Provided by: allegro5-doc_5.2.10.1+dfsg-1build1_all 

NAME
ALLEGRO_HAPTIC_EFFECT_ID - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro.h>
typedef struct ALLEGRO_HAPTIC_EFFECT_ID ALLEGRO_HAPTIC_EFFECT_ID;
DESCRIPTION
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.
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 ALLEGRO_HAPTIC_EFFECT_ID(3alleg5)