gtk.MenuBar — a widget that displays gtk.MenuItem widgets horizontally
| +-- gobject.GObject +-- gtk.Object +-- gtk.Widget +-- gtk.Container +-- gtk.MenuShell +-- gtk.MenuBar | 
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The gtk.MenuBar is a subclass of gtk.MenuShell which contains one or more gtk.MenuItem widgets. A gtk.MenuBar displays the menu items horizontally in an application window or dialog.