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al_get_haptic_from_display - Allegro 5 API
#include <allegro5/allegro.h> ALLEGRO_HAPTIC *al_get_haptic_from_display(ALLEGRO_DISPLAY *dev)
If the display has haptic capabilities, returns the associated haptic device handle. Otherwise returns NULL.
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.