allegro_test.c

#include <allegro5/allegro.h>

int main(int argc, char **argv)
{
    al_init();
    ALLEGRO_DISPLAY *display = al_create_display(640, 480);
    ALLEGRO_EVENT_QUEUE *queue = al_create_event_queue();
    
    al_register_event_source(queue, al_get_display_event_source(display));
    
    ALLEGRO_EVENT event;
    while (1) {
        al_wait_for_event(queue, &event);
        if (event.type == ALLEGRO_EVENT_DISPLAY_CLOSE)
            break;
    }
    return 0;
}