How to determine if the current Windows session is locked or not?

Question

I have an application which runs every hour on a Windows XP Machine. To run properly, this application requires the current session to be unlocked. So I was wondering if there a way to know if the current Windows session is locked or not with C# and .NET 3.5.

UPDATE: The application cannot listen to the SessionNotification events. The application can be kicked off anytime and terminates when completed.

Thanks!

Answer 1

These are untested by me, but look interesting. I'd give them a test, but my Visual Studio appears to be less than happy with me at the moment.

• Is there any way a program can know whether or not the computer is locked? (google cache link, thanks @hometoast) (link permanently dead)
• Lots of information in this thread
• If your app can run all the time and "wake up" once an hour, the SystemEvents.SessionSwitch event might help you out, there's an example in the thread above