使用c＃

Question

我正在从Link开始学习本教程，并添加菜单，但是在最小化到系统托盘并将其还原后无法键入控制台应用程序。

[DllImport("user32.dll", SetLastError = true)]
    static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);

    [DllImport("user32.dll")]
    static extern IntPtr GetShellWindow();

    [DllImport("user32.dll")]
    static extern IntPtr GetDesktopWindow();

    static NotifyIcon notifyIcon;
    static IntPtr processHandle;
    static IntPtr WinShell;
    static IntPtr WinDesktop;
    static MenuItem HideMenu;
    static MenuItem RestoreMenu;

    static Thread notifyThread;

    static void Main(string[] args)
    {
        int Input;
        do
        {
            Console.Clear();
            Console.WriteLine("Please select");
            Console.WriteLine("[1] Settings");
            Console.WriteLine("[2] View Messages");
            Console.WriteLine("[3] Run in background");
            Console.WriteLine("[4] Exit");

            while (!int.TryParse(Console.ReadLine(), out Input))
            {
                Console.WriteLine("Please enter a number only");
            }

            switch (Input)
            {
                case 1:
                    break;
                case 2:
                    break;
                case 3:
                    //notifyThread = new Thread(delegate ()
                    //{
                        notifyIcon = new NotifyIcon();
                        notifyIcon.Icon = new Icon("e_mail.ico");
                        notifyIcon.Text = "Email";
                        notifyIcon.Visible = true;

                        ContextMenu menu = new ContextMenu();
                        HideMenu = new MenuItem("Hide", new EventHandler(Minimize_Click));
                        RestoreMenu = new MenuItem("Restore", new EventHandler(Maximize_Click));

                        menu.MenuItems.Add(RestoreMenu);
                        menu.MenuItems.Add(HideMenu);
                        menu.MenuItems.Add(new MenuItem("Exit", new EventHandler(CleanExit)));

                        notifyIcon.ContextMenu = menu;

                        Task.Factory.StartNew(Run);
                        processHandle = Process.GetCurrentProcess().MainWindowHandle;
                        WinShell = GetShellWindow();
                        WinDesktop = GetDesktopWindow();

                        ResizeWindow(false);

                        Application.Run();
                    //});
                    //notifyThread.Start();
                    break;
                case 4:
                    Environment.Exit(-1);
                    break;
                default:
                    Input = 0;
                    break;
            }

        } while (Input == 0);

        Console.ReadKey();
    }

    static void Run()
    {
        Console.WriteLine("Listening to messages");
        while (true)
        {
            System.Threading.Thread.Sleep(1000);
        }
    }


    private static void CleanExit(object sender, EventArgs e)
    {
        notifyIcon.Visible = false;
        Application.Exit();
        Environment.Exit(1);
    }


    static void Minimize_Click(object sender, EventArgs e)
    {
        ResizeWindow(false);
    }


    static void Maximize_Click(object sender, EventArgs e)
    {

        ResizeWindow(); 
    }

    static void ResizeWindow(bool Restore = true)
    {
        if (Restore)
        {
            RestoreMenu.Enabled = false;
            HideMenu.Enabled = true; 
          SetParent(processHandle, WinDesktop); 
        }
        else
        {
            RestoreMenu.Enabled = true;
            HideMenu.Enabled = false;
            SetParent(processHandle, WinShell);
        }
    }

如果我选择数字3，它将最小化到系统托盘，并且图标上有一个上下文菜单可以恢复该选项。从系统托盘中恢复控制台应用程序后，我该如何允许它再次键入？