Function sdl2_sys::SDL_JoystickNumBalls [−] [src]

pub unsafe extern "C" fn SDL_JoystickNumBalls(
    joystick: *mut SDL_Joystick
) -> c_int

Get the number of trackballs on a joystick.

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

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