src/msw/mslu.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/mslu.cpp
   3 // Purpose:     Fixes for bugs in MSLU
   4 // Author:      Vaclav Slavik
   5 // Modified by:
   6 // Created:     2002/02/17
   7 // Copyright:   (c) 2002 Vaclav Slavik
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // For compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16     #include <dir.h>
  17 #endif
  18
  19 #ifndef WX_PRECOMP
  20     #include "wx/utils.h"
  21 #endif
  22
  23 #define wxHAS_HUGE_FILES
  24
  25 //------------------------------------------------------------------------
  26 // Check for use of MSLU
  27 //------------------------------------------------------------------------
  28
  29 #if wxUSE_BASE
  30
  31 bool WXDLLIMPEXP_BASE wxUsingUnicowsDll()
  32 {
  33 #if wxUSE_UNICODE_MSLU
  34     return (wxGetOsVersion() == wxOS_WINDOWS_9X);
  35 #else
  36     return false;
  37 #endif
  38 }
  39
  40 #endif // wxUSE_BASE
  41
  42
  43 #if wxUSE_UNICODE_MSLU
  44
  45 //------------------------------------------------------------------------
  46 //
  47 // NB: MSLU only covers Win32 API, it doesn't provide Unicode implementation of
  48 //     libc functions. Unfortunately, some of MSVCRT wchar_t functions
  49 //     (e.g. _wopen) don't work on Windows 9x, so we have to workaround it
  50 //     by calling the char version. We still want to use wchar_t version on
  51 //     NT/2000/XP, though, because they allow for Unicode file names.
  52 //
  53 //     Moreover, there are bugs in unicows.dll, of course. We have to
  54 //     workaround them, too.
  55 //
  56 //------------------------------------------------------------------------
  57
  58 #include "wx/msw/private.h"
  59 #include "wx/msw/mslu.h"
  60
  61 #include <stdio.h>
  62 #include <io.h>
  63 #include <sys/stat.h>
  64
  65 #ifdef __VISUALC__
  66     #include <direct.h>
  67 #endif
  68
  69 // Undef redirection macros defined in wx/msw/wrapwin.h:
  70 #undef DrawStateW
  71 #undef GetOpenFileNameW
  72 #undef GetSaveFileNameW
  73
  74 //------------------------------------------------------------------------
  75 // Wrongly implemented functions from unicows.dll
  76 //------------------------------------------------------------------------
  77
  78 #if wxUSE_GUI
  79
  80 WXDLLEXPORT int  wxMSLU_DrawStateW(WXHDC dc, WXHBRUSH br, WXFARPROC outputFunc,
  81                                    WXLPARAM lData, WXWPARAM wData,
  82                                    int x, int y, int cx, int cy,
  83                                    unsigned int flags)
  84 {
  85     // VS: There's yet another bug in MSLU: DrawStateW behaves like if it was
  86     //     expecting char*, not wchar_t* input. We have to use DrawStateA
  87     //     explicitly.
  88
  89     if ( wxUsingUnicowsDll() )
  90     {
  91         return DrawStateA((HDC)dc, (HBRUSH)br, (DRAWSTATEPROC)outputFunc,
  92                           (LPARAM)(const char*)
  93                                 wxConvLocal.cWX2MB((const wxChar*)lData),
  94                           wData, x, y, cx, cy, flags);
  95     }
  96     else
  97     {
  98         return DrawStateW((HDC)dc, (HBRUSH)br, (DRAWSTATEPROC)outputFunc,
  99                           lData, wData, x, y, cx, cy, flags);
 100     }
 101 }
 102
 103 static void wxFixOPENFILENAME(LPOPENFILENAME ofn)
 104 {
 105 #ifdef OFN_EXPLORER
 106     // VS: there's a bug in unicows.dll - when multiple files are selected,
 107     //     of.nFileOffset doesn't point to the first filename but rather to
 108     //     the last component of directory name. This bug is known to MSLU
 109     //     developers, but they are not going to fix it: "this is a true
 110     //     limitation, that we have decided to live with" and "working
 111     //     harder on this case just did not seem worth the effort"...
 112     //
 113     //     Our only option is to try to fix it ourselves:
 114
 115     if ( (ofn->Flags & OFN_ALLOWMULTISELECT) &&
 116          ofn->lpstrFile[ofn->nFileOffset-1] != wxT('\0') )
 117     {
 118         if ( wxDirExists(ofn->lpstrFile) )
 119         {
 120             // 1st component is dir => multiple files selected
 121             ofn->nFileOffset = wxStrlen(ofn->lpstrFile)+1;
 122         }
 123     }
 124 #endif // OFN_EXPLORER
 125 }
 126
 127 WXDLLEXPORT int wxMSLU_GetOpenFileNameW(void *ofn)
 128 {
 129     int ret = GetOpenFileName((LPOPENFILENAME)ofn);
 130     if ( wxUsingUnicowsDll() && ret != 0 )
 131         wxFixOPENFILENAME((LPOPENFILENAME)ofn);
 132     return ret;
 133 }
 134
 135 WXDLLEXPORT int wxMSLU_GetSaveFileNameW(void *ofn)
 136 {
 137     int ret = GetSaveFileName((LPOPENFILENAME)ofn);
 138     if ( wxUsingUnicowsDll() && ret != 0 )
 139         wxFixOPENFILENAME((LPOPENFILENAME)ofn);
 140     return ret;
 141 }
 142
 143 #endif // wxUSE_GUI
 144
 145 //------------------------------------------------------------------------
 146 // Missing libc file manipulation functions in Win9x
 147 //------------------------------------------------------------------------
 148
 149 #if wxUSE_BASE
 150
 151 WXDLLIMPEXP_BASE int wxMSLU__wrename(const wchar_t *oldname,
 152                                      const wchar_t *newname)
 153 {
 154     if ( wxUsingUnicowsDll() )
 155         return rename(wxConvFile.cWX2MB(oldname), wxConvFile.cWX2MB(newname));
 156     else
 157         return _wrename(oldname, newname);
 158 }
 159
 160 WXDLLIMPEXP_BASE int wxMSLU__wremove(const wchar_t *name)
 161 {
 162     if ( wxUsingUnicowsDll() )
 163         return remove(wxConvFile.cWX2MB(name));
 164     else
 165         return _wremove(name);
 166 }
 167
 168 WXDLLIMPEXP_BASE FILE* wxMSLU__wfopen(const wchar_t *name,const wchar_t* mode)
 169 {
 170     if ( wxUsingUnicowsDll() )
 171         return fopen(wxConvFile.cWX2MB(name),wxConvFile.cWX2MB(mode));
 172     else
 173         return _wfopen(name,mode);
 174 }
 175
 176 WXDLLIMPEXP_BASE FILE* wxMSLU__wfreopen(const wchar_t *name,
 177                                         const wchar_t* mode,
 178                                         FILE *stream)
 179 {
 180     if ( wxUsingUnicowsDll() )
 181         return freopen(wxConvFile.cWX2MB(name), wxConvFile.cWX2MB(mode), stream);
 182     else
 183         return _wfreopen(name, mode, stream);
 184 }
 185
 186 WXDLLIMPEXP_BASE int wxMSLU__wopen(const wchar_t *name, int flags, int mode)
 187 {
 188     if ( wxUsingUnicowsDll() )
 189         return wxCRT_OpenA(wxConvFile.cWX2MB(name), flags, mode);
 190     else
 191         return wxCRT_OpenW(name, flags, mode);
 192 }
 193
 194 WXDLLIMPEXP_BASE int wxMSLU__waccess(const wchar_t *name, int mode)
 195 {
 196     if ( wxUsingUnicowsDll() )
 197         return wxCRT_AccessA(wxConvFile.cWX2MB(name), mode);
 198     else
 199         return wxCRT_AccessW(name, mode);
 200 }
 201
 202 WXDLLIMPEXP_BASE int wxMSLU__wchmod(const wchar_t *name, int mode)
 203 {
 204     if ( wxUsingUnicowsDll() )
 205         return wxCRT_ChmodA(wxConvFile.cWX2MB(name), mode);
 206     else
 207         return wxCRT_ChmodW(name, mode);
 208 }
 209
 210 WXDLLIMPEXP_BASE int wxMSLU__wmkdir(const wchar_t *name)
 211 {
 212     if ( wxUsingUnicowsDll() )
 213         return wxCRT_MkDirA(wxConvFile.cWX2MB(name));
 214     else
 215         return wxCRT_MkDirW(name);
 216 }
 217
 218 WXDLLIMPEXP_BASE int wxMSLU__wrmdir(const wchar_t *name)
 219 {
 220     if ( wxUsingUnicowsDll() )
 221         return wxCRT_RmDirA(wxConvFile.cWX2MB(name));
 222     else
 223         return wxCRT_RmDirW(name);
 224 }
 225
 226 WXDLLIMPEXP_BASE int wxMSLU__wstat(const wchar_t *name, wxStructStat *buffer)
 227 {
 228     if ( wxUsingUnicowsDll() )
 229         return wxCRT_StatA((const char*)wxConvFile.cWX2MB(name), buffer);
 230     else
 231         return wxCRT_StatW(name, buffer);
 232 }
 233
 234 #endif // wxUSE_BASE
 235
 236 #endif // wxUSE_UNICODE_MSLU