I worked some on the second exercise problem in the second chapter of the GTK book. It asks to rewrite the first exercise using only property get/set functions as defined by GObject instead of canned functions for doing the same thing. The other part is learning how to use "notify" events. "notify" lets you monitor the state of things and connect callback functions to state changes. So in the example you're changing the title of the window but you've also got something monitoring the window title that happens if the title changes.

Bleh, can't write coherently after midnight. Waiting on Ana to get home.