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request_refresh_rate(3)         Allegro manual         request_refresh_rate(3)


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(3), get_refresh_rate(3)

Allegro                          version 4.4.2         request_refresh_rate(3)

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