(14-05-2020, 08:08 PM)phillbush Wrote: What are Xlib pixmaps used for if I can draw directly on windows?

I go into some good explaining of this in this article.

In sum, windows and pixmap are instances of something more abstract called a drawable. The difference is that a window is something on the screen already while a pixmap only lives in a memory buffer. You can then apply the pixmap pixels over some other drawables.