fixes bug 414369

[wxWidgets.git] / src / msw / filedlg.cpp

diff --git a/src/msw/filedlg.cpp b/src/msw/filedlg.cpp
index b3f2a2999bae66f636bf8030b1e4028ca9244eb9..805374a8e92b0e2e7832d5ffb168ce438f8a4772 100644 (file)
--- a/src/msw/filedlg.cpp
+++ b/src/msw/filedlg.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        filedlg.cpp
+// Name:        src/msw/filedlg.cpp

 // Purpose:     wxFileDialog
 // Author:      Julian Smart
 // Modified by:
 // Purpose:     wxFileDialog
 // Author:      Julian Smart
 // Modified by:


@@ -9,13 +9,20 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+

 #ifdef __GNUG__
     #pragma implementation "filedlg.h"
 #endif
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 #ifdef __GNUG__
     #pragma implementation "filedlg.h"
 #endif
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"

-#include "wx/msw/private.h"

 
 #ifdef __BORLANDC__
     #pragma hdrstop
 
 #ifdef __BORLANDC__
     #pragma hdrstop


@@ -28,10 +35,11 @@
     #include "wx/filedlg.h"
     #include "wx/intl.h"
     #include "wx/log.h"
     #include "wx/filedlg.h"
     #include "wx/intl.h"
     #include "wx/log.h"

-
-//    #include "wx/msw/private.h"
+    #include "wx/app.h"

 #endif
 
 #endif
 

+#include "wx/msw/private.h"
+

 #if !defined(__WIN32__) || defined(__SALFORDC__) || defined(__WXWINE__)
     #include <commdlg.h>
 #endif
 #if !defined(__WIN32__) || defined(__SALFORDC__) || defined(__WXWINE__)
     #include <commdlg.h>
 #endif


@@ -42,8 +50,34 @@
 
 #include "wx/tokenzr.h"
 
 
 #include "wx/tokenzr.h"
 

+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+#ifdef __WIN32__
+# define wxMAXPATH   4096
+#else
+# define wxMAXPATH   1024
+#endif
+
+# define wxMAXFILE   1024
+
+# define wxMAXEXT    5
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxWin macros
+// ----------------------------------------------------------------------------
+

 IMPLEMENT_CLASS(wxFileDialog, wxDialog)
 
 IMPLEMENT_CLASS(wxFileDialog, wxDialog)
 

+// ----------------------------------------------------------------------------
+// global functions
+// ----------------------------------------------------------------------------
+

 wxString wxFileSelector(const wxChar *title,
                         const wxChar *defaultDir,
                         const wxChar *defaultFileName,
 wxString wxFileSelector(const wxChar *title,
                         const wxChar *defaultDir,
                         const wxChar *defaultFileName,


@@ -84,7 +118,7 @@ wxString wxFileSelector(const wxChar *title,
                             flags, wxPoint(x, y));
     if( wxStrlen(defaultExtension) != 0 )
     {
                             flags, wxPoint(x, y));
     if( wxStrlen(defaultExtension) != 0 )
     {

-        int filterFind = 1,
+        int filterFind = 0,

             filterIndex = 0;
 
         for( unsigned int i = 0; i < filter2.Len(); i++ )
             filterIndex = 0;
 
         for( unsigned int i = 0; i < filter2.Len(); i++ )


@@ -93,7 +127,6 @@ wxString wxFileSelector(const wxChar *title,
             {
                 // save the start index of the new filter
                 unsigned int is = i++;
             {
                 // save the start index of the new filter
                 unsigned int is = i++;

-                filterIndex++;

 
                 // find the end of the filter
                 for( ; i < filter2.Len(); i++ )
 
                 // find the end of the filter
                 for( ; i < filter2.Len(); i++ )


@@ -105,46 +138,27 @@ wxString wxFileSelector(const wxChar *title,
                 if( i-is-1 > 0 && is+1 < filter2.Len() )
                 {
                     if( filter2.Mid(is+1,i-is-1).Contains(defaultExtension) )
                 if( i-is-1 > 0 && is+1 < filter2.Len() )
                 {
                     if( filter2.Mid(is+1,i-is-1).Contains(defaultExtension) )

-//                    if( filter2.Mid(is+1,i-is-1) == defaultExtension )

                     {
                         filterFind = filterIndex;
                         break;
                     }
                 }
                     {
                         filterFind = filterIndex;
                         break;
                     }
                 }

+
+                filterIndex++;

             }
         }
 
         fileDialog.SetFilterIndex(filterFind);
     }
 
             }
         }
 
         fileDialog.SetFilterIndex(filterFind);
     }
 

+    wxString filename;

     if ( fileDialog.ShowModal() == wxID_OK )
     {
     if ( fileDialog.ShowModal() == wxID_OK )
     {

-        wxStrcpy(wxBuffer, (const wxChar *)fileDialog.GetPath());
-        return wxBuffer;
+        filename = fileDialog.GetPath();

     }
     }

-    else
-        return wxGetEmptyString();
-}
-
-# if __BORLANDC__
-#   include <dir.h>  // for MAXPATH etc. ( Borland 3.1 )
-# endif
-
-# ifndef MAXPATH
-# define MAXPATH   400
-# endif
-
-# ifndef MAXDRIVE
-# define MAXDRIVE  3
-# endif

 
 

-# ifndef MAXFILE
-# define MAXFILE   9
-# endif
-
-# ifndef MAXEXT
-# define MAXEXT    5
-# endif
+    return filename;
+}

 
 
 wxString wxFileSelectorEx(const wxChar *title,
 
 
 wxString wxFileSelectorEx(const wxChar *title,


@@ -158,17 +172,23 @@ wxString wxFileSelectorEx(const wxChar *title,
                        int       y)
 
 {
                        int       y)
 
 {

-    wxFileDialog fileDialog(parent, title ? title : wxT(""), defaultDir ? defaultDir : wxT(""),
-        defaultFileName ? defaultFileName : wxT(""), filter ? filter : wxT(""), flags, wxPoint(x, y));
+    wxFileDialog fileDialog(parent,
+                            title ? title : wxT(""),
+                            defaultDir ? defaultDir : wxT(""),
+                            defaultFileName ? defaultFileName : wxT(""),
+                            filter ? filter : wxT(""),
+                            flags, wxPoint(x, y));

 
 

+    wxString filename;

     if ( fileDialog.ShowModal() == wxID_OK )
     {
     if ( fileDialog.ShowModal() == wxID_OK )
     {

-        *defaultFilterIndex = fileDialog.GetFilterIndex();
-        wxStrcpy(wxBuffer, (const wxChar *)fileDialog.GetPath());
-        return wxBuffer;
+        if ( defaultFilterIndex )
+            *defaultFilterIndex = fileDialog.GetFilterIndex();
+
+        filename = fileDialog.GetPath();

     }
     }

-    else
-        return wxGetEmptyString();
+
+    return filename;

 }
 
 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,
 }
 
 wxFileDialog::wxFileDialog(wxWindow *parent, const wxString& message,


@@ -206,9 +226,11 @@ int wxFileDialog::ShowModal()
 {
     HWND hWnd = 0;
     if (m_parent) hWnd = (HWND) m_parent->GetHWND();
 {
     HWND hWnd = 0;
     if (m_parent) hWnd = (HWND) m_parent->GetHWND();

+    if (!hWnd && wxTheApp->GetTopWindow())
+        hWnd = (HWND) wxTheApp->GetTopWindow()->GetHWND();

 
 

-    static wxChar fileNameBuffer [ MAXPATH ];           // the file-name
-    wxChar        titleBuffer    [ MAXFILE+1+MAXEXT ];  // the file-name, without path
+    static wxChar fileNameBuffer [ wxMAXPATH ];           // the file-name
+    wxChar        titleBuffer    [ wxMAXFILE+1+wxMAXEXT ];  // the file-name, without path

 
     *fileNameBuffer = wxT('\0');
     *titleBuffer    = wxT('\0');
 
     *fileNameBuffer = wxT('\0');
     *titleBuffer    = wxT('\0');


@@ -226,22 +248,23 @@ int wxFileDialog::ShowModal()
         OFN_ALLOWMULTISELECT;
 
     OPENFILENAME of;
         OFN_ALLOWMULTISELECT;
 
     OPENFILENAME of;

-    memset(&of, 0, sizeof(OPENFILENAME));
-
-    of.lpstrCustomFilter = NULL;   // system should not save custom filter
-    of.nMaxCustFilter    = 0L;
-
-    of.nFileOffset       = 0;      // 0-based pointer to filname in lpstFile
-    of.nFileExtension    = 0;      // 0-based pointer to extension in lpstrFile
-    of.lpstrDefExt       = NULL;   // no default extension
-
+    wxZeroMemory(of);
+
+    // the OPENFILENAME struct has been extended in newer version of
+    // comcdlg32.dll, but as we don't use the extended fields anyhow, set
+    // the struct size to the old value - otherwise, the programs compiled
+    // with new headers will not work with the old libraries
+#if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0500)
+    of.lStructSize       = sizeof(OPENFILENAME) -
+                           (sizeof(void *) + 2*sizeof(DWORD));
+#else // old headers

     of.lStructSize       = sizeof(OPENFILENAME);
     of.lStructSize       = sizeof(OPENFILENAME);

+#endif
+

     of.hwndOwner         = hWnd;
     of.lpstrTitle        = WXSTRINGCAST m_message;
     of.hwndOwner         = hWnd;
     of.lpstrTitle        = WXSTRINGCAST m_message;

-
-

     of.lpstrFileTitle    = titleBuffer;
     of.lpstrFileTitle    = titleBuffer;

-    of.nMaxFileTitle     = MAXFILE + 1 + MAXEXT;    // Windows 3.0 and 3.1
+    of.nMaxFileTitle     = wxMAXFILE + 1 + wxMAXEXT;    // Windows 3.0 and 3.1

 
     // Convert forward slashes to backslashes (file selector doesn't like
     // forward slashes)
 
     // Convert forward slashes to backslashes (file selector doesn't like
     // forward slashes)


@@ -298,16 +321,38 @@ int wxFileDialog::ShowModal()
 
     //=== Setting defaultFileName >>=========================================
 
 
     //=== Setting defaultFileName >>=========================================
 

-    wxStrncpy( fileNameBuffer, (const wxChar *)m_fileName, MAXPATH-1 );
-    fileNameBuffer[ MAXPATH-1 ] = wxT('\0');
+    wxStrncpy( fileNameBuffer, (const wxChar *)m_fileName, wxMAXPATH-1 );
+    fileNameBuffer[ wxMAXPATH-1 ] = wxT('\0');

 
     of.lpstrFile = fileNameBuffer;  // holds returned filename
 
     of.lpstrFile = fileNameBuffer;  // holds returned filename

-    of.nMaxFile  = MAXPATH;
+    of.nMaxFile  = wxMAXPATH;

 
     //== Execute FileDialog >>=================================================
 
 
     //== Execute FileDialog >>=================================================
 

-    bool success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0)
+    bool success = (m_dialogStyle & wxSAVE ? GetSaveFileName(&of)
+                                           : GetOpenFileName(&of)) != 0;
+
+    DWORD errCode = CommDlgExtendedError();
+
+#ifdef __WIN32__
+    if (!success && (errCode == CDERR_STRUCTSIZE))
+    {
+        // The struct size has changed so try a smaller or bigger size
+
+        int oldStructSize = of.lStructSize;
+        of.lStructSize       = oldStructSize - (sizeof(void *) + 2*sizeof(DWORD));
+        success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0)

                                             : (GetOpenFileName(&of) != 0);
                                             : (GetOpenFileName(&of) != 0);

+        errCode = CommDlgExtendedError();
+
+        if (!success && (errCode == CDERR_STRUCTSIZE))
+        {
+            of.lStructSize       = oldStructSize + (sizeof(void *) + 2*sizeof(DWORD));
+            success = (m_dialogStyle & wxSAVE) ? (GetSaveFileName(&of) != 0)
+                                            : (GetOpenFileName(&of) != 0);
+        }
+    }
+#endif

 
     if ( success )
     {
 
     if ( success )
     {


@@ -379,8 +424,8 @@ int wxFileDialog::ShowModal()
                     m_fileName = wxString(fileNameBuffer) + extension;
 
                     int len = wxStrlen( fileNameBuffer );
                     m_fileName = wxString(fileNameBuffer) + extension;
 
                     int len = wxStrlen( fileNameBuffer );

-                    wxStrncpy( fileNameBuffer + len, extension, MAXPATH - len );
-                    fileNameBuffer[ MAXPATH -1 ] = wxT('\0');
+                    wxStrncpy( fileNameBuffer + len, extension, wxMAXPATH - len );
+                    fileNameBuffer[ wxMAXPATH -1 ] = wxT('\0');

                 }
             }
 
                 }
             }