Function sdl2_sys::SDL_JoystickGetBall

source ยท 
pub unsafe extern "C" fn SDL_JoystickGetBall(
    joystick: *mut SDL_Joystick,
    ball: c_int,
    dx: *mut c_int,
    dy: *mut c_int,
) -> c_int
Expand description

Get the ball axis change since the last poll.

\return 0, or -1 if you passed it invalid parameters.

The ball indices start at index 0.