1.1.4  小试牛刀--编程(www.cppentry.com)实现获取MAC地址（3）

::RegQueryValueEx(hNewKey,_T("IPAddress"), NULL,  
&dwType, (LPBYTE)m_Cards[i].szIpAddress, &dwDataSize);  
ProcessMultiString(m_Cards[i].szIpAddress, dwDataSize);  
dwDataSize = 256;  
::RegQueryValueEx(hNewKey, _T("IPMask"), NULL, &dwType,  
(LPBYTE)m_Cards[i].szIpMask, &dwDataSize);  
ProcessMultiString(m_Cards[i].szIpMask, dwDataSize);  
//拷贝前面得到的DNS主机名  
_tcscpy(m_Cards[i].szDNSNameServer, szNameServer);  
}  
::RegCloseKey(hNewKey);  
}  
m_Cards[i].szMacAddr[0] = m_MacAddr[i].b1;  
m_Cards[i].szMacAddr[1] = m_MacAddr[i].b2;  
m_Cards[i].szMacAddr[2] = m_MacAddr[i].b3;  
m_Cards[i].szMacAddr[3] = m_MacAddr[i].b4;  
m_Cards[i].szMacAddr[4] = m_MacAddr[i].b5;  
m_Cards[i].szMacAddr[5] = m_MacAddr[i].b6;  
}  
}  
::RegCloseKey(hNetCard);  
return lRet == ERROR_SUCCESS   TRUE : FALSE;  
}  
int ClassNetSetting::GetMacAddress(LPMAC_ADDRESS pMacAddr)  
{  
NCB ncb;   
UCHAR uRetCode;  
int num = 0;  
LANA_ENUM lana_enum;   
memset(&ncb, 0, sizeof(ncb));   
ncb.ncb_command = NCBENUM;   
ncb.ncb_buffer = (unsigned char *)&lana_enum;   
ncb.ncb_length = sizeof(lana_enum);   
//向网卡发送NCBENUM命令，以获取当前机器的网卡信息，如有多少个网卡，  
//每张网卡的编号等   
uRetCode = Netbios(&ncb);  
if (uRetCode == 0)   
{  
num = lana_enum.length;  
//对每一张网卡，以其网卡编号为输入编号，获取其MAC地址   
for (int i=0; i<num; i++)  
{  
ASTAT Adapter;  
if(GetAddressByIndex(lana_enum.lana[i],Adapter) == 0)  
{  
pMacAddr[i].b1 = Adapter.adapt.adapter_address[0];  
pMacAddr[i].b2 = Adapter.adapt.adapter_address[1];  
pMacAddr[i].b3 = Adapter.adapt.adapter_address[2];  
pMacAddr[i].b4 = Adapter.adapt.adapter_address[3];  
pMacAddr[i].b5 = Adapter.adapt.adapter_address[4];  
pMacAddr[i].b6 = Adapter.adapt.adapter_address[5];  
}  
}  
}  
return num;  
}  
BOOL ClassNetSetting::GetSettingOfWinNT()  
{  
LONG lRtn;  
HKEY hMainKey;  
TCHAR szParameters[256];  
//获得域名，主机名和是否使用IP路由  
_tcscpy(szParameters,  
_T("SYSTEM\\ControlSet001\\Services\\Tcpip\\Parameters"));  
lRtn = ::RegOpenKeyEx(HKEY_LOCAL_MACHINE,  
szParameters, 0, KEY_READ, &hMainKey);  
if(lRtn == ERROR_SUCCESS)  
{  
DWORD dwType,dwDataSize = 256;  
::RegQueryValueEx(hMainKey, _T("Domain"), NULL, &dwType,  
(LPBYTE)m_szDomain, &dwDataSize);  
dwDataSize = 256;  
::RegQueryValueEx(hMainKey, _T("Hostname"), NULL, &dwType,  
(LPBYTE)m_szHostName, &dwDataSize);  
dwDataSize = 256;  
::RegQueryValueEx(hMainKey, _T("IPEnableRouter"), NULL, &dwType,  
(LPBYTE)&m_IPEnableRouter, &dwDataSize);  
}  
::RegCloseKey(hMainKey);  
 
//获得IP地址和DNS解析等其他设置  
HKEY hNetCard = NULL;  
m_TotalNetCards = GetMacAddress(m_MacAddr);  
lRtn = ::RegOpenKeyEx(HKEY_LOCAL_MACHINE,  
_T("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\NetworkCards"),  
0, KEY_READ, &hNetCard);  
if(lRtn != ERROR_SUCCESS) //此处失败就返回  
{  
if(hNetCard != NULL)  
::RegCloseKey(hNetCard);  
return FALSE;  
}  
DWORD dwSubKeyNum=0, dwSubKeyLen=256;  
//得到子键的个数，通常与网卡个数相等  
lRtn = ::RegQueryInfoKey(hNetCard, NULL, NULL, NULL,  
&dwSubKeyNum, &dwSubKeyLen, NULL,NULL,NULL,NULL,NULL,NULL);  
if(lRtn == ERROR_SUCCESS)  
{  
m_TotalNetCards = dwSubKeyNum; //网卡个数以此为主  
LPTSTR lpszKeyName = new TCHAR[dwSubKeyLen + 1];  
DWORD dwSize;  
for(int i=0; i<(int)dwSubKeyNum; i++)  
{  
TCHAR szServiceName[256];