Can I prevent a user from taking screenshots in a Mac application?

Question

I have an image application and I want to release it where unregistered users can view the files but cant save until they\'ve registered.

I\'m looking for a way to p

Answer 1

DVD Player does this (the user can still take the screenshot, but the player window doesn't appear in it), so I'm sure there's a way. Maybe setting the window's sharing type to NSWindowSharingNone?