Snoop.SnoopUI.OnClosing C# (CSharp) Method

        protected override void OnClosing(CancelEventArgs e)
        {
            base.OnClosing(e);

            this.CurrentSelection = null;

            InputManager.Current.PreProcessInput -= this.HandlePreProcessInput;
            EventsListener.Stop();

            // persist the window placement details to the user settings.
            WINDOWPLACEMENT wp = new WINDOWPLACEMENT();
            IntPtr hwnd = new WindowInteropHelper(this).Handle;
            Win32.GetWindowPlacement(hwnd, out wp);
            Properties.Settings.Default.SnoopUIWindowPlacement = wp;

            // persist whether all properties are shown by default
            Properties.Settings.Default.ShowDefaults = this.PropertyGrid.ShowDefaults;

            // persist whether the previewer is shown by default
            Properties.Settings.Default.ShowPreviewer = this.PreviewArea.IsActive;

            // actually do the persisting
            Properties.Settings.Default.Save();

            SnoopPartsRegistry.RemoveSnoopVisualTreeRoot(this);
        }