获得本地主机名和IP地址

 //获得本地主机名和IP地址
 WORD wVersionRequested;
 WSADATA wsaData;
 char name[255];
 CString ip;
 PHOSTENT hostinfo;
 wVersionRequested = MAKEWORD( 2, 0 );

 if ( WSAStartup( wVersionRequested, &wsaData ) == 0 )
 {

  if( gethostname ( name, sizeof(name)) == 0)
  {
   if((hostinfo = gethostbyname(name)) != NULL)
   {
    ip = inet_ntoa (*(struct in_addr *)*hostinfo->h_addr_list);
   }
  }

  WSACleanup( );
 }