Function sdl2_sys::SDL_GameControllerOpen

pub unsafe extern "C" fn SDL_GameControllerOpen(
    joystick_index: c_int,
) -> *mut SDL_GameController

Open a game controller for use. The index passed as an argument refers to the N’th game controller on the system. This index is not the value which will identify this controller in future controller events. The joystick’s instance id (::SDL_JoystickID) will be used there instead.

\return A controller identifier, or NULL if an error occurred.