Creates a new #GtkMenuBar and populates it with menu items
and submenus according to model.
The created menu items are connected to actions found in the
#GtkApplicationWindow to which the menu bar belongs - typically
by means of being contained within the #GtkApplicationWindows
widget hierarchy.
Creates a new #GtkMenuBar and populates it with menu items and submenus according to model.
The created menu items are connected to actions found in the #GtkApplicationWindow to which the menu bar belongs - typically by means of being contained within the #GtkApplicationWindows widget hierarchy.