Creates a new gtk.MenuItem
If label is non-NULL it is used to set the "label" attribute of the new item.
If detailed_action is non-NULL it is used to set the "action" and possibly the "target" attribute of the new item. See Menu.itemSetDetailedAction for more information.
the section label, or NULL
the detailed action string, or NULL
a new gtk.MenuItem
ConstructionException GTK+ fails to create the object.
2.32
Creates a new gtk.MenuItem
If label is non-NULL it is used to set the "label" attribute of the new item.
If detailed_action is non-NULL it is used to set the "action" and possibly the "target" attribute of the new item. See Menu.itemSetDetailedAction for more information.