How do I detect what software is using the webcam on a Windows box (XP,Vista,7)

Question

The idea is that I want to build a small app that detects if the webcam is being used and by what.

I have thought about seeing who has use of the Twain.dll somehow (like the way process explorer knows)

It's for a security style app that picks out weird webcam behaviour.

Ideally I would use C# as it's my strong point, but I'm guessing it won't be that nice.

Answer 1

This may help you.

http://stackoverflow.com/questions/233455/webcam-usage-in-c