al_get_display_refresh_rate(3) al_get_display_refresh_rate(3)

al_get_display_refresh_rate - Allegro 5 API

#include <allegro5/allegro.h>
int al_get_display_refresh_rate(ALLEGRO_DISPLAY *display)

Gets the refresh rate of the display.

al_set_new_display_refresh_rate(3)

Allegro reference manual