https://rein.kr/posts/2008-02-01-c%EC%9D%84-%EC%9C%84%ED%95%9C-ms-vc%ED%99%95%EC%9E%A5-%ED%82%A4%EC%9B%8C%EB%93%9C-%EB%AA%87-%EA%B0%80%EC%A7%80/