Provided by: allegro5-doc_5.2.3.0-1_all 

NAME
al_is_haptic_active - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro.h>
bool al_is_haptic_active(ALLEGRO_HAPTIC *hap)
DESCRIPTION
Returns true if the haptic device can currently be used, false if not.
SINCE
5.1.8
[Unstable API]: Perhaps could be simplified due to limited support for all the exposed features
across all of the platforms. Awaiting feedback from users.
Allegro reference manual al_is_haptic_active(3alleg5)