[pygtk] Clickable MenuItem with submenu?

[Igor Mammedov]

Hi Everyone!

I've following menu structure:

Menu
  |
  Filter1 (MenuItem with submenu)
        |
        Filter2 (MenuItem)

When I click on Filter1 menu popup disappears and I app 
receives 'activate' signal.

Question is how can I get the same effect on Filter1?
 (i.e. when I click on Filter1, app shall at least close
  whole popup menu and possibly generate 'activate' signal)