m_ipaddress = (unsigned long)MAKEIPADDRESS(IpAddress0, IpAddress1, IpAddress2, IpAddress3);
m_ipaddress = (unsigned long)MAKEIPADDRESS(IpAddress3, IpAddress2, IpAddress1,IpAddress0 );
192.168.17.46
记住网络是小端格式所以 m_ipaddress = (unsigned long)MAKEIPADDRESS(192, 168, 17, 46);是错的