well wxWindows give a better windows look an feel to the apps..
and Qt dosen't really fit to the macox aqua human interface guidelines.. it's soo window-ish..
but Qt is really no-doubt well designed.
it is a cocoa-java app. it is mac only since cocoa nib files are parsed by the quartz engine. yet you could create a pure java interface to the app as well which will run on all platforms.
actually windows users think it's better to have a central place to install and unistall everything.
the reason for this? Windows Explorer. It is the worst peice of software junk u've ever seen. No one is comfortable with it and it hurts the eye. The Finder on the other hand is __always__...
use C compile it natively and test test test test test
then use int and doubles and test test test test test
then use the interpreters but forget testing it.