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