Bug 328306 Open/Save dialogs no longer work on Win9x/Me/NT4 even if cairo is disabled. patch by Masatoshi Kimura (emk) <VYV03354@nifty.ne.jp> r+sr=roc

widget/src/windows/nsFilePicker.cpp

@@ -180,9 +180,11 @@ NS_IMETHODIMP nsFilePicker::ShowW(PRInt16 *aReturnVal)
 
     OPENFILENAMEW ofn;
     memset(&ofn, 0, sizeof(ofn));
-
+#if _WIN32_WINNT >= 0x0500
+    ofn.lStructSize = OPENFILENAME_SIZE_VERSION_400;
+#else
     ofn.lStructSize = sizeof(ofn);
-
+#endif
     nsString filterBuffer = mFilterList;
                                   
     if (!initialDir.IsEmpty()) {

widget/src/windows/nsToolkit.cpp

@@ -419,7 +419,11 @@ BOOL CallOpenSaveFileNameA(LPOPENFILENAMEW aFileNameW, BOOL aOpen)
   char tempNameA[MAX_PATH+1];
 
   memset(&ofnA, 0, sizeof(OPENFILENAMEA));
+#if _WIN32_WINNT >= 0x0500
+  ofnA.lStructSize = OPENFILENAME_SIZE_VERSION_400; 
+#else
   ofnA.lStructSize = sizeof(OPENFILENAME); 
+#endif
   ofnA.hwndOwner = aFileNameW->hwndOwner; 
   ofnA.hInstance = aFileNameW->hInstance; 
   if (aFileNameW->lpstrFilter)  {