读取网卡MAC地址（2）

用iphlpapi.h
TCHAR szmacaddress[6][MAX_PATH];
int count = 0;
PIP_ADAPTER_INFO pinfo=NULL;
unsigned long len=0;

void GetInfo()
{
 if (pinfo!=NULL)
  delete (pinfo);
 unsigned  long nError;
 nError = GetAdaptersInfo(pinfo,&len);
 if (nError==0)
 {
  ParseData();   
 }
 if (nError==ERROR_NO_DATA)
 {
  //AfxMessageBox("No adapter information exists for the local computer");
 }
 if (nError==ERROR_NOT_SUPPORTED)
 {
  //AfxMessageBox("GetAdaptersInfo is not supported by the operating system running on the local computer");
 }
 if (nError==ERROR_BUFFER_OVERFLOW)
 {
  pinfo= (PIP_ADAPTER_INFO)malloc(len);
  nError = GetAdaptersInfo(pinfo,&len);
  if (nError==0)
  {
   ParseData();   
  }
 }

void ParseData()
{
 count = 0;
 while (pinfo!=NULL)
 {
  sprintf(szmacaddress[count++], "%02X:%02X:%02X:%02X:%02X:%02X",pinfo->Address[0],pinfo->Address[1],pinfo->Address[2],pinfo->Address[3],pinfo->Address[4],pinfo->Address[5]);
  pinfo = pinfo->Next;
 }
}