Version: (using KDE 3.5.9) Installed from: Gentoo Packages OS: Linux Well, maybe there IS something like that and i don't know about it but there's a need for minimizing programs when they are in fullscreen mode. Some built-in hotkey? It's possible that it would need to automatically change screen sizes when minimizing fullsreen app. I'm using 1024x768 and i run games on 800x600. Alt+Tab shows bigger program changer than in situation without game ran.
Such applications presumably take full control of the keyboard and as such KDE cannot interfere. You need to ask X developers or there are helper utilities to run such applications in a separate X session.