public static void Open(NotificationArea notificationArea, Point position) { if (_instance == null) { _instance = new NotificationPropertiesWindow(notificationArea); _instance.Left = position.X + 10; _instance.Top = position.Y + 10; _instance.Show(); } else { _instance.Activate(); } }
private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e) { _instance = null; }