The index passed as an argument refers to the N'th haptic device on this
system.
When opening a haptic device, its gain will be set to maximum and
autocenter will be disabled. To modify these values use SDL_SetHapticGain()
and SDL_SetHapticAutocenter().
\param instance_id the haptic device instance ID.
\returns the device identifier or NULL on failure; call SDL_GetError() for
more information.
\since This function is available since SDL 3.2.0.
Open a haptic device for use.
The index passed as an argument refers to the N'th haptic device on this system.
When opening a haptic device, its gain will be set to maximum and autocenter will be disabled. To modify these values use SDL_SetHapticGain() and SDL_SetHapticAutocenter().
\param instance_id the haptic device instance ID. \returns the device identifier or NULL on failure; call SDL_GetError() for more information.
\since This function is available since SDL 3.2.0.
\sa SDL_CloseHaptic \sa SDL_GetHaptics \sa SDL_OpenHapticFromJoystick \sa SDL_OpenHapticFromMouse \sa SDL_SetHapticAutocenter \sa SDL_SetHapticGain