CairoDesktop.MenuBar.OnWindowClosing C# (CSharp) Method

        private void OnWindowClosing(object sender, CancelEventArgs e)
        {
            if (CairoMessage.ShowOkCancel("You will need to reboot or use the start menu shortcut in order to run Cairo again.", "Are you sure you want to exit Cairo?", "Resources/cairoIcon.png", "Exit Cairo", "Cancel") == true)
            {
                //SHAppBarMessageHelper.DeRegisterBar(handle);
                System.Drawing.Size size = new System.Drawing.Size((int)this.ActualWidth, (int)this.ActualHeight);
                SHAppBarMessageHelper.RegisterBar(handle, size);
                SysTray.DestroySystemTray();
                Application.Current.Shutdown();
            }
            else
            {
                e.Cancel = true;
            }
        }