>How do you and others think FOX compares to 
wxWindows? One drawback
>(although not for me) seems to be lack of Mac 
support (which is claimed to
>be not too difficult to do, but unlikely soon 
without a hardware donation).

This finally reminded me of what else a 
"framework" gives you beyond what a "library" 
offers. wx, a framework, includes classes for 
documents and views (in addition to the low-level 
stuff we don't need like strings and dates). FOX 
is purely focused on widgets. 

There is an excellent (but outdated and biased) 
comparison of various GUI packages (open source 
and commercial) at:
www.newplanetsoftware.com/jx/other_toolkits.html

The author of JX (which is not appropriate for us 
due to licensing, I think) gives his views on 
various other packages, including wx, FOX, FLTK, 
Gtk--, and Qt. Take it all with a grain of salt, 
but I found it very helpful to give clues of what 
to look for.

Kevin