网卡的MAC是怎么得到的

网卡的MAC是如何得到的？
网卡的MAC是如何得到的？

------解决方案--------------------
//-----------------------------
// 取得所有网卡信息
//-----------------------------
BOOL GetAdapterInfo()
{
// 这里的代码适合WINDOWS2000，对于NT需要读取HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\NetworkCards
HKEY hKey, hSubKey, hNdiIntKey;

if(RegOpenKeyEx(HKEY_LOCAL_MACHINE,
"System\\CurrentControlSet\\Control\\Class\\{4d36e972-e325-11ce-bfc1-08002be10318} ",
0,
KEY_READ,
&hKey) != ERROR_SUCCESS)
return FALSE;

DWORD dwIndex = 0;
DWORD dwBufSize = 256;
DWORD dwDataType;
char szSubKey[256];
unsigned char szData[256];

while(RegEnumKeyEx(hKey, dwIndex++, szSubKey, &dwBufSize, NULL, NULL, NULL, NULL) == ERROR_SUCCESS)
{
//AfxMessageBox(szSubKey);
if(RegOpenKeyEx(hKey, szSubKey, 0, KEY_READ, &hSubKey) == ERROR_SUCCESS)
{
if(RegOpenKeyEx(hSubKey, "Ndi\\Interfaces ", 0, KEY_READ, &hNdiIntKey) == ERROR_SUCCESS)
{
dwBufSize = 256;
if(RegQueryValueEx(hNdiIntKey, "LowerRange ", 0, &dwDataType, szData, &dwBufSize) == ERROR_SUCCESS)
{
if(strcmp((char*)szData, "ethernet ") == 0) // 判断是不是以太网卡
{
dwBufSize = 256;
if(RegQueryValueEx(hSubKey, "DriverDesc ", 0, &dwDataType, szData, &dwBufSize) == ERROR_SUCCESS)
{
ADAPTER_INFO *pAI = new ADAPTER_INFO;
pAI-> strDriverDesc = (LPCTSTR)szData;
//AfxMessageBox((LPCTSTR)szData);
dwBufSize = 256;
if(RegQueryValueEx(hSubKey, "NetCfgInstanceID ", 0, &dwDataType, szData, &dwBufSize) == ERROR_SUCCESS)
{
pAI-> strName = (LPCTSTR)szData;
//AfxMessageBox((LPCTSTR)szData);
RegGetIP(pAI, (LPCTSTR)szData);
//AfxMessageBox((LPCTSTR)szData);
}
AdapterInfoVector.push_back(pAI); // 加入到容器中
}
}
}
RegCloseKey(hNdiIntKey);
}
RegCloseKey(hSubKey);
}

dwBufSize = 256;
} /* end of while */

RegCloseKey(hKey);

/*
// 可以使用GetAdaptersInfo来取得网卡信息，但其显示的名称不是很具体

ULONG ulAdapterInfoSize = sizeof(IP_ADAPTER_INFO);
IP_ADAPTER_INFO *pAdapterInfoBkp, *pAdapterInfo = (IP_ADAPTER_INFO*)new char[ulAdapterInfoSize];
if( GetAdaptersInfo(pAdapterInfo, &ulAdapterInfoSize) == ERROR_BUFFER_OVERFLOW ) // 缓冲区不够大
{
delete pAdapterInfo;
pAdapterInfo = (IP_ADAPTER_INFO*)new char[ulAdapterInfoSize];
pAdapterInfoBkp = pAdapterInfo;
}
if( GetAdaptersInfo(pAdapterInfo, &ulAdapterInfoSize) == ERROR_SUCCESS )
{
do {
if (pAdapterInfo-> Type == MIB_IF_TYPE_ETHERNET)
{
ADAPTER_INFO *pAI = new ADAPTER_INFO;
pAI-> strDriverDesc = pAdapterInfo-> Description;
pAI-> strName = pAdapterInfo-> AdapterName;
RegGetIP(pAI, (LPCTSTR)pAdapterInfo-> AdapterName); // 因为IP_ADAPTER_INFO中未包含掩码信息，所以干脆直接读注册表
AdapterInfoVector.push_back(pAI);
}
pAdapterInfo = pAdapterInfo-> Next;
} while(pAdapterInfo);