public void OnWindowClosing(object sender, CancelEventArgs e) { if (this == window) { window = null; } }
private void OpenThemesEdit(object sender, RoutedEventArgs e) { if (ThemesWindow.window != null) { return; } ThemesWindow themesWindow = new ThemesWindow(); themesWindow.Show(); }
public ThemesWindow() { if (window != null) { Close(); return; } InitializeComponent(); window = this; Closing += OnWindowClosing; }