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{ // 遍历所有适配器 if(pAdapterInfo->Type == MIB_IF_TYPE_ETHERNET) // 判断是否为以太网接口 { // pAdapterInfo->Description 是适配器描述 // pAdapterInfo->AdapterName 是适配器名称 } pAdapterInfo = pAdapterInfo->Next; }while(pAdapterInfo); } delete pAdapterInfoBkp; 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);
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