sdlJoystickNumBalls function

int sdlJoystickNumBalls(
  1. 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 a negative error code on failure; call SDL_GetError() for more information.

\since This function is available since SDL 2.0.0.

\sa SDL_JoystickGetBall

extern DECLSPEC int SDLCALL SDL_JoystickNumBalls(SDL_Joystick *joystick)

Implementation

int sdlJoystickNumBalls(Pointer<SdlJoystick> joystick) {
  final sdlJoystickNumBallsLookupFunction = libSdl2.lookupFunction<
      Int32 Function(Pointer<SdlJoystick> joystick),
      int Function(Pointer<SdlJoystick> joystick)>('SDL_JoystickNumBalls');
  return sdlJoystickNumBallsLookupFunction(joystick);
}