VC获取本机MAC地址

//获取硬盘ID信息及网卡MAC地址的代码
#include "stdafx.h"
#include <atlbase.h>
#include <atlconv.h>
#include "iphlpapi.h"
#pragma comment ( lib, "Iphlpapi.lib" )

 BOOLEAN getActiveMac( char* sMac )
{ 
 BOOLEAN bRtn = FALSE;

 PIP_ADAPTER_INFO pAdapterInfo;
 PIP_ADAPTER_INFO pAdapter = NULL;
 DWORD dwRetVal = 0;

 pAdapterInfo = (IP_ADAPTER_INFO *) malloc( sizeof(IP_ADAPTER_INFO) );
 ULONG ulOutBufLen = sizeof(IP_ADAPTER_INFO);

 if (GetAdaptersInfo( pAdapterInfo, &ulOutBufLen) != ERROR_SUCCESS)
 {
  free (pAdapterInfo);
  pAdapterInfo = (IP_ADAPTER_INFO *) malloc (ulOutBufLen);
 }

 if ((dwRetVal = GetAdaptersInfo( pAdapterInfo, &ulOutBufLen)) == NO_ERROR)
 {
  pAdapter = pAdapterInfo;
  char szMac[20] = {0};
  char szAddress[4] = {0};
  while (pAdapter)
  { 
   
   if ( strcmp( pAdapter->IpAddressList.IpAddress.String ,"0.0.0.0" ) != 0 )
   {
    for (UINT i = 0; i < pAdapter->AddressLength; i++)
    { 
     sprintf_s( szAddress , "%02X", pAdapter->Address[i] );
     strcat_s( szMac , szAddress );
     if( i != pAdapter->AddressLength - 1 )
     {
      strcat_s( szMac , "-" );
     }
    }
    break;
   }
   pAdapter = pAdapter->Next;
  }

  memcpy( sMac , szMac , strlen( szMac ) );

 }
 else
 {
  printf("Call to GetAdaptersInfo failed.\n");
 }

 return bRtn;
}

  
 int main(int argc, char* argv[])
 {
  
  char sMac[20] = {0};
  getActiveMac( sMac );
  printf( "%s" , sMac );

  return 0;
 }