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 #include <dir.h>
  22 #endif
  23
  24 #ifndef WX_PRECOMP
  25     #include "wx/defs.h"
  26 #endif
  27
  28 #if wxUSE_UNICODE_MSLU
  29
  30 //------------------------------------------------------------------------
  31 //
  32 // NB: MSLU only covers Win32 API, it doesn't provide Unicode implementation of
  33 //     libc functions. Unfortunately, some of MSVCRT wchar_t functions
  34 //     (e.g. _wopen) don't work on Windows 9x, so we have to workaround it
  35 //     by calling the char version. We still want to use wchar_t version on
  36 //     NT/2000/XP, though, because they allow for Unicode file names.
  37 //
  38 //     Moreover, there are bugs in unicows.dll, of course. We have to
  39 //     workaround them, too.
  40 //
  41 //------------------------------------------------------------------------
  42
  43 #include "wx/msw/private.h"
  44 #include "wx/msw/mslu.h"
  45
  46 #include <stdio.h>
  47 #include <io.h>
  48 #include <sys/stat.h>
  49
  50 #ifdef __VISUALC__
  51     #include <direct.h>
  52 #endif
  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 int  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 int wxMSLU_GetOpenFileNameW(void *ofn)
 113 {
 114     int ret = GetOpenFileName((LPOPENFILENAME)ofn);
 115     if ( wxUsingUnicowsDll() && ret != 0 )
 116         wxFixOPENFILENAME((LPOPENFILENAME)ofn);
 117     return ret;
 118 }
 119
 120 WXDLLEXPORT int wxMSLU_GetSaveFileNameW(void *ofn)
 121 {
 122     int 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 #if wxUSE_BASE
 135
 136 WXDLLEXPORT int wxMSLU__trename(const wxChar *oldname, const wxChar *newname)
 137 {
 138     if ( wxUsingUnicowsDll() )
 139         return rename(wxConvFile.cWX2MB(oldname), wxConvFile.cWX2MB(newname));
 140     else
 141         return _trename(oldname, newname);
 142 }
 143
 144 WXDLLEXPORT int wxMSLU__tremove(const wxChar *name)
 145 {
 146     if ( wxUsingUnicowsDll() )
 147         return remove(wxConvFile.cWX2MB(name));
 148     else
 149         return _tremove(name);
 150 }
 151
 152 #if defined( __VISUALC__ ) \
 153     || ( defined(__MINGW32__) && wxCHECK_W32API_VERSION( 0, 5 ) ) \
 154     || ( defined(__MWERKS__) && defined(__WXMSW__) ) \
 155     || ( defined(__BORLANDC__) && (__BORLANDC__ > 0x460) )
 156
 157 WXDLLEXPORT int wxMSLU__wopen(const wxChar *name, int flags, int mode)
 158 {
 159     if ( wxUsingUnicowsDll() )
 160 #ifdef __BORLANDC__
 161         return open(wxConvFile.cWX2MB(name), flags, mode);
 162 #else
 163         return _open(wxConvFile.cWX2MB(name), flags, mode);
 164 #endif
 165     else
 166         return _wopen(name, flags, mode);
 167 }
 168
 169 WXDLLEXPORT int wxMSLU__waccess(const wxChar *name, int mode)
 170 {
 171     if ( wxUsingUnicowsDll() )
 172         return _access(wxConvFile.cWX2MB(name), mode);
 173     else
 174         return _waccess(name, mode);
 175 }
 176
 177 WXDLLEXPORT int wxMSLU__wmkdir(const wxChar *name)
 178 {
 179     if ( wxUsingUnicowsDll() )
 180         return _mkdir(wxConvFile.cWX2MB(name));
 181     else
 182         return _wmkdir(name);
 183 }
 184
 185 WXDLLEXPORT int wxMSLU__wrmdir(const wxChar *name)
 186 {
 187     if ( wxUsingUnicowsDll() )
 188         return _rmdir(wxConvFile.cWX2MB(name));
 189     else
 190         return _wrmdir(name);
 191 }
 192
 193 WXDLLEXPORT int wxMSLU__wstat(const wxChar *name, struct _stat *buffer)
 194 {
 195     if ( wxUsingUnicowsDll() )
 196         return _stat((const char*)wxConvFile.cWX2MB(name), buffer);
 197     else
 198         return _wstat(name, buffer);
 199 }
 200
 201 #endif // compilers having wopen() &c
 202
 203 #endif // wxUSE_BASE
 204
 205 #endif // wxUSE_UNICODE_MSLU