{
    LONG lResult;
    HKEY hSubKey = NULL;
    DWORD dwType, cbData;
    BYTE data[512];

    if (lpSubKey)
    {
        lResult = RegOpenKey(hKey, lpSubKey, &hSubKey);
        if (lResult != ERROR_SUCCESS)
            goto done;
        hKey = hSubKey;
    }

    cbData = sizeof(data);
    lResult = RegQueryValueEx(hKey, lpSrcValue, NULL, &dwType, data, &cbData);
    if (lResult != ERROR_SUCCESS)
        goto done;

    lResult = RegSetValueEx(hKey, lpDestValue, 0, dwType, data, cbData);
    if (lResult != ERROR_SUCCESS)
        goto done;

    RegDeleteValue(hKey, lpSrcValue);

done:
    if (hSubKey)
        RegCloseKey(hSubKey);
    return lResult;
}

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