ALLEGRO_HAPTIC_EFFECT_ID - Allegro 5 API

       This  struct  is used as a handle to control playback of a haptic effect and should be considered opaque.
       Its implementation is visible merely to allow allocation by the users of the Allegro library.

       ALLEGRO_HAPTIC_EFFECT_ID - 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                                                       ALLEGRO_HAPTIC_EFFECT_ID(3alleg5)

              #include <allegro5/allegro.h>

              typedef struct ALLEGRO_HAPTIC_EFFECT_ID ALLEGRO_HAPTIC_EFFECT_ID;