Fixing the native Windows file dialog in Rametter-temp-fixes branch

of GtkRadiant. 	The previous code was Plain Old	Wrong (TM) in the way that
it handled determining which "Save as type" was	selected in the	file save
dialog.  This change affects the function file_dialog() in gtkmisc.cpp.
Fix has	been tested on Windows 7 when the pattern input	parameter is something
such as	"map" and when it's null.  Will	test Windows XP	shortly	and follow
up with	another	commit if it's not working correctly there.

THIS COMMIT SHOULD BE MERGED INTO TRUNK	AT SOME	POINT!!!

git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/branches/Rambetter-temp-fixes@351 8a3a26a2-13c4-0310-b231-cf6edde360e5

diff --git a/radiant/gtkmisc.cpp b/radiant/gtkmisc.cpp
index 6b54918018de2cdd0b2c8f6743426e6dda325b05..8af434c7b6d66eb74ec6aa44fefbb47663d0cbff 100644 (file)
--- a/radiant/gtkmisc.cpp
+++ b/radiant/gtkmisc.cpp
@@ -1123,6 +1123,13 @@ public:
     return filetype_t();
   }
 
+  filetype_t GetTypeForIndex(int index) // Zero-based index.
+  {
+    if (index >= 0 && index < m_nTypes)
+      return filetype_t(m_pTypes[index].m_name.c_str(), m_pTypes[index].m_pattern.c_str());
+    return filetype_t();
+  }
+
   char *m_strWin32Filters;
   char **m_pstrGTKMasks;
 private:
@@ -1227,9 +1234,6 @@ const char* file_dialog (void *parent, gboolean open, const char* title, const c
 #endif
 
 #ifdef _WIN32
-  // win32 dialog stores the selected "save as type" extension in the second null-terminated string
-  char customfilter[FILEDLG_CUSTOM_FILTER_LENGTH];
-
   if (g_PrefsDlg.m_bNativeGUI)
   {
 #ifdef FILEDLG_DBG
@@ -1238,19 +1242,22 @@ const char* file_dialog (void *parent, gboolean open, const char* title, const c
     // do that the native way
     /* Place the terminating null character in the szFile. */
     szFile[0] = '\0';
-    customfilter[0] = customfilter[1] = customfilter[2] = '\0';
 
     /* Set the members of the OPENFILENAME structure. */
+    // See http://msdn.microsoft.com/en-us/library/ms646839%28v=vs.85%29.aspx .
     ofn.lStructSize = sizeof(OPENFILENAME);
     ofn.hwndOwner = (HWND)GDK_WINDOW_HWND (g_pParentWnd->m_pWidget->window);
+    ofn.nFilterIndex = 1; // The index is 1-based, not 0-based.  This basically says,
+                          // "select the first filter by default".
     if (pattern)
     {
-      ofn.nFilterIndex = 0;
       ofn.lpstrFilter = typelist.m_strWin32Filters;
     }
-    else ofn.nFilterIndex = 1;
-    ofn.lpstrCustomFilter = customfilter;
-    ofn.nMaxCustFilter = sizeof(customfilter);
+    else
+    {
+      ofn.lpstrFilter = "All files\0*\0\0";
+    }
+    ofn.lpstrCustomFilter = NULL;
     ofn.lpstrFile = szFile;
     ofn.nMaxFile = sizeof(szFile);
     ofn.lpstrFileTitle = NULL; // we don't need to get the name of the file
@@ -1283,7 +1290,7 @@ const char* file_dialog (void *parent, gboolean open, const char* title, const c
     }
 
     if(pattern != NULL)
-      type = typelist.GetTypeForWin32Filter(customfilter+1);
+      type = typelist.GetTypeForIndex(ofn.nFilterIndex - 1);
 
 #ifdef FILEDLG_DBG
     Sys_Printf("Done.\n");