RegistryHelper::openKey

HKEY RegistryHelper::openKey(const wstring& key, REGSAM samDesired)
{
    HKEY rootKey;
    wstring subKey = splitKey(key, &rootKey);

    HKEY keyHandle;
    LSTATUS status = RegOpenKeyExW(rootKey, subKey.c_str(), 0, samDesired, &keyHandle);
    if (status != ERROR_SUCCESS)
        throw RegistryException(L"Error while opening registry key " + key + L": " + StringHelper::getSystemErrorString(status));

    return keyHandle;
}