Creates a new #GtkMenuToolButton using @icon_widget as icon and @label as label.
a widget that will be used as icon widget, or %NULL
a string that will be used as label, or %NULL
Return: the new #GtkMenuToolButton
ConstructionException GTK+ fails to create the object.
2.6
See Implementation
Creates a new #GtkMenuToolButton using @icon_widget as icon and @label as label.