Here come the pictures:

This is a resizer grip widget:

This is an ellipsis widget:

This is the stack/flow layout manager in action. The four buttons are in the same GtkHBox, but they wrap to the following line:

I spent the last couple of weekends hacking with GTK+ making some custom widgets. The idea is that after 3.1 is out I would like to work on a nice (and innovative) GUI for GNU Smalltalk, and I wanted to get up to speed with GTK+.

I made quite a few widgets (I'm at 6 classes right now). All of them are interesting things on their own, even though each of them has at least 50% of the code copied from somewhere else. I published them in a git repository at http://www.inf.unisi.ch/phd/bonzini/webdav/gtk-widgets.git (expect rebasing on all branches but master).