Menu.appendSubmenu
void appendSubmenu(string label, gio.menu_model.MenuModel submenu)Convenience function for appending a submenu menu item to the end of menu. Combine gio.menu_item.MenuItem.newSubmenu and gio.menu.Menu.insertItem for a more flexible alternative.
Parameters
label | the section label, or null |
submenu | a #GMenuModel with the items of the submenu |