Elysian Shadows

I've not been able to find much info on this, maybe you guys can help me out?

The most bare bones way creating and utilizing GUI in Windows would be via the Win32 API. Or in C# and .NET languages I believe the .NET framework and CLR provides this for you?

Back on topic though, on Linux, all I can find is people suggesting pre-built libraries such as the ever-growing popular Qt.

But how is libraries like Qt utilizing it? How would I do it without a library?

Thanks, I hope that made enough sense!

Linux has "X".

Start w/ X11/Xlib.h and X11/X.h

Thank qp! Exactly what I was looking for!

XLib is the main way to go, but it should be noted that there is an alternative: XCB. I haven't used it personally, but I've heard a lot of people (or at least a few very vocal people ) saying that they prefer it over XLib.