Get the USB product ID of a gamepad, if available.
Defined in <SDL3/SDL_gamepad.h>
instance_id | the joystick instance ID |
Returns the USB product ID of the selected gamepad. If called on an invalid index, this function returns zero
This can be called before any gamepads are opened. If the product ID isn't available this function returns 0.
This function is available since SDL 3.0.0.