src/palmos/mslu.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/mslu.cpp
   3 // Purpose:     Fixes for bugs in MSLU
   4 // Author:      Vaclav Slavik
   5 // Modified by:
   6 // Created:     2002/02/17
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2002 Vaclav Slavik
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 // This may or may not apply to Palm OS in the future, but for right now Unicode
  20 // is not supported.
  21 #ifndef __WXPALMOS__
  22
  23 #ifdef __BORLANDC__
  24 #pragma hdrstop
  25 #include <dir.h>
  26 #endif
  27
  28 #ifndef WX_PRECOMP
  29     #include "wx/defs.h"
  30 #endif
  31
  32 #if wxUSE_UNICODE_MSLU
  33
  34 //------------------------------------------------------------------------
  35 //
  36 // NB: MSLU only covers Win32 API, it doesn't provide Unicode implementation of
  37 //     libc functions. Unfortunately, some of MSVCRT wchar_t functions
  38 //     (e.g. _wopen) don't work on Windows 9x, so we have to workaround it
  39 //     by calling the char version. We still want to use wchar_t version on
  40 //     NT/2000/XP, though, because they allow for Unicode file names.
  41 //
  42 //     Moreover, there are bugs in unicows.dll, of course. We have to
  43 //     workaround them, too.
  44 //
  45 //------------------------------------------------------------------------
  46
  47 #include "wx/msw/private.h"
  48 #include "wx/msw/mslu.h"
  49
  50 #include <stdio.h>
  51 #include <io.h>
  52 #include <sys/stat.h>
  53
  54 #ifdef __VISUALC__
  55     #include <direct.h>
  56 #endif
  57
  58 // Undef redirection macros defined in wx/msw/mslu.h:
  59 #undef DrawStateW
  60 #undef GetOpenFileNameW
  61 #undef GetSaveFileNameW
  62
  63 //------------------------------------------------------------------------
  64 // Wrongly implemented functions from unicows.dll
  65 //------------------------------------------------------------------------
  66
  67 #if wxUSE_GUI
  68
  69 WXDLLEXPORT int  wxMSLU_DrawStateW(WXHDC dc, WXHBRUSH br, WXFARPROC outputFunc,
  70                                    WXLPARAM lData, WXWPARAM wData,
  71                                    int x, int y, int cx, int cy,
  72                                    unsigned int flags)
  73 {
  74     // VS: There's yet another bug in MSLU: DrawStateW behaves like if it was
  75     //     expecting char*, not wchar_t* input. We have to use DrawStateA
  76     //     explicitly.
  77
  78     if ( wxUsingUnicowsDll() )
  79     {
  80         return DrawStateA((HDC)dc, (HBRUSH)br, (DRAWSTATEPROC)outputFunc,
  81                           (LPARAM)(const char*)
  82                                 wxConvLocal.cWX2MB((const wxChar*)lData),
  83                           wData, x, y, cx, cy, flags);
  84     }
  85     else
  86     {
  87         return DrawStateW((HDC)dc, (HBRUSH)br, (DRAWSTATEPROC)outputFunc,
  88                           lData, wData, x, y, cx, cy, flags);
  89     }
  90 }
  91
  92 static void wxFixOPENFILENAME(LPOPENFILENAME ofn)
  93 {
  94 #ifdef OFN_EXPLORER
  95     // VS: there's a bug in unicows.dll - when multiple files are selected,
  96     //     of.nFileOffset doesn't point to the first filename but rather to
  97     //     the last component of directory name. This bug is known to MSLU
  98     //     developers, but they are not going to fix it: "this is a true
  99     //     limitation, that we have decided to live with" and "working
 100     //     harder on this case just did not seem worth the effort"...
 101     //
 102     //     Our only option is to try to fix it ourselves:
 103
 104     if ( (ofn->Flags & OFN_ALLOWMULTISELECT) &&
 105          ofn->lpstrFile[ofn->nFileOffset-1] != wxT('\0') )
 106     {
 107         if ( wxDirExists(ofn->lpstrFile) )
 108         {
 109             // 1st component is dir => multiple files selected
 110             ofn->nFileOffset = wxStrlen(ofn->lpstrFile)+1;
 111         }
 112     }
 113 #endif
 114 }
 115
 116 WXDLLEXPORT int wxMSLU_GetOpenFileNameW(void *ofn)
 117 {
 118     int ret = GetOpenFileName((LPOPENFILENAME)ofn);
 119     if ( wxUsingUnicowsDll() && ret != 0 )
 120         wxFixOPENFILENAME((LPOPENFILENAME)ofn);
 121     return ret;
 122 }
 123
 124 WXDLLEXPORT int wxMSLU_GetSaveFileNameW(void *ofn)
 125 {
 126     int ret = GetSaveFileName((LPOPENFILENAME)ofn);
 127     if ( wxUsingUnicowsDll() && ret != 0 )
 128         wxFixOPENFILENAME((LPOPENFILENAME)ofn);
 129     return ret;
 130 }
 131
 132 #endif // wxUSE_GUI
 133
 134 //------------------------------------------------------------------------
 135 // Missing libc file manipulation functions in Win9x
 136 //------------------------------------------------------------------------
 137
 138 #if wxUSE_BASE
 139
 140 WXDLLEXPORT int wxMSLU__trename(const wxChar *oldname, const wxChar *newname)
 141 {
 142     if ( wxUsingUnicowsDll() )
 143         return rename(wxConvFile.cWX2MB(oldname), wxConvFile.cWX2MB(newname));
 144     else
 145         return _trename(oldname, newname);
 146 }
 147
 148 WXDLLEXPORT int wxMSLU__tremove(const wxChar *name)
 149 {
 150     if ( wxUsingUnicowsDll() )
 151         return remove(wxConvFile.cWX2MB(name));
 152     else
 153         return _tremove(name);
 154 }
 155
 156 #endif // wxUSE_BASE
 157
 158 #endif // wxUSE_UNICODE_MSLU
 159
 160 #endif // __WXPALMOS__