DOKK / manpages / debian 11 / allegro5-doc / al_set_new_display_refresh_rate.3alleg5.en
al_set_new_display_refresh_rate(3alleg5) al_set_new_display_refresh_rate(3alleg5)

al_set_new_display_refresh_rate - Allegro 5 API

#include <allegro5/allegro.h>
void al_set_new_display_refresh_rate(int refresh_rate)
    

Sets the refresh rate to use when creating new displays on the calling thread. If the refresh rate is not available, al_create_display(3alleg5) will fail. A list of modes with refresh rates can be found with al_get_num_display_modes(3alleg5) and al_get_display_mode(3alleg5).

The default setting is zero (don’t care).

al_get_new_display_refresh_rate(3alleg5)

Allegro reference manual