[PATCH] user32: Fix error handling in MapWindowPoints, ClientToScreen and ScreenToClient and add tests for them. (try 2)

[Alexandre Julliard]

Christian Costa <titan.costa at gmail.com> writes:

> @@ -236,20 +236,32 @@ BOOL WINAPI GetClientRect( HWND hwnd, LPRECT rect )
>  
>  
>  /*******************************************************************
> - *		ClientToScreen (USER32.@)
> + *             ClientToScreen (USER32.@)
>   */
>  BOOL WINAPI ClientToScreen( HWND hwnd, LPPOINT lppnt )
>  {
> +    if (!IsWindow( hwnd ))
> +    {
> +        SetLastError( ERROR_INVALID_WINDOW_HANDLE );
> +        return FALSE;
> +    }
> +

You should never use IsWindow(). Handles should be checked at the point
where they are used.

-- 
Alexandre Julliard
julliard at winehq.org