用GetAdaptersInfo()获取本机的MAC地址

演示代码如下：

#pragma comment(lib,"Iphlpapi.lib")
#include <atlbase.h>
#include <atlconv.h>
#include <iphlpapi.h>

int main()
{
	DWORD dwRetVal = 0;
	IP_ADAPTER_INFO adapterInfo ={0};
	IP_ADAPTER_INFO *pAdapter = NULL;
	ULONG ulOutBufLen = sizeof(adapterInfo);
	dwRetVal = GetAdaptersInfo(&adapterInfo, &ulOutBufLen);
	if(dwRetVal == NO_ERROR)
	{
		pAdapter = &adapterInfo;
		printf("AdapterName:%s\n",pAdapter->AdapterName);
		printf("AdapterDesc:%s\n",pAdapter->Description);
		printf("AdapterAddr:");
		for(UINT i=0;i<pAdapter->AddressLength;i++)
		{
			printf("%02X%c", pAdapter->Address[i],
				i == pAdapter->AddressLength-1 ? '\n' : '-');
		}
		printf("AdapterType:%d\n",pAdapter->Type);
		printf("IPAddress:%s\n",pAdapter->IpAddressList.IpAddress.String);
		printf("IPMask:%s\n",pAdapter->IpAddressList.IpMask.String);
	}
	else
	{
		printf("GetAdaptersInfo() failed.");
	}
	return 0;
}

测试运行结果如下：
AdapterName:{08D07467-7622-4C52-B869-41AFF61D9651}
AdapterDesc:Broadcom NetLink (TM) Gigabit Ethernet
AdapterAddr:B8-AC-6F-1A-6A-46
AdapterType:6
IPAddress:172.16.27.30
IPMask:255.255.255.0