title: How to get pixel in C without generating any trash
body: <p>I need to check four pixels at screen at least five times per second. Also, these pixels aren't on the application. If possible I would like a solution that doesn't use any external libraries (in another words, that uses graphics.h, windows.h or winusers.h). It's okay if the solution uses C++ libraries. I tried using GetPixel() but it generated a ridiculous amount of trash with the audiodg.exe. If you know a solution with SFML or other external libraries please answer here too.</p>