Thanks alot for your replies, mates !

Hi everyone ! Well, I have heard that the MFC runtime used a hook to dynamically link a component to its window procedure. I know that it's the best way to do it, but Microsoft itself advises the developers to use hooks in their applications only for debugging purposes, because it dramatically slows the programs down... What about MFC programs, are they much slower than their raw API equivalents ? Thanks in advance, Mark