src/msw/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 #ifdef __GNUG__
  13 #pragma implementation
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/defs.h"
  25 #endif
  26
  27 #if wxUSE_UNICODE_MSLU
  28
  29 //------------------------------------------------------------------------
  30 //
  31 // NB: MSLU only covers Win32 API, it doesn't provide Unicode implementation of
  32 //     libc functions. Unfortunately, some of MSVCRT wchar_t functions
  33 //     (e.g. _wopen) don't work on Windows 9x, so we have to workaround it
  34 //     by calling the char version. We still want to use wchar_t version on
  35 //     NT/2000/XP, though, because they allow for Unicode file names.
  36 //
  37 //     Moreover, there are bugs in unicows.dll, of course. We have to
  38 //     workaround them, too.
  39 //
  40 //------------------------------------------------------------------------
  41
  42 #include "wx/msw/private.h"
  43 #include "wx/msw/mslu.h"
  44
  45 #include <stdio.h>
  46 #include <io.h>
  47
  48 #ifdef __GNUWIN32__
  49     #include <wchar.h>
  50     #include <sys/stat.h>
  51 #endif
  52
  53
  54 // Undef redirection macros defined in wx/msw/mslu.h:
  55 #undef DrawStateW
  56 #undef GetOpenFileNameW
  57 #undef GetSaveFileNameW
  58
  59 //------------------------------------------------------------------------
  60 // Wrongly implemented functions from unicows.dll
  61 //------------------------------------------------------------------------
  62
  63 #if wxUSE_GUI
  64
  65 WXDLLEXPORT bool wxMSLU_DrawStateW(WXHDC dc, WXHBRUSH br, WXFARPROC outputFunc,
  66                                    WXLPARAM lData, WXWPARAM wData,
  67                                    int x, int y, int cx, int cy,
  68                                    unsigned int flags)
  69 {
  70     // VS: There's yet another bug in MSLU: DrawStateW behaves like if it was
  71     //     expecting char*, not wchar_t* input. We have to use DrawStateA
  72     //     explicitly.
  73
  74     if ( wxUsingUnicowsDll() )
  75     {
  76                 return DrawStateA((HDC)dc, (HBRUSH)br, (DRAWSTATEPROC)outputFunc,
  77                           (LPARAM)(const char*)
  78                                 wxConvLocal.cWX2MB((const wxChar*)lData),
  79                           wData, x, y, cx, cy, flags);
  80     }
  81     else
  82     {
  83         return DrawStateW((HDC)dc, (HBRUSH)br, (DRAWSTATEPROC)outputFunc,
  84                           lData, wData, x, y, cx, cy, flags);
  85     }
  86 }
  87
  88 static void wxFixOPENFILENAME(LPOPENFILENAME ofn)
  89 {
  90 #ifdef OFN_EXPLORER
  91     // VS: there's a bug in unicows.dll - when multiple files are selected,
  92     //     of.nFileOffset doesn't point to the first filename but rather to
  93     //     the last component of directory name. This bug is known to MSLU
  94     //     developers, but they are not going to fix it: "this is a true
  95     //     limitation, that we have decided to live with" and "working
  96     //     harder on this case just did not seem worth the effort"...
  97     //
  98     //     Our only option is to try to fix it ourselves:
  99
 100     if ( (ofn->Flags & OFN_ALLOWMULTISELECT) &&
 101          ofn->lpstrFile[ofn->nFileOffset-1] != wxT('\0') )
 102     {
 103         if ( wxDirExists(ofn->lpstrFile) )
 104         {
 105             // 1st component is dir => multiple files selected
 106             ofn->nFileOffset = wxStrlen(ofn->lpstrFile)+1;
 107         }
 108     }
 109 #endif
 110 }
 111
 112 WXDLLEXPORT bool wxMSLU_GetOpenFileNameW(void *ofn)
 113 {
 114     bool ret = GetOpenFileName((LPOPENFILENAME)ofn);
 115     if ( wxUsingUnicowsDll() && ret != 0 )
 116         wxFixOPENFILENAME((LPOPENFILENAME)ofn);
 117     return ret;
 118 }
 119
 120 WXDLLEXPORT bool wxMSLU_GetSaveFileNameW(void *ofn)
 121 {
 122     bool ret = GetSaveFileName((LPOPENFILENAME)ofn);
 123     if ( wxUsingUnicowsDll() && ret != 0 )
 124         wxFixOPENFILENAME((LPOPENFILENAME)ofn);
 125     return ret;
 126 }
 127
 128 #endif // wxUSE_GUI
 129
 130 //------------------------------------------------------------------------
 131 // Missing libc file manipulation functions in Win9x
 132 //------------------------------------------------------------------------
 133
 134 WXDLLEXPORT int wxMSLU__trename(const wxChar *oldname, const wxChar *newname)
 135 {
 136     if ( wxUsingUnicowsDll() )
 137         return rename(wxConvFile.cWX2MB(oldname), wxConvFile.cWX2MB(newname));
 138     else
 139         return _trename(oldname, newname);
 140 }
 141
 142 WXDLLEXPORT int wxMSLU__tremove(const wxChar *name)
 143 {
 144     if ( wxUsingUnicowsDll() )
 145         return remove(wxConvFile.cWX2MB(name));
 146     else
 147         return _tremove(name);
 148 }
 149
 150 #if defined( __VISUALC__ ) \
 151     || ( defined(__MINGW32__) && wxCHECK_W32API_VERSION( 0, 5 ) ) \
 152     || ( defined(__MWERKS__) && defined(__WXMSW__) )
 153
 154 WXDLLEXPORT int wxMSLU__wopen(const wxChar *name, int flags, int mode)
 155 {
 156     if ( wxUsingUnicowsDll() )
 157         return _open(wxConvFile.cWX2MB(name), flags, mode);
 158     else
 159         return _wopen(name, flags, mode);
 160 }
 161
 162 WXDLLEXPORT int wxMSLU__waccess(const wxChar *name, int mode)
 163 {
 164     if ( wxUsingUnicowsDll() )
 165         return _access(wxConvFile.cWX2MB(name), mode);
 166     else
 167         return _waccess(name, mode);
 168 }
 169
 170 WXDLLEXPORT int wxMSLU__wmkdir(const wxChar *name)
 171 {
 172     if ( wxUsingUnicowsDll() )
 173         return _mkdir(wxConvFile.cWX2MB(name));
 174     else
 175         return _wmkdir(name);
 176 }
 177
 178 WXDLLEXPORT int wxMSLU__wrmdir(const wxChar *name)
 179 {
 180     if ( wxUsingUnicowsDll() )
 181         return _rmdir(wxConvFile.cWX2MB(name));
 182     else
 183         return _wrmdir(name);
 184 }
 185
 186 WXDLLEXPORT int wxMSLU__wstat(const wxChar *name, struct _stat *buffer)
 187 {
 188     if ( wxUsingUnicowsDll() )
 189         return _stat((const char*)wxConvFile.cWX2MB(name), buffer);
 190     else
 191         return _wstat(name, buffer);
 192 }
 193
 194 #endif
 195
 196 #endif // wxUSE_UNICODE_MSLU