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 #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 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #include <dir.h>
  22 #endif
  23
  24 #ifndef WX_PRECOMP
  25     #include "wx/defs.h"
  26 #endif
  27
  28 //------------------------------------------------------------------------
  29
  30 #if !wxUSE_UNICODE_MSLU
  31
  32 bool wxUsingUnicowsDll()
  33 {
  34     return false;
  35 }
  36
  37 #else
  38
  39 //------------------------------------------------------------------------
  40 //
  41 // NB: MSLU only covers Win32 API, it doesn't provide Unicode implementation of
  42 //     libc functions. Unfortunately, some of MSVCRT wchar_t functions
  43 //     (e.g. _wopen) don't work on Windows 9x, so we have to workaround it
  44 //     by calling the char version. We still want to use wchar_t version on
  45 //     NT/2000/XP, though, because they allow for Unicode file names.
  46 //
  47 //     Moreover, there are bugs in unicows.dll, of course. We have to
  48 //     workaround them, too.
  49 //
  50 //------------------------------------------------------------------------
  51
  52 #include "wx/msw/private.h"
  53 #include "wx/msw/mslu.h"
  54
  55 #include <stdio.h>
  56 #include <io.h>
  57 #include <sys/stat.h>
  58
  59 #ifdef __VISUALC__
  60     #include <direct.h>
  61 #endif
  62
  63 // Undef redirection macros defined in wx/msw/mslu.h:
  64 #undef DrawStateW
  65 #undef GetOpenFileNameW
  66 #undef GetSaveFileNameW
  67
  68 // Returns true if we are running under Unicode emulation in Win9x environment.
  69 // Workaround hacks take effect only if this condition is met
  70 bool wxUsingUnicowsDll()
  71 {
  72     return (wxGetOsVersion() == wxWIN95);
  73 }
  74
  75 //------------------------------------------------------------------------
  76 // Wrongly implemented functions from unicows.dll
  77 //------------------------------------------------------------------------
  78
  79 #if wxUSE_GUI
  80
  81 WXDLLEXPORT int  wxMSLU_DrawStateW(WXHDC dc, WXHBRUSH br, WXFARPROC outputFunc,
  82                                    WXLPARAM lData, WXWPARAM wData,
  83                                    int x, int y, int cx, int cy,
  84                                    unsigned int flags)
  85 {
  86     // VS: There's yet another bug in MSLU: DrawStateW behaves like if it was
  87     //     expecting char*, not wchar_t* input. We have to use DrawStateA
  88     //     explicitly.
  89
  90     if ( wxUsingUnicowsDll() )
  91     {
  92         return DrawStateA((HDC)dc, (HBRUSH)br, (DRAWSTATEPROC)outputFunc,
  93                           (LPARAM)(const char*)
  94                                 wxConvLocal.cWX2MB((const wxChar*)lData),
  95                           wData, x, y, cx, cy, flags);
  96     }
  97     else
  98     {
  99         return DrawStateW((HDC)dc, (HBRUSH)br, (DRAWSTATEPROC)outputFunc,
 100                           lData, wData, x, y, cx, cy, flags);
 101     }
 102 }
 103
 104 static void wxFixOPENFILENAME(LPOPENFILENAME ofn)
 105 {
 106 #ifdef OFN_EXPLORER
 107     // VS: there's a bug in unicows.dll - when multiple files are selected,
 108     //     of.nFileOffset doesn't point to the first filename but rather to
 109     //     the last component of directory name. This bug is known to MSLU
 110     //     developers, but they are not going to fix it: "this is a true
 111     //     limitation, that we have decided to live with" and "working
 112     //     harder on this case just did not seem worth the effort"...
 113     //
 114     //     Our only option is to try to fix it ourselves:
 115
 116     if ( (ofn->Flags & OFN_ALLOWMULTISELECT) &&
 117          ofn->lpstrFile[ofn->nFileOffset-1] != wxT('\0') )
 118     {
 119         if ( wxDirExists(ofn->lpstrFile) )
 120         {
 121             // 1st component is dir => multiple files selected
 122             ofn->nFileOffset = wxStrlen(ofn->lpstrFile)+1;
 123         }
 124     }
 125 #endif
 126 }
 127
 128 WXDLLEXPORT int wxMSLU_GetOpenFileNameW(void *ofn)
 129 {
 130     int ret = GetOpenFileName((LPOPENFILENAME)ofn);
 131     if ( wxUsingUnicowsDll() && ret != 0 )
 132         wxFixOPENFILENAME((LPOPENFILENAME)ofn);
 133     return ret;
 134 }
 135
 136 WXDLLEXPORT int wxMSLU_GetSaveFileNameW(void *ofn)
 137 {
 138     int ret = GetSaveFileName((LPOPENFILENAME)ofn);
 139     if ( wxUsingUnicowsDll() && ret != 0 )
 140         wxFixOPENFILENAME((LPOPENFILENAME)ofn);
 141     return ret;
 142 }
 143
 144 #endif // wxUSE_GUI
 145
 146 //------------------------------------------------------------------------
 147 // Missing libc file manipulation functions in Win9x
 148 //------------------------------------------------------------------------
 149
 150 #if wxUSE_BASE
 151
 152 WXDLLIMPEXP_BASE int wxMSLU__trename(const wxChar *oldname,
 153                                      const wxChar *newname)
 154 {
 155     if ( wxUsingUnicowsDll() )
 156         return rename(wxConvFile.cWX2MB(oldname), wxConvFile.cWX2MB(newname));
 157     else
 158         return _trename(oldname, newname);
 159 }
 160
 161 WXDLLIMPEXP_BASE int wxMSLU__tremove(const wxChar *name)
 162 {
 163     if ( wxUsingUnicowsDll() )
 164         return remove(wxConvFile.cWX2MB(name));
 165     else
 166         return _tremove(name);
 167 }
 168
 169 #if defined( __VISUALC__ ) \
 170     || ( defined(__MINGW32__) && wxCHECK_W32API_VERSION( 0, 5 ) ) \
 171     || ( defined(__MWERKS__) && defined(__WXMSW__) ) \
 172     || ( defined(__BORLANDC__) && (__BORLANDC__ > 0x460) )
 173
 174 WXDLLIMPEXP_BASE int wxMSLU__wopen(const wxChar *name, int flags, int mode)
 175 {
 176     if ( wxUsingUnicowsDll() )
 177 #ifdef __BORLANDC__
 178         return open(wxConvFile.cWX2MB(name), flags, mode);
 179 #else
 180         return _open(wxConvFile.cWX2MB(name), flags, mode);
 181 #endif
 182     else
 183         return _wopen(name, flags, mode);
 184 }
 185
 186 WXDLLIMPEXP_BASE int wxMSLU__waccess(const wxChar *name, int mode)
 187 {
 188     if ( wxUsingUnicowsDll() )
 189         return _access(wxConvFile.cWX2MB(name), mode);
 190     else
 191         return _waccess(name, mode);
 192 }
 193
 194 WXDLLIMPEXP_BASE int wxMSLU__wmkdir(const wxChar *name)
 195 {
 196     if ( wxUsingUnicowsDll() )
 197         return _mkdir(wxConvFile.cWX2MB(name));
 198     else
 199         return _wmkdir(name);
 200 }
 201
 202 WXDLLIMPEXP_BASE int wxMSLU__wrmdir(const wxChar *name)
 203 {
 204     if ( wxUsingUnicowsDll() )
 205         return _rmdir(wxConvFile.cWX2MB(name));
 206     else
 207         return _wrmdir(name);
 208 }
 209
 210 WXDLLIMPEXP_BASE int wxMSLU__wstat(const wxChar *name, struct _stat *buffer)
 211 {
 212     if ( wxUsingUnicowsDll() )
 213         return _stat((const char*)wxConvFile.cWX2MB(name), buffer);
 214     else
 215         return _wstat(name, buffer);
 216 }
 217
 218 WXDLLIMPEXP_BASE int wxMSLU__wstati64(const wxChar *name, struct _stati64 *buffer)
 219 {
 220     if ( wxUsingUnicowsDll() )
 221         return _stati64((const char*)wxConvFile.cWX2MB(name), buffer);
 222     else
 223         return _wstati64(name, buffer);
 224 }
 225
 226 #endif // compilers having wopen() &c
 227
 228 #endif // wxUSE_BASE
 229
 230 #endif // wxUSE_UNICODE_MSLU