Gijs wrote:In the meantime I started myself in Qt and wow, I got something already! TerraGear functions work, now I need to make the whole GUI work correctly
I'll keep you up to date.
Qt is just the library/toolkit (written in C++) - there are bindings available for many different languages. What programming language do you use?
Python is probably one of the easier ones to get started. But if this is just about providing a GUI frontend to a console program, using something like EasyGUI or vtcl should be fairly easy to get started, even for non programmers. EasyGUI is in fact based on Python: http://www.ferg.org/easygui/tutorial.html
If you already have a GUI definition file created using Qt designer, Python would still be a feasible option.