Enabling shortcut keys when program does not have focus

Hi

Does anyone know of a way of defining shortcut keys which will work even if the program does not have focus?

I am trying to write a C++ program which takes a screen capture of another program. When I press a button I want my C++ program to take a screen capture even though the program I am capturing has the focus.

Cheers

Robbie

KeyBoard Hooks - CodeProject Article.
Manipulating Windows using messages and simple CBT hooking- CodeProject Article.
Override Windows Creation Parameters with a Win32 Service - CodeProject Article.

Thanks

No need for any type of hooking to do this.
Just use RegisterHotKey.