I'm working on an application which contains images which are valuable for my boss,I should somehow prevent the users from screen-capturing .I noticed that in windows media player ,while using overlays,if we capture the screen ,the panel which shows the movie becomes blank(special color-RGB(16,0,16)).So,I decided to work on overlays but didn't achieved anything yet.
Is overlaying possible in traditional windows forms Is it possible for images If so,how Has it anything to do with directx or openGL Is there exists a better way for preventing screen captures
I'd be very thankful if you help me !

how to protect screen from capturing