[jbirer]

This is giving me GObject and Gdk flashbacks. If anyone wants to traumatize themselves, compile GTK2 and work with the aforementioned.

That being said, it's still a very clever way to implement this.

[robinsonb5]

I'm seeing reasonably clean use of function pointers without the usual tangle of opaque macros. This kind of pattern easily turns into a mess if you get too clever with it, but I quite like what I'm seeing here.

(I suspect autotools will have traumatised anyone long before they manage to get GTK2 to compile on a modern system!)