al_get_monitor_refresh_rate - Man Page
Allegro 5 API
Synopsis
#include <allegro5/allegro.h> int al_get_monitor_refresh_rate(int adapter)
Description
Returns the current refresh rate of a monitor attached to the display adapter.
Since
5.2.6
[Unstable API]: This is an experimental feature and currently only works on Windows.
See Also
Info
Allegro reference manual