获得本地计算机的IP地址

 WORD wVersion;
 WSADATA wsaData;
 char name[255];
 CString ip;
 PHOSTENT host;
 wVersion = MAKEWORD (2, 0);
 if( WSAStartup (wVersion, &wsaData) == 0 )  //打开winsock库
 {
  if( gethostname (name, sizeof(name)) == 0 )    // 获得主机名
  {
   if((host = gethostbyname (name) ) != NULL )  //获得主机信息
   {
    ip = inet_ntoa (*(in_addr*)*host->h_addr_list);  //获得主机IP
    MessageBox(ip);
   }
  }
  WSACleanup();               //关闭winsock库
 }

 

需要 winsock2.h 和 WS2_32.lib