I trying to write a Windows Service that needs to periodically query locations on the screen and give an RGB value for the color of the pixel. I am using gdi32 with the GetPixel call and cannot get it to work properly within the Service. It works just fine when I call it from a WinForm developed for testing. Does the Service not have access to anything on the desktop? It always returns me a value of FFFFFFFF regardless of the actual pixel color. Is there any work around here or must I can the Service.

Thanks.

Rick Grinter