如何枚举到所有的网卡

导读：
　　 http://www.vckbase.com/document/viewdoc/?id=851

1.2 读取注册表取得适配器名称

在Windows2000中可以通过遍历 HKEY_LOCAL_MACHINE/System/CurrentControlSet/Control/Class/{4d36e972-e325-11ce-bfc1-08002be10318}/000n/ (n是从0开始编号的数字)所有接口, 在Windows NT中可以读取HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows NT/CurrentVersion/NetworkCards中的信息，下面以Windows2000为例： 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)
{
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)
{
// szData 中便是适配器详细描述
dwBufSize = 256;
if(RegQueryValueEx(hSubKey, "NetCfgInstanceID", 0, &dwDataType, szData, &dwBufSize) == ERROR_SUCCESS)
{
// szData 中便是适配器名称
}
}
}
}
RegCloseKey(hNdiIntKey);
}
RegCloseKey(hSubKey);
}

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

RegCloseKey(hKey);

本文转自
http://topic.csdn.net/t/20050125/17/3753106.html