just a comment:
what about anygui.sf.net
seems that it is more cross-platform NOW
Exerpt from the anygui platforms (backends) page:
W Bethon (BeOS native)
W Java Swing
W PythonWin/win32all
W PyGTK
W Tkinter
W wxPython
W PyQt
W Curses
W Plain Text
P Dynamic HTML
P PyFLTK
P = Planned, W = Working
Just my 0.02
Bye,
Pabs