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C++/Javascript help

No.716015 ViewReplyOriginalReport
Can someone tell me how I can access the rgb value of a specific pixel/pixels on the desktop screen using a programming language? I searched online and all the answers I get point to bitmaps, but I just want to know if a specific pixel/region on the screen changes colors over a period of time; I don't want to create a new image/ bitmap every second then examine that image. Isn't there a system or graphic module that I can import to do this?