wince下获取mac地址的简单方法！

下，可以通过访问注册表获取mac地址，可是非常可惜的是有些系统的注册表不提供这个键值，另外也可以通过 DeviceIoControl这类函数获得，但是所有方法要么不全面，要么不够简单或者有些平台bsp包根本就不支持，我捉摸了一个比较通用的方法，通过SendArp函数来获得，下面是代码，用起来比较简单，查msdn，获得方法如下

//
// Link with ws2_32.lib and iphlpapi.lib
//
#include <windows.h>
#include <stdio.h>
#include <tchar.h>
#include <iphlpapi.h>

int __cdecl main()
{
    HRESULT hr;
    IPAddr  ipAddr;
    ULONG   pulMac[2];
    ULONG   ulLen;
    ipAddr = inet_addr ("192.168.25.31");//设备自身的ip
    memset (pulMac, 0xff, sizeof (pulMac));
    ulLen = 6;

    hr = SendARP (ipAddr, 0, pulMac, &ulLen);
    printf ("Return %08x, length %8d/n", hr, ulLen);

    size_t i, j;
    char * szMac = new char[ulLen*3];
    PBYTE pbHexMac = (PBYTE) pulMac;
    //
    // Convert the binary MAC address into human-readable
    //
    for (i = 0, j = 0; i < ulLen - 1; ++i) {
        j += sprintf (szMac + j, "%02X:", pbHexMac[i]);
    }

    sprintf (szMac + j, "%02X", pbHexMac[i]);
    printf ("MAC address %s/n", szMac);

    delete [] szMac;
    return 0;
}

// // Link with ws2_32.lib and iphlpapi.lib // #include <windows.h> #include <stdio.h> #include <tchar.h> #include <iphlpapi.h> int __cdecl main() { HRESULT hr; IPAddr ipAddr; ULONG pulMac[2]; ULONG ulLen; ipAddr = inet_addr ("192.168.25.31");//设备自身的ip memset (pulMac, 0xff, sizeof (pulMac)); ulLen = 6; hr = SendARP (ipAddr, 0, pulMac, &ulLen); printf ("Return %08x, length %8d/n", hr, ulLen); size_t i, j; char * szMac = new char[ulLen*3]; PBYTE pbHexMac = (PBYTE) pulMac; // // Convert the binary MAC address into human-readable // for (i = 0, j = 0; i < ulLen - 1; ++i) { j += sprintf (szMac + j, "%02X:", pbHexMac[i]); } sprintf (szMac + j, "%02X", pbHexMac[i]); printf ("MAC address %s/n", szMac); delete [] szMac; return 0; } 

需要注意的是本机ip不能用环回地址，否则SendArp操作会失败

获得本机ip的方法很多，这里不列举，访问注册表即可