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PIP_ADAPTER_INFO pinfo=NULL;
 unsigned long len=0;

 if (pinfo!=NULL)
  delete (pinfo);
 unsigned  long nError;

 //获得本地计算机的MAC地址,第一次是取不到的,下面第2次循环才可以获取到信息
 MacInfo info;
 nError = GetAdaptersInfo(pinfo,&len);
 if (nError==0)
 {
  do
  {
   sprintf(info.MacAddress, "%02X-%02X-%02X-%02X-%02X-%02X",
    pinfo->Address[0],
    pinfo->Address[1],
    pinfo->Address[2],
    pinfo->Address[3],
    pinfo->Address[4],
    pinfo->Address[5]);
  }
  while((pinfo = pinfo->Next) != NULL);
 }

 if (nError==ERROR_BUFFER_OVERFLOW)
 {
    //pinfo包含的相关信息可以根据自己的需要取
  pinfo= (PIP_ADAPTER_INFO)malloc(len);
  nError = GetAdaptersInfo(pinfo,&len);
  if (nError==0)
  {
   do
   {  
    sprintf(info.MacAddress, "%02X-%02X-%02X-%02X-%02X-%02X",
     pinfo->Address[0],
     pinfo->Address[1],
     pinfo->Address[2],
     pinfo->Address[3],
     pinfo->Address[4],
     pinfo->Address[5]);
    sprintf(info.MacDescribe,pinfo->Description);
    sprintf(info.IPAddress,pinfo->IpAddressList.IpAddress.String);
    //这里用了成员变量来保存取到的信息
    m_vMacaddress.push_back(info);
   }
    //循环获取,很多机器都有多个网卡
   while((pinfo = pinfo->Next) != NULL);
  }
 }

 if (pinfo!=NULL)
 {
  delete (pinfo); 
 }