How to catch a key in windows

Hi,
I need to activate my program if PrintScreen key is pressed and focus is on some else program.
Thank you.

GrayMatter Software
You can use windows hook to do this

http://www.codeproject.com/csharp/NetWin32Hooks.asp.

Install keyboard hook, check for printscreen key and do your stuff
Rick Frankel
Stay away from com objects. You can set up a keyevent monitor in you program, parse the input to determine the key pressed and directly call your program via a shell. The dotnet framework has all the classes you need to do this.
How to catch a key in windows