for
 275   some reason :-(
 276 - Added wxJoystick class and event handling, and simple demo.
 277 - Added simple wxWave class. Needs Stop() function.
 278 - Added wxModule (module.h/module.cpp) to allow definition
 279   of modules to be initialized and cleaned up on wxWindows
 280   startup/exit.
 281 - Start of Mingw32 compatibility (see minimal and dialogs samples
 282   makefile.m95 files, and install.txt).
 283 - Note: Windows printing has stopped working... will investigate.
 284 VADIM'S CHANGES:
 285 - Updated wxString: bug fixes, added wxArrayString, some
 286   compatibility functions.
 287 - Updated log.h/cpp, added wxApp::CreateLogTarget.
 288 - file.h: new wxTempFile class.
 289 - defs.h: added wxSB_SIZE_GRIP for wxStatusBar95
 290 - statbr95: wxStatusBar95 control.
 291 - registry.h/cpp: wxRegKey class for Win95 registry.
 292 - listbox.cpp: corrected some bugs with owner-drawn listboxes.
 293 - wxConfig and wxFileConfig classes.
 294
 295 Generic:
 296
 297 - Added src/other/png, src/other/zlib directories.
 298 - Added samples/png.
 299 - IMPORTANT: Changed 'no id' number from 0 to -1, in wxEVT_ macros.
 300   Porters, please check particularly your wxTreeCtrl and wxListCtrl
 301   header files.
 302 - Added modules.h/cpp, config.cpp, fileconf.cpp, textfile.cpp/h.
 303
 304 Alpha 7, March 30th 1998
 305 ------------------------
 306
 307 wxMSW:
 308
 309 - Added tab classes, tab sample.
 310 - Now can return FALSE from OnInit and windows will be
 311   cleaned up properly before exit.
 312 - Improved border handling so panels don't get borders
 313   automatically.
 314 - Debugged MDI activation from Window menu.
 315 - Changes to memory debug handling, including checking for
 316   memory leaks on application exit - but see issues.txt for
 317   unresolved issues.
 318 - Added wxTaskBarIcon (taskbar.cpp/h, plus samples/taskbar)
 319   to allow maintenance of an icon in the Windows 95 taskbar
 320   tray area.
 321 - Got MFC sample working (MFC and wxWindows in the same
 322   application), partly by tweaking ntwxwin.mak settings.
 323 - Got DLL compilation working again (VC++).
 324 - Changed wxProp/Dialog Editor filenames.
 325
 326 Generic:
 327
 328 - Added tab classes, tab sample.
 329 - Revised memory.cpp, memory.h slightly; memory.h now #defines
 330   new to WXDEBUG_NEW in DEBUG mode. Windows implementation app.cpp
 331   now checks for leaks on exit. Added memcheck sample.
 332   See src/msw/issues.txt for more details.
 333 - resource.h, resource.cpp changed to make wxDefaultResourceTable
 334   a pointer. Now initialize resource system with
 335   wxInitializeResourceSystem and wxCleanUpResourceSystem, to
 336   allow better control of memory.
 337 - wxString now derives from wxObject, to enable memory leak
 338   checking.
 339 - Added some #include fixes in various files, plus changed
 340   float to long in wxToolBar files.
 341
 342 Alpha 6, March 10th 1998
 343 ------------------------
 344
 345 wxMSW:
 346
 347 - Found stack error bug - stopped unwanted OnIdle recursion.
 348 - Removed bug in wxTreeCtrl::InsertItem I added in alpha 5.
 349 - Changed exit behaviour in wxApp/wxFrame/wxDialog. Now will
 350   check if the number of top-level windows is zero before
 351   exiting. Also, wxApp::GetTopWindow will return either
 352   m_topWindow or the first member of wxTopLevelWindows, so you
 353   don't have to call wxApp::SetTopWindow.
 354 - Added dynarray.h/dynarray.cpp (from Vadim).
 355 - Added first cut at OLE drag and drop (from Vadim). dnd sample
 356   added. Drop target only at this stage. See src/msw/ole/*.cpp,
 357   wx/include/msw/ole/*.h. WIN32 only because of UUID usage.
 358   Doesn't work with GnuWin32 - no appropriate headers e.g. for
 359   IUnknown.
 360   Doesn't work with BC++ either - crashes on program startup.
 361 - Added Vadim's owner-draw modifications - will probably remain
 362   Windows-only. This enhances wxMenu, wxListBox. See ownerdrw sample.
 363 - Added wxLB_OWNERDRAW for owner-draw listboxes.
 364 - Vadim's wxCheckListBox derives from wxListBox. See checklst sample.
 365   Doesn't entirely work for WIN16.
 366 - Vadim has added wxMenuItem as a separate file menuitem.cpp. It
 367   can also be used as an argument to wxMenu::Append, not just for
 368   internal implementation.
 369 - Some #ifdefs done for MINGW32 compilation (just alter OPTIONS
 370   in makeg95.env, together with mingw32.bat). However, resource
 371   binding is not working yet so most apps with dialogs crash.
 372
 373 Generic:
 374
 375 - Added Vadim's dynarray.h, dynarray.cpp.
 376 - Added Vadim's menuitem.cpp.
 377 - Added Windows-specific wxCheckListBox,
 378   owner-draw wxListBox, and drag-and-drop
 379   (see docs/msw/changes.txt).
 380
 381 Alpha 5, 14th February 1998
 382 --------------------------
 383
 384 wxMSW:
 385
 386 - GENERIC AND MSW-SPECIFIC CODE NOW TREATED AS TWO SEPARATE
 387   DISTRIBUTIONS. This change log will therefore now refer to
 388   the Windows-specific code only. See docs/changes.txt for generic
 389   changes.
 390 - Removed Windows-specific reference counting system (GDI
 391   resources were cleaned up in idle time) - minimal
 392   advantages now we have a wxWin reference counting system.
 393 - Added missing WXDLLEXPORT keywords so DLL compilation works
 394   again.
 395 - Removed most warnings for GnuWin32 compilation.
 396 - Added wxRegion/wxRegionIterator, but haven't yet used it in
 397   e.g. wxDC.
 398
 399 Generic:
 400
 401 - GENERIC AND MSW-SPECIFIC CODE NOW TREATED AS TWO SEPARATE
 402   DISTRIBUTIONS. This change log will therefore now refer to
 403   the generic code only. See docs/msw/changes.txt for Windows-specific
 404   changes.
 405 - Readmes, change logs and installation files now go in
 406   platform-specific directories under docs, e.g. docs/msw,
 407   docs/gtk.
 408 - Added DECLARE_APP and IMPLEMENT_APP macros so wxApp object gets
 409   created dynamically, not as a global object.
 410 - Put wxColour into wx/msw/colour.h, src/msw/colour.cpp.
 411 - Changed names of some include/wx/generic headers to be
 412   consistent and to conform to gcc pragma conventions. Also
 413   changed choicesg.cpp to choicdgg.cpp.
 414 - Added gcc pragmas.
 415 - Added gtk inclusion in include/wx headers.
 416 - Added consistent file headings to source and headers.
 417 - Removed lang.cpp, lang.h and references to wxSTR_... variables;
 418   added a few references to wxTransString.
 419 - Added operator to wxTransString that converts automatically
 420   to wxString, so we can say e.g. wxMessageBox(wxTransString("Hello"), ...).
 421 - samples/internat now works (minimally).
 422 - Added wxMouseEvent::GetPosition and
 423   wxMouseEvent::GetLogicalPosition, both returning wxPoints.
 424 - Made wxSize and wxRect contain longs not ints.
 425 - Cured some lemory leaks (thanks Vadim).
 426 - Tidied up OnIdle and introduced RequestMore/MoreRequested so
 427   will only keep processing OnIdle if it returns TRUE from
 428   MoreRequested.
 429
 430 Alpha 4, 31st January 1998
 431 --------------------------
 432
 433 All:
 434
 435 - Changed wxDC functions to take longs instead of floats. GetSize now takes
 436   integer pointers, plus a version that returns a wxSize.
 437 - const keyword added to various wxDC functions.
 438 - Under Windows, wxDC no longer has any knowledge of whether
 439   an associated window is scrolled or not. Instead, the device
 440   origin is set by wxScrolledWindow in wxScrolledWindow::PrepareDC.
 441 - wxScrolledWindow applications can optionally override the virtual OnDraw
 442   function instead of using the OnPaint event handler. The wxDC passed to
 443   OnDraw will be translated by PrepareDC to reflect scrolling.
 444   When drawing outside of OnDraw, must call PrepareDC explicitly.
 445 - wxToolBarBase/wxToolBarSimple similarly changed to allow for
 446   scrolling toolbars.
 447 - Integrated wxPostScriptDC patches for 1.xx by Chris Breeze,
 448   to help printing with multiple pages.
 449 - IPC classes given base classes (wxConnectionBase etc.) which
 450   define the API used by different implementations. DDE
 451   implementation updated to use these base classes.
 452 - wxHelpInstance now separated into wxHelpControllerBase (base
 453   for all implementations), wxWinHelpController (uses standard
 454   WinHelp), wxXLPHelPController (talks to wxHelp by DDE or
 455   TCP/IP). There will be others eventually, such as
 456   wxHTMLHelpController for Microsoft (and Netscape?) HTML Help.
 457 - Added Vadim Zeitlin's wxString class plus
 458   internationalization code (gettext simulation, wxLocale, etc.).
 459   New files from Vadim:
 460   include\wx\string.h
 461   include\wx\debug.h
 462   include\wx\file.h
 463   include\wx\log.h
 464   include\wx\intl.h
 465   src\common\string.cpp
 466   src\common\log.cpp
 467   src\common\intl.cpp
 468   src\common\file.cpp
 469   No longer use GNU wxString files.
 470 - Split off file-related functions into include\wx\filefn.h and
 471   src\common\filefn.cpp.
 472 - Borland C++ support (WIN32) for main library and
 473   samples, using makefile.b32 files.
 474 - Preparation done for allowing BC++ to compile wxWin as a DLL,
 475   including changes to defs.h.
 476 - wxIntPoint removed, wxPoint is now int, and wxRealPoint
 477   introduced.
 478 - Added wxShowEvent (generated when window is being shown or
 479   hidden).
 480 - Got minimal, docview, mdi samples working for 16-bit VC++ and
 481   cured 16-bit problem with wxTextCtrl (removed global memory
 482   trick).
 483 - Updated GnuWin32 makefiles, checked minimal, mdi, docview samples.
 484
 485 Alpha 3, September 1997
 486 -----------------------
 487
 488 All:
 489
 490 - wxListCtrl, wxTreeCtrl, wxImageList classes done.
 491 - Instigated new file hierarchy, split files and classes up more logically.
 492 - PrologIO and some other utils now put into core library.
 493 - Revamped print/preview classes, added wxPageSetupDialog.
 494 - Started documentation.
 495
 496 Alpha 2, 30th April 1997
 497 ------------------------
 498
 499 All:
 500
 501 - EVT_... macros now have at least one argument, for conformance
 502   with MetroWerks compiler.
 503 - Added ids to .wxr file format.
 504 - Got Dialog Editor compiled and running again but need
 505   to extend functionality to be in line with new controls.
 506   Added dialoged\test app to allow dynamic loading of .wxr files
 507   for testing purposes.
 508 - Rewrote wxBitmap to allow installable file type
 509   handlers.
 510 - Rewrote wxBitmapButton, wxStaticBitmap to not use Fafa.
 511 - Wrote most of wxTreeCtrl and sample (need wxImageList to implement it
 512   fully).
 513 - Added back wxRadioBox.
 514 - Tidied up wx_main.cpp, wxApp class, putting PenWin code in
 515   a separate file.
 516
 517 Alpha 1, 5th April 1997
 518 -----------------------
 519
 520 Generic:
 521
 522 At this point, the following has been achieved:
 523
 524 - A lot, but not all, of the code has been revamped for better
 525   naming conventions, protection of data members, and use of
 526   wxString instead of char *.
 527 - Obsolete functionality deleted (e.g. default wxPanel layout,
 528   old system event system) and code size reduced.
 529 - Class hierarchy changed (see design doc) - base classes such
 530   as wxbWindow now removed.
 531 - No longer includes windows.h in wxWin headers, by using stand-in
 532   Windows types where needed e.g. WXHWND.
 533 - PrologIO revised.
 534 - wxScrolledWindow, wxStatusBar and new MDI classes added.
 535   MDI is now achived using separate classes, not window styles.
 536 - wxSystemSettings added, and made use of to reflect standard
 537   Windows settings.
 538 - SetButtonFont/SetLabelFont replaced by SetFont; font and colour
 539   settings mucho rationalised.
 540 - All windows are now subclassed with the same window proc to make
 541   event handling far more consistent. Old internal wxWnd and derived
 542   classes removed.
 543 - API for controls revised, in particular addition of
 544   wxValidator parameters and removal of labels for some controls.
 545 - 1 validator written: see examples/validate.
 546 - Event table system introduced (see most samples and
 547   wx_event.cpp/ProcessEvent, wx_event.h). wxEvtHandler
 548   made more flexible, with Push/PopEventHandler allowing a chain
 549   of event handlers.
 550 - wxRadioBox removed - will be added back soon.
 551 - Toolbar class hierarchy revised:
 552   wxToolBarBase
 553   wxToolBarSimple (= old wxToolBar)
 554   wxToolBar95 (= old wxButtonBar under Win95
 555   wxToolBarMSW (= old wxButtonBar under WIN16/WIN32)
 556 - Constraint system debugged somewhat (sizers now work properly).
 557 - wxFileDialog, wxDirDialog added; other common dialogs now
 558   have class equivalents. Generic colour and font dialogs
 559   rewritten to not need obsolete panel layout.
 560 - .wxr resource system partially reinstated, though needs
 561   an integer ID for controls. Hopefully the resource system
 562   will be replaced by something better and more efficient
 563   in the future.
 564 - Device contexts no longer stored with window and accessed
 565   with GetDC - use wxClientDC, wxPaintDC, wxWindowDC stack
 566   variables instead.
 567 - wxSlider uses trackbar class under Win95, and wxSL_LABELS flag
 568   determines whether labels are shown. Other Win95-specific flags
 569   introduced, e.g. for showing ticks.
 570 - Styles introduced for dealing with 3D effects per window, for
 571   any window: all Win95 3D effects supported, plus transparent windows.
 572 - Major change to allow 3D effect support without CTL3D, under
 573   Win95.
 574 - Bitmap versions of button and checkbox separated out into new
 575   classes, but unimplemented as yet because I intend to remove
 576   the need for Fafa - it apparently causes GPFs in Win95 OSR 2.
 577 - utils/wxprop classes working (except maybe wxPropertyFormView)
 578   in preparation for use in Dialog Editor.
 579 - GNU-WIN32 compilation verified (a month or so ago).
 580
 581