al_get_joystick_active - Man Page

#include <allegro5/allegro.h>

bool al_get_joystick_active(ALLEGRO_JOYSTICK *joy)

Return if the joystick handle is “active”, i.e. in the current configuration, the handle represents some physical device plugged into the system. al_get_joystick(3) returns active handles. After reconfiguration, active handles may become inactive, and vice versa.

al_reconfigure_joysticks(3)

al_get_joystick(3), al_get_num_joysticks(3).