A Blocking Window
I have a window which is in full screen mode by default. Now, how can I make that window to block everything, that is the user just see that screen and is prevented from doing anything no matter what key combinations he may do?
You making a virus of some sort?! :D
You can grab mouse and keyboard and reactivate your application once it lost focus, but that's it.
For everything else you will need platform-specfic code, most probably in terms of a low-level key grabber to prevent global shortcuts. In addition, you might want to set your application as the shell (instead of explorer.exe). The keyword you are looking for is 'kiosk mode'.
No raaghuu, I am trying to making something more or less like cyber software.