Window's becoming active.

["Shane Miller" <SMiller1 stvgb org>]

Greetings,

When a window is selected that's behind other windows, what signal is emmitted?

For example, if you click on a gtkwindow that's behind another window, what signal says that the window was 
activated?  I've looked at activate, grab-focus and a few others but they don't seem to be the ones.

Thanks
Shane