Convenience function for prepending a submenu menu item to the start of menu. Combine g_menu_item_new_submenu() and g_menu_insert_item() for a more flexible alternative. Since 2.32
the section label, or NULL. [allow-none]
a GMenuModel with the items of the submenu
See Implementation
Convenience function for prepending a submenu menu item to the start of menu. Combine g_menu_item_new_submenu() and g_menu_insert_item() for a more flexible alternative. Since 2.32