More geeking...

I'm looking at writing some simple cross-platform GUI stuff, probably in C. Well, probably in C++ since all the decent cross-platform GUI libraries seem to require it.

Other than FLTK (which looks pretty good) and GTK+ (which sorta works on Windows, but it's not clear how well), anybody got any recommendations for a toolkit that will do (at a minimum) Linux and most common Windows flavors?