1.1.4  小试牛刀--编程(www.cppentry.com)实现获取MAC地址（4）

HKEY hNewKey;  
DWORD dwType = REG_SZ,dwDataSize = 256;  
dwSize = dwSubKeyLen + 1;  
::RegEnumKeyEx(hNetCard, i, lpszKeyName,  
&dwSize, NULL,NULL,NULL,NULL);  
lRtn = ::RegOpenKeyEx(hNetCard,lpszKeyName,0,KEY_READ,&hNewKey);  
if(lRtn == ERROR_SUCCESS)  
{  
lRtn = ::RegQueryValueEx(hNewKey, _T("Description"), NULL,  
&dwType, (LPBYTE)m_Cards[i].szDescription, &dwDataSize);  
dwDataSize = 256;  
lRtn = ::RegQueryValueEx(hNewKey, _T("ServiceName"), NULL,  
&dwType, (LPBYTE)szServiceName, &dwDataSize);  
if(lRtn == ERROR_SUCCESS)  
{  
TCHAR szNewKey[256];  
wsprintf(szNewKey, _T("%s\\Interfaces\\%s"),  
szParameters, szServiceName);  
HKEY hTcpKey;  
lRtn = ::RegOpenKeyEx(HKEY_LOCAL_MACHINE, szNewKey, 0,  
KEY_READ, &hTcpKey);  
if(lRtn == ERROR_SUCCESS)  
{  
dwDataSize = 256;  
::RegQueryValueEx(hTcpKey, _T("DefaultGateway"), NULL,  
&dwType, (LPBYTE)m_Cards[i].szGateWay, &dwDataSize);  
ProcessMultiString(m_Cards[i].szGateWay, dwDataSize);  
dwDataSize = 256;  
::RegQueryValueEx(hTcpKey, _T("IPAddress"), NULL,   
&dwType,(LPBYTE)m_Cards[i].szIpAddress,&dwDataSize);  
ProcessMultiString(m_Cards[i].szIpAddress,dwDataSize);  
dwDataSize = 256;  
::RegQueryValueEx(hTcpKey, _T("SubnetMask"), NULL,   
&dwType, (LPBYTE)m_Cards[i].szIpMask, &dwDataSize);  
ProcessMultiString(m_Cards[i].szIpMask, dwDataSize);  
dwDataSize = 256;  
::RegQueryValueEx(hTcpKey, _T("NameServer"), NULL,   
&dwType, (LPBYTE)m_Cards[i].szDNSNameServer,   
&dwDataSize);  
}  
::RegCloseKey(hTcpKey);  
}  
}  
::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;  
}  
delete []lpszKeyName;  
}  
::RegCloseKey(hNetCard);  
return lRtn == ERROR_SUCCESS   TRUE : FALSE;  
}  
UCHAR ClassNetSetting::GetAddressByIndex(int lana_num, ASTAT &Adapter)  
{  
NCB ncb;   
UCHAR uRetCode;   
memset(&ncb, 0, sizeof(ncb));   
ncb.ncb_command = NCBRESET;   
ncb.ncb_lana_num = lana_num;   
//指定网卡号，首先对选定的网卡发送一个NCBRESET命令，以便进行初始化   
uRetCode = Netbios(&ncb);   
memset(&ncb, 0, sizeof(ncb));   
ncb.ncb_command = NCBASTAT;   
ncb.ncb_lana_num = lana_num;   //指定网卡号   
strcpy((char*)ncb.ncb_callname, "*      " );   
ncb.ncb_buffer = (unsigned char *)&Adapter;   
//指定返回信息存放的变量   
ncb.ncb_length = sizeof(Adapter);   
//接着，可以发送NCBASTAT命令以获取网卡的信息   
uRetCode = Netbios(&ncb);   
return uRetCode;  
}   
 
void ClassNetSetting::ProcessMultiString(LPTSTR lpszString, DWORD dwSize)  
{   
for(int i=0; i<int(dwSize-2); i++)  
{  
if(lpszString[i] == _T('\0'))  
lpszString[i] = _T(',');  
}  
}