Lothar Scholz wrote:

>Inheritance just for the purpose to add callbacks/configuration
>already proved to be wrong a long time ago. The only framework which
>tried this was self, but as self is OO without classes it's not
>comparable.
>  
>
wxWindows (now wxWidgets, I'm told) does this, and made programming 
windows in C++ oodles easier for me. But that's neither here nor there. :)

Devin