al_get_haptic_from_display - Allegro 5 API

       If  the  display has haptic capabilities, returns the associated haptic device handle.  Otherwise returns
       NULL.

       al_get_haptic_from_display - Allegro 5 API

       5.1.8

              [UnstableAPI]: 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_get_haptic_from_display(3alleg5)

              #include <allegro5/allegro.h>

              ALLEGRO_HAPTIC *al_get_haptic_from_display(ALLEGRO_DISPLAY *dev)