获取计算机网卡MAC地址的方法很多，这里采用的是命令行的形式获取，可以获取有线网卡与无线网卡的MAC地址，很简单，直接

上代码。

【1】头文件

#if !defined(AFX_95644697_C78F_4DD6_885B_3D7C40B2D55C__INCLUDED_)
#define AFX_95644697_C78F_4DD6_885B_3D7C40B2D55C__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include <iostream>
#include <string>
#include <windows.h>

using namespace std;

//--------------------------------------------------------------
//						网卡MAC地址
//--------------------------------------------------------------
BOOL GetMacByCmd(char *lpszMac, int len=128);


#endif // !defined(AFX_95644697_C78F_4DD6_885B_3D7C40B2D55C__INCLUDED_)

#include "stdafx.h"
#include "MacID.h"


//--------------------------------------------------------------
//						网卡MAC地址
//--------------------------------------------------------------
BOOL GetMacByCmd(char *lpszMac, int len/*=128*/)
{	
	const long MAX_COMMAND_SIZE = 10000; //命令行输出缓冲大小	
	WCHAR szFetCmd[]			= L"ipconfig /all"; //获取MAC命令行	
	const string strEnSearch = "Physical Address. . . . . . . . . : "; //网卡MAC地址的前导信息
	const string strChSearch = "物理地址. . . . . . . . . . . . . : ";
	
	BOOL   bret		  = FALSE;
	HANDLE hReadPipe  = NULL; //读取管道
	HANDLE hWritePipe = NULL; //写入管道	
	PROCESS_INFORMATION pi;   //进程信息	
	STARTUPINFO			si;	  //控制命令行窗口信息
	SECURITY_ATTRIBUTES sa;   //安全属性

	char			szBuffer[MAX_COMMAND_SIZE+1] = {0}; //放置命令行结果的输出缓冲区
	string			strBuffer;
	unsigned long	count = 0;
	long			ipos  = 0;

	pi.hProcess = NULL;
	pi.hThread  = NULL;
	si.cb		= sizeof(STARTUPINFO);
	sa.nLength	= sizeof(SECURITY_ATTRIBUTES);
	sa.lpSecurityDescriptor = NULL;
	sa.bInheritHandle		= TRUE;

	//1.0 创建管道
	bret = CreatePipe(&hReadPipe, &hWritePipe, &sa, 0);
	if(!bret)
	{
		goto END;
	}

	//2.0 设置命令行窗口的信息为指定的读写管道
	GetStartupInfo(&si);
	si.hStdError	= hWritePipe;
	si.hStdOutput	= hWritePipe;
	si.wShowWindow	= SW_HIDE; //隐藏命令行窗口
	si.dwFlags		= STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;

	//3.0 创建获取命令行的进程
	bret = CreateProcess(NULL, szFetCmd, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi );
	if(!bret)
	{
		goto END;
	}	

	//4.0 读取返回的数据
	WaitForSingleObject (pi.hProcess, 2000/*INFINITE*/);
	bret  =  ReadFile(hReadPipe,  szBuffer,  MAX_COMMAND_SIZE,  &count,  0);
	if(!bret)
	{
		goto END;
	}

	//5.0 查找MAC地址，默认查找第一个,一般为以太网的MAC
	strBuffer = szBuffer;
	ipos = strBuffer.find(strEnSearch);

	if (ipos < 0)//区分中英文的系统
	{		
		ipos = strBuffer.find(strChSearch);
		if (ipos < 1)
		{
			goto END;
		}
		//提取MAC地址串
		strBuffer = strBuffer.substr(ipos+strChSearch.length());
	}
	else
	{
		//提取MAC地址串
		strBuffer = strBuffer.substr(ipos+strEnSearch.length());
	}
			
	ipos = strBuffer.find("\n");
	strBuffer = strBuffer.substr(0, ipos);	

	memset(szBuffer, 0x00, sizeof(szBuffer));
	strcpy_s(szBuffer, strBuffer.c_str());

	//去掉中间的“00-50-EB-0F-27-82”中间的'-'得到0050EB0F2782
	int j = 0;
	for(int i=0; i<strlen(szBuffer); i++)
	{
		if(szBuffer[i] != '-')
		{
			lpszMac[j] = szBuffer[i];
			j++;
		}
	}

	bret = TRUE;

END:
	//关闭所有的句柄
	CloseHandle(hWritePipe);
	CloseHandle(hReadPipe);
	CloseHandle(pi.hProcess);
	CloseHandle(pi.hThread);

	return(bret);
}

	char lpszMac[128] = {0};
	//获取MAC
	GetMacByCmd(lpszMac);
	//打印出MAC
	cout << lpszMac << endl;

C++ 硬件信息 获取网卡MAC地址