Is it possible to put a combo box on a matplotlib figure?

I have a matplotlib figure (by the way - matplot lib is

    > brilliant) with lots of widgets (buttons, check boxes) on
    > it, and am wondering if it is possible to put a combo box
    > on it?

There are GUI native widgets you can use (eg GTK or WX) if you are
doing GUI programming. matplotlib has a few simple GUI neutral
widgets in matplotlib.widgets, but not compo boxes. We could write
one...., but then someone would yell.