NAME
request_refresh_rate - Requests a specific refresh rate during graphic
mode switch. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
void request_refresh_rate(int rate);
DESCRIPTION
Requests that the next call to set_gfx_mode() try to use the specified
refresh rate, if possible. Not all drivers are able to control this at
all, and even when they can, not all rates will be possible on all
hardware, so the actual settings may differ from what you requested.
After you call set_gfx_mode(), you can use get_refresh_rate() to find
out what was actually selected. At the moment only the DOS VESA 3.0, X
DGA 2.0 and some Windows DirectX drivers support this function. The
speed is specified in Hz, eg. 60, 70. To return to the normal default
selection, pass a rate value of zero. Example:
request_refresh_rate(60);
if (set_gfx_mode(GFX_AUTODETECT, 640, 480, 0, 0) != 0)
abort_on_error("Couldn't set graphic mode!");
if (get_refresh_rate() != 60)
abort_on_error("Couldn't set refresh rate to 60Hz!");
SEE ALSO
set_gfx_mode(3alleg), get_refresh_rate(3alleg)