控制台禁止操作

首先是Windows API声明：

        #region windows api

        [DllImport("user32.dll", EntryPoint = "ShowWindow", SetLastError = true)]
        static extern bool ShowWindow(IntPtr hWnd, uint nCmdShow);
        [DllImport("user32.dll", EntryPoint = "FindWindow", SetLastError = true)]
        static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
        [DllImport("user32.dll ", EntryPoint = "GetSystemMenu", SetLastError = true)]
        static extern IntPtr GetSystemMenu(IntPtr hWnd, IntPtr bRevert);
        [DllImport("user32.dll ", EntryPoint = "RemoveMenu", SetLastError = true)]
        static extern int RemoveMenu(IntPtr hMenu, int nPos, int flags);

        #endregion

禁止开启两个进程，并根据配置是否隐藏控制台，或者是显示控制台，但是禁止关闭按钮，且令Ctrl + C作为普通输入；只能输入exit退出。

            new Mutex(true, Config.Instance.ServiceNo, out bool ret);
            if (!ret) return;
            
            Console.Title = Config.Instance.ServiceNo;
            IntPtr intptr = FindWindow("ConsoleWindowClass", Config.Instance.ServiceNo);
            
            if (Config.Instance.ShowUi == 0 && intptr != IntPtr.Zero)
            {
                ShowWindow(intptr, 0);//隐藏窗口
            }
            else
            {
                IntPtr CLOSE_MENU = GetSystemMenu(intptr, IntPtr.Zero); //找关闭按钮
                RemoveMenu(CLOSE_MENU, 0xF060, 0x0);//关闭按钮禁用
                Console.TreatControlCAsInput = true;
            }

            string key = "";
            while (key != null && key.ToLower() != "exit")
            {
                key = Console.ReadLine();
            }