[greatlrd] 21957: patch from w3seek : Another fix for NtUserFindWindowEx

Author: greatlrd
Date: Sun May 21 10:17:25 2006
New Revision: 21957

URL: http://svn.reactos.ru/svn/reactos?rev=21957&view=rev
Log:
patch from w3seek : Another fix for NtUserFindWindowEx 

Modified:
    trunk/reactos/subsystems/win32/win32k/ntuser/window.c

Modified: trunk/reactos/subsystems/win32/win32k/ntuser/window.c
URL:
http://svn.reactos.ru/svn/reactos/trunk/reactos/subsystems/win32/win32k/ntu…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/ntuser/window.c (original)
+++ trunk/reactos/subsystems/win32/win32k/ntuser/window.c Sun May 21 10:17:25 2006
@@ -2444,13 +2444,16 @@
                             ClassName.Length,
                             sizeof(WCHAR));
            }
-           else if (IS_ATOM(ClassName.Buffer))
+           else if (ClassName.Buffer != NULL && !IS_ATOM(ClassName.Buffer))
            {
-               if (!IntGetAtomFromStringOrAtom(&ClassName,
-                                               &ClassAtom))
-               {
-                   _SEH_LEAVE;
-               }
+               SetLastWin32Error(ERROR_INVALID_PARAMETER);
+               _SEH_LEAVE;
+           }
+
+           if (!IntGetAtomFromStringOrAtom(&ClassName,
+                                           &ClassAtom))
+           {
+               _SEH_LEAVE;
            }
        }
 
@@ -2472,9 +2475,10 @@
    }
    _SEH_END;
 
-   if (ucClassName != NULL && ClassName.Length == 0)
-   {
-       if (!IS_ATOM(ClassName.Buffer))
+   if (ucClassName != NULL)
+   {
+       if (ClassName.Length == 0 && ClassName.Buffer != NULL &&
+           !IS_ATOM(ClassName.Buffer))
        {
            SetLastWin32Error(ERROR_INVALID_PARAMETER);
            RETURN(NULL);