Is there an example programmed with tcltk ?

I'd like to find a complete example of a very simple (or less simple, if a small one does not exist) of an application using OC classes, but programmed with tcltk.

First i'll try to build a simple shape (sphere or cube...well I guess sphere is easier) and try to display it.

I've got a few weeks to find how hard it is to program using opencascade, and what we can do with it, then create a very simple tutorial in French telling "how to" build simply a little program using opencascade.

If you've got any information about something that could help me in particular, just tell me...i've read a bit through helps and tutorials available but I found nothing for such a OC newbie I am.