What would be the best GUI lib to use so that I could get cross-platform functionality?
Basically, I have a lot of time at work I can be working on programs and they use NT. So, I'd love to have a simple window that would work in Linux and NT.
maybe have a look at the QT library from Trolltech (http://www.trolltech.com). The documentation is very good and it's free (for non-commercial stuff)
It's really coming down to Gtkmm or wxWindows. Qt does look nice, but I don't want to have to re-learn something else if I decide to sell the software.