Get the implementation-dependent GUID of a joystick.
SDL_JoystickGUID SDL_GetJoystickInstanceGUID(SDL_JoystickID instance_id);
|the joystick instance ID
Returns the GUID of the selected joystick. If called on an invalid index, this function returns a zero GUID
This can be called before any joysticks are opened.
This function is available since SDL 3.0.0.