init_menu (3) - Linux Manuals
init_menu: Low level initialisation of a menu. Allegro game programming library.
NAME
init_menu - Low level initialisation of a menu. Allegro game programming library.SYNOPSIS
#include <allegro.h>
MENU_PLAYER *init_menu(MENU *menu, int x, int y);
DESCRIPTION
This function provides lower level access to the same functionality as do_menu(), but allows you to combine a popup menu with your own program control structures. It initialises a menu, returning a pointer to a menu player object that can be used with update_menu() and shutdown_menu(). With these functions, you could implement your own version of do_menu() with the lines:
MENU_PLAYER *player = init_menu(menu, x, y); while (update_menu(player)) ; return shutdown_menu(player);