ah i see.
Well, i dont know -- it should have the majority of them shouldnt it? At least as much as win32 native widgets, though i could be mistaken. The reason i would like to try X11 is because it's probably going to run a hell of a lot faster than GTK, which is known to be sluggish.
I have wxGTK -- i just wanted to try X11 for the aforementioned reasons.