Функции для определения железа

HDEVINFO hDevInfo = SetupDiGetClassDevsEx(&GUID_DEVICE_BATTERY, NULL, NULL, DIGCF_PRESENT|DIGCF_DEVICEINTERFACE, 0, (LPCTSTR)NULL, NULL);
    if(INVALID_HANDLE_VALUE == hDevInfo) return false;
    
    SP_DEVICE_INTERFACE_DATA did;
    did.cbSize = sizeof(SP_INTERFACE_DEVICE_DATA);
    SetupDiEnumDeviceInterfaces(hDevInfo, 0, &GUID_DEVICE_BATTERY, 0, &did);
    if(ERROR_NO_MORE_ITEMS == GetLastError()) return false;
    
    DWORD dwRequired;
    BOOL bResult = SetupDiGetDeviceInterfaceDetail(hDevInfo, &did, NULL, 0, &dwRequired, NULL);
    if(!bResult && ERROR_INSUFFICIENT_BUFFER != GetLastError()) return false;
    
    PSP_DEVICE_INTERFACE_DETAIL_DATA pdidd;
    pdidd = (PSP_DEVICE_INTERFACE_DETAIL_DATA)LocalAlloc(LPTR, dwRequired);
    if(!pdidd) return false;
    
    pdidd->cbSize = sizeof(*pdidd);
    bResult = SetupDiGetDeviceInterfaceDetail(hDevInfo, &did, pdidd, dwRequired, &dwRequired, NULL);
    if(!bResult) return false;
    
    hBattery = CreateFile(pdidd->DevicePath, GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
    if(INVALID_HANDLE_VALUE == hBattery) return false;
    
    DWORD dwWait;
    DWORD dwOut;
    bResult = DeviceIoControl(hBattery, IOCTL_BATTERY_QUERY_TAG, &dwWait, sizeof(dwWait), &BatteryQueryInfo.BatteryTag, sizeof(BatteryQueryInfo.BatteryTag), &dwOut, NULL);
    if(!bResult) return false;
    
    LocalFree(pdidd);
    SetupDiDestroyDeviceInfoList(hDevInfo);