Get clicks OUTSIDE the window

[Diego Zuccato <diego otello alma unibo it>]

Hello all.

I'm facing another problem I can't see how to solve :-(
I'd need to catch mouse clicks that happen outside my app to make a
(modal) popup window disappear from the screen.
I've had a look at gtkmenu* but couldn't find the relevant bit :-( Popup
menus behaviour is just like what I'd need for my win...

I'm using Gtk+ 1.2.10.

Tks,
 Diego.