[pygtk] widget_push_composite_child

[Jeffrey Barish]

I understand that I can add composite children to a widget by creating them
between widget_push_composite_child and widget_pop_composite_child calls.

gtk.widget_push_composite_child()
widget1 = gtk.Widget1()
widget2 = gtk.Widget2()
gtk.widget_pop_composite_child()
widget1.set_parent(main_widget)
widget2.set_parent(main_widget)

Aside from the difference between foreach and forall, is this code otherwise
equivalent to

widget1 = gtk.Widget1()
widget2 = gtk.Widget2()
main_widget.add(widget1)
main_widget.add(widget2)

I ask this question because I am trying to understand exactly what is meant
by "composite children".
-- 
Jeffrey Barish