private void NewDevice_Click(object sender, RoutedEventArgs e)
        {
            if(null == _items)
            {
                return;
            }

            ScreenShortcutEdit editWindow = new ScreenShortcutEdit();
            editWindow.Owner = Application.Current.MainWindow;
            if (editWindow.ShowDialog() == true)
            {
                _items.Add(editWindow.Shortcut);
            }
        }
 private void EditDevice_Click(object sender, RoutedEventArgs e)
 {
     ScreenShortcutEdit editWindow = new ScreenShortcutEdit(ScreenShortcutListBox.SelectedItem as t_ScreenShortcut);
     editWindow.Owner = Application.Current.MainWindow;
     editWindow.ShowDialog();
 }