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.