Golang C.SDL_JoystickNumBalls类(方法)实例源码

// Get the number of trackballs on a Joystick trackballs have only
// relative motion events associated with them and their state cannot
// be polled.
func (joystick *Joystick) NumBalls() int {
	return int(C.SDL_JoystickNumBalls(joystick.cJoystick))
}

func (joystick *Joystick) NumBalls() int {
	_joystick := (*C.SDL_Joystick)(joystick)
	return (int)(C.SDL_JoystickNumBalls(_joystick))
}

func (j *Joystick) NumBalls() int {
	return int(C.SDL_JoystickNumBalls((*C.SDL_Joystick)(unsafe.Pointer(j))))
}

// Joystick (https://wiki.libsdl.org/SDL_JoystickNumBalls)
func (joy *Joystick) NumBalls() int {
	return (int)(C.SDL_JoystickNumBalls(joy.cptr()))
}

// Get the number of trackballs on a joystick
// Joystick trackballs have only relative motion events associated
// with them and their state cannot be polled.
func JoystickNumBalls(joystick *C.SDL_Joystick) int {
	return int(C.SDL_JoystickNumBalls(joystick))
}