ALLEGRO_MENU - Allegro 5 API

       An  opaque  data  type  that  represents  a  menu  that  contains menu items.  Each of the menu items may
       optionally include a sub-menu.

Allegro reference manual                                                                   ALLEGRO_MENU(3alleg5)

       ALLEGRO_MENU - Allegro 5 API

              #include <allegro5/allegro_native_dialog.h>

              typedef struct ALLEGRO_MENU ALLEGRO_MENU;