https://blog.faceutil.com/2017/10/11/vb6ko-dll-%ec%97%90%eb%9f%ac%eb%82%a0%eb%95%8c-%ed%8c%8c%ec%9d%bc-%eb%8b%a4%ec%9a%b4%eb%b0%9b%ec%95%84%ec%84%9c-%ec%98%a4%eb%a5%98-%ed%95%b4%ea%b2%b0%ed%95%98%ea%b8%b0-%e3%8e%a7/