Thanks for that reply. I guess, I'll just start to play around with panels a bit, to get a better idea of what I'm talking about ;-) Is your project puplic in any way, so I could take a look?

On the other hand: the idea of finally ending up re-programming a whole library of user interface functionality in the presence of ready to use UI-toolkits which could save me a lot of time (such as MFC) keeps bothering me. So I'm still wondering how easy (or not) it would be to integrate this.