[jimtabor] 42903: - Patch by Dmitry Timoshkov : user32: Return 0 from DefDlgProc and dialog loop for invalid dialog handles. Need to update user32 wine tests.

Author: jimtabor
Date: Mon Aug 24 08:10:52 2009
New Revision: 42903

URL: http://svn.reactos.org/svn/reactos?rev=42903&view=rev
Log:
- Patch by Dmitry Timoshkov : user32: Return 0 from DefDlgProc and dialog loop for invalid dialog handles. Need to update user32 wine tests.

Modified:
    trunk/reactos/dll/win32/user32/windows/dialog.c

Modified: trunk/reactos/dll/win32/user32/windows/dialog.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/user32/windows/di...
==============================================================================
--- trunk/reactos/dll/win32/user32/windows/dialog.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/user32/windows/dialog.c [iso-8859-1] Mon Aug 24 08:10:52 2009
@@ -142,6 +142,8 @@
 *
 * Get the DIALOGINFO structure of a window, allocating it if needed
 * and 'create' is TRUE.
+*
+* ReactOS
 */
 DIALOGINFO * DIALOG_get_info( HWND hWnd, BOOL create )
 {
@@ -151,6 +153,11 @@
     if(!dlgInfo && create)
     {
         pWindow = ValidateHwnd( hWnd );
+        if (!pWindow)
+        {
+           SetLastError( ERROR_INVALID_WINDOW_HANDLE );
+           return NULL;
+        }

if (pWindow && pWindow->cbwndExtra >= DLGWINDOWEXTRA && hWnd != GetDesktopWindow())
         {
@@ -551,7 +558,7 @@
                 if (!GetMessageW( &msg, 0, 0, 0 )) break;
             }

-            if (!IsWindow( hwnd )) return -1;
+            if (!IsWindow( hwnd )) return 0;
             if (!(dlgInfo->flags & DF_END) && !IsDialogMessageW( hwnd, &msg))
             {
                 TranslateMessage( &msg );
@@ -1585,7 +1592,7 @@
     BOOL result = FALSE;

/* Perform DIALOGINFO initialization if not done */
-    if(!(dlgInfo = DIALOG_get_info( hDlg, TRUE ))) return -1;
+    if(!(dlgInfo = DIALOG_get_info( hDlg, TRUE ))) return 0;

SetWindowLongPtrW( hDlg, DWLP_MSGRESULT, 0 );

@@ -1645,7 +1652,7 @@
     BOOL result = FALSE;

/* Perform DIALOGINFO initialization if not done */
-    if(!(dlgInfo = DIALOG_get_info( hDlg, TRUE ))) return -1;
+    if(!(dlgInfo = DIALOG_get_info( hDlg, TRUE ))) return 0;

SetWindowLongPtrW( hDlg, DWLP_MSGRESULT, 0 );