sdlGetNumJoystickBalls function joystick

int sdlGetNumJoystickBalls(Pointer<SdlJoystick> joystick)

Get the number of trackballs on a joystick.

Joystick trackballs have only relative motion events associated with them and their state cannot be polled.

Most joysticks do not have trackballs.

\param joystick an SDL_Joystick structure containing joystick information. \returns the number of trackballs on success or -1 on failure; call SDL_GetError() for more information.

\threadsafety It is safe to call this function from any thread.

\since This function is available since SDL 3.2.0.

\sa SDL_GetJoystickBall \sa SDL_GetNumJoystickAxes \sa SDL_GetNumJoystickButtons \sa SDL_GetNumJoystickHats

extern SDL_DECLSPEC int SDLCALL SDL_GetNumJoystickBalls(SDL_Joystick *joystick)

Implementation

int sdlGetNumJoystickBalls(Pointer<SdlJoystick> joystick) {
  final sdlGetNumJoystickBallsLookupFunction = _libSdl
      .lookupFunction<
        Int32 Function(Pointer<SdlJoystick> joystick),
        int Function(Pointer<SdlJoystick> joystick)
      >('SDL_GetNumJoystickBalls');
  return sdlGetNumJoystickBallsLookupFunction(joystick);
}