How do I trap windows key, alt+tab, ctrl+alt+delete in C#?

Question

How do I trap Windows key, Alt+Tab, and Ctrl+Alt+Delete in a Windows application using C#?

Answer 1

As Jan stated, you can't capture CTRL-ALT-DEL without writing your own GINA.

For the Windows or ALT-TAB keys, you can look at these for help:

Capturing Keystrokes without Focus (SO near-duplicate)

How To Set A Windows Hook

Hooks (low-level, but will explain what you need for the P/Invoke)