debian man page for get_gfx_mode

get_gfx_mode(3alleg4)						  Allegro manual					     get_gfx_mode(3alleg4)

NAME
       get_gfx_mode - Returns the id of the current graphics driver. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       int get_gfx_mode();

DESCRIPTION
       This  function  will  let  you  determine  which  graphics driver is currently set by allegro. If no graphics driver is set, it will return
       GFX_NONE.

RETURN VALUE
       Returns the id of the current graphics driver if there is one, or GFX_NONE if none is set.

SEE ALSO
       set_gfx_mode(3alleg4), is_windowed_mode(3alleg4)

Allegro 							   version 4.4.2					     get_gfx_mode(3alleg4)