GObject.Object
GObject.InitiallyUnowned
Gtk.Widget
Gtk.Container
Gtk.Bin
Gtk.MenuItem
Wnck.ImageMenuItem
Gtk.MenuShell
Gtk.Menu
Wnck.ActionMenu
Gtk.MenuBar
Wnck.Selector
Wnck.Tasklist
Wnck.Pager
Wnck.Application
Wnck.ClassGroup
Wnck.Handle
Wnck.Screen
Wnck.Window
Wnck.Workspace