Provided by: allegro5-doc_5.2.11.0+dfsg-1_all 

NAME
al_get_joystick_guid - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro.h>
ALLEGRO_JOYSTICK_GUID al_get_joystick_guid(ALLEGRO_JOYSTICK *joy)
DESCRIPTION
Returns the joystick GUID, that can be used to distinguish joysticks hardware. Despite the name, these
do not need to be actually unique to do the limitations of the system that computes them. This can be
all zeros when unknown.
SINCE
5.2.11
SEE ALSO
ALLEGRO_JOYSTICK_GUID(3alleg5)
[Unstable API]: New API.
Allegro reference manual al_get_joystick_guid(3alleg5)