>For some background, I'm working at a small company which is currently
>using Tcl/Tk to create the UI for a 3D graphics app (human simulation) on
>both Unix and Windows.  In addition to being fairly portable and
>supporting Windows/Motif/Mac look 'n' feel, Tcl/Tk is also free (as is
>Perl/Tk and Python/Tk), which is part of why we chose to use it.

According to what I read on the Python GUI-SIG, the Mac version of Tk is
seriously crippled.  Callbacks don't work appropriately, and the widgets
have a memory leak.  That makes a Squeak/Tk port pretty unappealing.

Mark

--------------------------
Mark Guzdial : Georgia Tech : College of Computing : Atlanta, GA 30332-0280
(404) 894-5618 : Fax (404) 894-0673 : guzdial at cc.gatech.edu
http://www.cc.gatech.edu/gvu/people/Faculty/Mark.Guzdial.html