Removes the given handler for the "OnDrawItem" event. If there are duplicate entries, ALL are removed.
[Visual Basic] Public Sub RemoveOnDrawItem( _ ByVal handler As DrawItemEventHandler _ ) [C#] public void RemoveOnDrawItem( DrawItemEventHandler handler ); [C++] public: void RemoveOnDrawItem( DrawItemEventHandler* handler ); [JScript] public function RemoveOnDrawItem( handler : DrawItemEventHandler );