//----< open window showing contents of project directory >------
private void Window_Loaded(object sender, RoutedEventArgs e)
{
path = Directory.GetCurrentDirectory();
path = getAncestorPath(3, path);
LoadNavTab(path);
trns = TranslatorFactory.CreateFactory();
Regex.Text = "^[b-dB-D].*\\.(h|cpp)";
Convert_Click(sender, e);
}