Vlad-

>Finally, I see no reason to make a copy of class either way. Why not make a new class based on the old class, but just override the functionality using pure OOP? to override certain event functionality at all, in the new class just put '*' in the code window (comment).

Personally, when I'm debugging, I simplify rather than complicate. Further subclassing a buggy control doesn't seem like a very efficient path to finding the bug. JMO.