Get the implementation-dependent GUID of a joystick.
This can be called before any joysticks are opened.
The joystick instance ID.
The GUID of the selected joystick. If called with an invalid instance_id, this function returns a zero GUID.
SDL_GetJoystickGUID SDL_GUIDToString
See Implementation
Get the implementation-dependent GUID of a joystick.
This can be called before any joysticks are opened.