Thanks toxcct, so it is the screenshot method like ben^ mentioned? I have discussed with my college before and thought about the screen shot method, but I thought since the shutdown window does it, and the cardspace window does it, there might be a API built in to do it... Seems not so... ;P Anyway, thanks for your help.

Oh, plus it's something interesting that I've always wondered about... I have thought about the screen shot method, but I thought since the shutdown window does it, and the cardspace window does it, there might be a API built in to do it... ;P

Our business is working on a surveillance system and the interface basically takes over the entire screen. Sometimes we would like to grab user's attention / prevent user from any further interaction.

I'm sorry if I made you feel that way. I'm new to the forum. Maybe I should put more explanation of what I have thought of...

This could be a way to do it. Plus disabling system keys? the Windows key doesn't work when shutdown dialog open. With windows cardspace, alt-tab wouldn't work either. I guest it disabled those too... The reason I post this is that I thought there is a more convenient way to do it like a system API or something...

Explaination please.

You know, in XP, when you go Start->Turn Off Computer, the Turn Off Computer window will appear and the rest of the screen turns grey and not responding to user interaction. Same happens for window card space. Is there any way to do that in C++/C#?

I am using Ghost Installer. It's quite easy to use. Probably not as powerful as IS, but matches our needs.