Get the SDL_Gamepad associated with a joystick instance ID, if it has been opened.
SDL_Gamepad* SDL_GetGamepadFromInstanceID(SDL_JoystickID instance_id);
|instance_id||the joystick instance ID of the gamepad|
Returns an SDL_Gamepad on success or NULL on failure or if it hasn't been opened yet; call SDL_GetError() for more information.
This function is available since SDL 3.0.0.