Thanks for your input. The prototype will be running on Windows only. Portability and being able to develop on other platforms would be a bonus, but is not a requirement. I guess the choice is going to be between Visual Studio and Qt. Of importance is:
1) Being able to develop and change (dummy) GUI prototypes very fast, i.e. drag and drop. I've tried Visual Studio's form designer -- it seems quite capable. Don't know about Qt's designer -- is it as easy and fast to use? 2) The Qt vs. .NET API. I have no experience with Qt's API and a rudimentary experience with the .NET API (seems powerfull but also big and complex). Michael: Interesting suggestion to just subclass C#, maybe that's the way to go. -- http://mail.python.org/mailman/listinfo/python-list