本文实例采用vc6.0运行环境，通过实例实现获得MAC地址的功能。
完整的实例代码如下：
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#include "stdafx.h"
#include <stdio.h>
#include <stdlib.h>
#include <httpext.h>
#include <windef.h>
#include <Nb30.h>
int getMAC(char * mac)
{
NCB ncb;
typedef struct _ASTAT_
{
ADAPTER_STATUS adapt;
NAME_BUFFER NameBuff [30];
}ASTAT, * PASTAT;
ASTAT Adapter;
typedef struct _LANA_ENUM
{ // le
UCHAR length;
UCHAR lana[MAX_LANA];
}LANA_ENUM ;
LANA_ENUM lana_enum;
UCHAR uRetCode;
memset(&ncb, 0, sizeof(ncb));
memset(&lana_enum, 0, sizeof(lana_enum));
ncb.ncb_command = NCBENUM;
ncb.ncb_buffer = (unsigned char *)&lana_enum;
ncb.ncb_length = sizeof(LANA_ENUM);
uRetCode = Netbios(&ncb);
if(uRetCode != NRC_GOODRET)
return uRetCode;
for(int lana=0; lana<lana_enum.length; lana++)
{
ncb.ncb_command = NCBRESET;
ncb.ncb_lana_num = lana_enum.lana[lana];
uRetCode = Netbios(&ncb);
if(uRetCode == NRC_GOODRET)
break;
}
if(uRetCode != NRC_GOODRET)
return uRetCode;
memset(&ncb, 0, sizeof(ncb));
ncb.ncb_command = NCBASTAT;
ncb.ncb_lana_num = lana_enum.lana[0];
strcpy((char*)ncb.ncb_callname, "*");
ncb.ncb_buffer = (unsigned char *)&Adapter;
ncb.ncb_length = sizeof(Adapter);
uRetCode = Netbios(&ncb);
if(uRetCode != NRC_GOODRET)
return uRetCode;
sprintf(mac,"%02X-%02X-%02X-%02X-%02X-%02X",
Adapter.adapt.adapter_address[0],
Adapter.adapt.adapter_address[1],
Adapter.adapt.adapter_address[2],
Adapter.adapt.adapter_address[3],
Adapter.adapt.adapter_address[4],
Adapter.adapt.adapter_address[5]
);
return 0;
}
int main(int argc, char* argv[])
{
char mac[200];
getMAC(mac);
printf(" mac : %s \n",mac);
return 0;
}
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另外还需要注意：必须在project->Setting里添加库文件“netapi32.lib”。