How to get quick access to the pixels on the screen in Windows?

Question

3D

You will need to do a course on computer graphics. All algorithms will have to be implemented by handles, that is, you can use only one external function - pixel settings.
Question: how to get quick access to the pixels on the screen in Windows?

Answer 1

In WinAPI, you can access various GDI contexts, including the context for displaying the entire screen.
MSDN to the rescue.

Answer 2

there is no such function, if the task "you can use only one external function - pixel settings" was given to you by a teacher, then he either did not develop further from the 60s, or does not understand at all what graphics programming is and any of your projects will be so complicated for him that he does not understand how everything works there. Therefore, just take what lies better and implement your own algorithms, drawing and contexts should not bother you at all.