Game controller touchpad event structure (event.ctouchpad.*)
Defined in SDL_events.h
typedef struct SDL_ControllerTouchpadEvent
{/**< SDL_CONTROLLERTOUCHPADDOWN or SDL_CONTROLLERTOUCHPADMOTION or SDL_CONTROLLERTOUCHPADUP */
Uint32 type; /**< In milliseconds, populated using SDL_GetTicks() */
Uint32 timestamp; /**< The joystick instance id */
SDL_JoystickID which; /**< The index of the touchpad */
Sint32 touchpad; /**< The index of the finger on the touchpad */
Sint32 finger; float x; /**< Normalized in the range 0...1 with 0 being on the left */
float y; /**< Normalized in the range 0...1 with 0 being at the top */
float pressure; /**< Normalized in the range 0...1 */
} SDL_ControllerTouchpadEvent;