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