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     #include "wx/utils.h"
  27 #endif
  28
  29 //------------------------------------------------------------------------
  30 // Check for use of MSLU
  31 //------------------------------------------------------------------------
  32
  33 #if wxUSE_BASE
  34
  35 bool WXDLLIMPEXP_BASE wxUsingUnicowsDll()
  36 {
  37 #if wxUSE_UNICODE_MSLU
  38     return (wxGetOsVersion() == wxWIN95);
  39 #else
  40     return false;
  41 #endif
  42 }
  43
  44 #endif // wxUSE_BASE
  45
  46
  47 #if wxUSE_UNICODE_MSLU
  48
  49 //------------------------------------------------------------------------
  50 //
  51 // NB: MSLU only covers Win32 API, it doesn't provide Unicode implementation of
  52 //     libc functions. Unfortunately, some of MSVCRT wchar_t functions
  53 //     (e.g. _wopen) don't work on Windows 9x, so we have to workaround it
  54 //     by calling the char version. We still want to use wchar_t version on
  55 //     NT/2000/XP, though, because they allow for Unicode file names.
  56 //
  57 //     Moreover, there are bugs in unicows.dll, of course. We have to
  58 //     workaround them, too.
  59 //
  60 //------------------------------------------------------------------------
  61
  62 #include "wx/msw/private.h"
  63 #include "wx/msw/mslu.h"
  64
  65 #include <stdio.h>
  66 #include <io.h>
  67 #include <sys/stat.h>
  68
  69 #ifdef __VISUALC__
  70     #include <direct.h>
  71 #endif
  72
  73 // Undef redirection macros defined in wx/msw/mslu.h:
  74 #undef DrawStateW
  75 #undef GetOpenFileNameW
  76 #undef GetSaveFileNameW
  77
  78 //------------------------------------------------------------------------
  79 // Wrongly implemented functions from unicows.dll
  80 //------------------------------------------------------------------------
  81
  82 #if wxUSE_GUI
  83
  84 WXDLLEXPORT int  wxMSLU_DrawStateW(WXHDC dc, WXHBRUSH br, WXFARPROC outputFunc,
  85                                    WXLPARAM lData, WXWPARAM wData,
  86                                    int x, int y, int cx, int cy,
  87                                    unsigned int flags)
  88 {
  89     // VS: There's yet another bug in MSLU: DrawStateW behaves like if it was
  90     //     expecting char*, not wchar_t* input. We have to use DrawStateA
  91     //     explicitly.
  92
  93     if ( wxUsingUnicowsDll() )
  94     {
  95         return DrawStateA((HDC)dc, (HBRUSH)br, (DRAWSTATEPROC)outputFunc,
  96                           (LPARAM)(const char*)
  97                                 wxConvLocal.cWX2MB((const wxChar*)lData),
  98                           wData, x, y, cx, cy, flags);
  99     }
 100     else
 101     {
 102         return DrawStateW((HDC)dc, (HBRUSH)br, (DRAWSTATEPROC)outputFunc,
 103                           lData, wData, x, y, cx, cy, flags);
 104     }
 105 }
 106
 107 static void wxFixOPENFILENAME(LPOPENFILENAME ofn)
 108 {
 109 #ifdef OFN_EXPLORER
 110     // VS: there's a bug in unicows.dll - when multiple files are selected,
 111     //     of.nFileOffset doesn't point to the first filename but rather to
 112     //     the last component of directory name. This bug is known to MSLU
 113     //     developers, but they are not going to fix it: "this is a true
 114     //     limitation, that we have decided to live with" and "working
 115     //     harder on this case just did not seem worth the effort"...
 116     //
 117     //     Our only option is to try to fix it ourselves:
 118
 119     if ( (ofn->Flags & OFN_ALLOWMULTISELECT) &&
 120          ofn->lpstrFile[ofn->nFileOffset-1] != wxT('\0') )
 121     {
 122         if ( wxDirExists(ofn->lpstrFile) )
 123         {
 124             // 1st component is dir => multiple files selected
 125             ofn->nFileOffset = wxStrlen(ofn->lpstrFile)+1;
 126         }
 127     }
 128 #endif
 129 }
 130
 131 WXDLLEXPORT int wxMSLU_GetOpenFileNameW(void *ofn)
 132 {
 133     int ret = GetOpenFileName((LPOPENFILENAME)ofn);
 134     if ( wxUsingUnicowsDll() && ret != 0 )
 135         wxFixOPENFILENAME((LPOPENFILENAME)ofn);
 136     return ret;
 137 }
 138
 139 WXDLLEXPORT int wxMSLU_GetSaveFileNameW(void *ofn)
 140 {
 141     int ret = GetSaveFileName((LPOPENFILENAME)ofn);
 142     if ( wxUsingUnicowsDll() && ret != 0 )
 143         wxFixOPENFILENAME((LPOPENFILENAME)ofn);
 144     return ret;
 145 }
 146
 147 #endif // wxUSE_GUI
 148
 149 //------------------------------------------------------------------------
 150 // Missing libc file manipulation functions in Win9x
 151 //------------------------------------------------------------------------
 152
 153 #if wxUSE_BASE
 154
 155 WXDLLIMPEXP_BASE int wxMSLU__trename(const wxChar *oldname,
 156                                      const wxChar *newname)
 157 {
 158     if ( wxUsingUnicowsDll() )
 159         return rename(wxConvFile.cWX2MB(oldname), wxConvFile.cWX2MB(newname));
 160     else
 161         return _trename(oldname, newname);
 162 }
 163
 164 WXDLLIMPEXP_BASE int wxMSLU__tremove(const wxChar *name)
 165 {
 166     if ( wxUsingUnicowsDll() )
 167         return remove(wxConvFile.cWX2MB(name));
 168     else
 169         return _tremove(name);
 170 }
 171
 172 #if defined( __VISUALC__ ) \
 173     || ( defined(__MINGW32__) && wxCHECK_W32API_VERSION( 0, 5 ) ) \
 174     || ( defined(__MWERKS__) && defined(__WXMSW__) ) \
 175     || ( defined(__BORLANDC__) && (__BORLANDC__ > 0x460) )
 176
 177 WXDLLIMPEXP_BASE int wxMSLU__wopen(const wxChar *name, int flags, int mode)
 178 {
 179     if ( wxUsingUnicowsDll() )
 180 #ifdef __BORLANDC__
 181         return open(wxConvFile.cWX2MB(name), flags, mode);
 182 #else
 183         return _open(wxConvFile.cWX2MB(name), flags, mode);
 184 #endif
 185     else
 186         return _wopen(name, flags, mode);
 187 }
 188
 189 WXDLLIMPEXP_BASE int wxMSLU__waccess(const wxChar *name, int mode)
 190 {
 191     if ( wxUsingUnicowsDll() )
 192         return _access(wxConvFile.cWX2MB(name), mode);
 193     else
 194         return _waccess(name, mode);
 195 }
 196
 197 WXDLLIMPEXP_BASE int wxMSLU__wmkdir(const wxChar *name)
 198 {
 199     if ( wxUsingUnicowsDll() )
 200         return _mkdir(wxConvFile.cWX2MB(name));
 201     else
 202         return _wmkdir(name);
 203 }
 204
 205 WXDLLIMPEXP_BASE int wxMSLU__wrmdir(const wxChar *name)
 206 {
 207     if ( wxUsingUnicowsDll() )
 208         return _rmdir(wxConvFile.cWX2MB(name));
 209     else
 210         return _wrmdir(name);
 211 }
 212
 213 WXDLLIMPEXP_BASE int wxMSLU__wstat(const wxChar *name, struct _stat *buffer)
 214 {
 215     if ( wxUsingUnicowsDll() )
 216         return _stat((const char*)wxConvFile.cWX2MB(name), buffer);
 217     else
 218         return _wstat(name, buffer);
 219 }
 220
 221 WXDLLIMPEXP_BASE int wxMSLU__wstati64(const wxChar *name, struct _stati64 *buffer)
 222 {
 223     if ( wxUsingUnicowsDll() )
 224         return _stati64((const char*)wxConvFile.cWX2MB(name), buffer);
 225     else
 226         return _wstati64(name, buffer);
 227 }
 228
 229 #endif // compilers having wopen() &c
 230
 231 #endif // wxUSE_BASE
 232
 233 #endif // wxUSE_UNICODE_MSLU