notifyIcon1->ContextMenu = gcnew

System::Windows::Forms::ContextMenu();
System::Windows::Forms::MenuItem^ nIItem = gcnew
System::Windows::Forms::MenuItem("Open");

nIItem->Click += gcnew System::EventHandler(this, &your_class::Open_NotifyIcon);

notifyIcon1->ContextMenu->MenuItems->Add(nIItem);

Create a new Windows Application with the wizard. Delete Form1 from the code. Remove the code in Program.cs starting up the Form1. Use the NotifyIcon class to create your system tray icon (assign an icon to it). Add a contextmenu to it. Or react to NotifyIcon's mouseclick and differenciate between Right and Left click, setting your contextmenu and showing it for which ever button (right/left) was pressed. Application.Run() to keep the app running with Application.Exit() to quit. Or a bool bRunning = true; while(bRunning){Application.DoEvents(); Thread.Sleep(10);}. Then set bRunning = false; to exit the app.

您可以创建表单，修改它，然后将它传递给应用程序。作为参数运行。：

    internal static class Program
    {
        /// <summary>
        ///  The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            ApplicationConfiguration.Initialize();
            var form = new Form1();
            form.Hide();
            form.Opacity = 0;
            form.ShowInTaskbar = false;
            Application.Run(form);
        }
    }

添加你的通知图标和上下文菜单(如果需要)到你的表单在设计时作为一个常规的应用程序。确保你的通知图标是可见的，并有一个相关的图标。这还将允许您使用以后可能出于任何原因需要的表单

我将接受的答案改编为。net Core，使用推荐的替换已弃用类:

腰椎->腰椎 ->工具箱

Program.cs

namespace TrayOnlyWinFormsDemo
{
    internal static class Program
    {
        [STAThread]
        static void Main()
        {
            ApplicationConfiguration.Initialize();
            Application.Run(new MyCustomApplicationContext());
        }
    }
}

MyCustomApplicationContext.cs

using TrayOnlyWinFormsDemo.Properties;  // Needed for Resources.AppIcon

namespace TrayOnlyWinFormsDemo
{
    public class MyCustomApplicationContext : ApplicationContext
    {
        private NotifyIcon trayIcon;

        public MyCustomApplicationContext()
        {
            trayIcon = new NotifyIcon()
            {
                Icon = Resources.AppIcon,
                ContextMenuStrip = new ContextMenuStrip()
                {
                    Items = { new ToolStripMenuItem("Exit", null, Exit) }
                },
                Visible = true
            };
        }

        void Exit(object? sender, EventArgs e)
        {
            trayIcon.Visible = false;
            Application.Exit();
        }
    }
}

这是一个非常友好的框架通知区域应用程序…将NotificationIcon添加到基本表单并将自动生成的代码更改为下面的代码就足够了:

public partial class Form1 : Form
{
    private bool hidden = false;

    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        this.ShowInTaskbar = false;
        //this.WindowState = FormWindowState.Minimized;
        this.Hide();
        hidden = true;
    }

    private void notifyIcon1_Click(object sender, EventArgs e)
    {
        if (hidden) // this.WindowState == FormWindowState.Minimized)
        {
            // this.WindowState = FormWindowState.Normal;
            this.Show();
            hidden = false;
        }
        else
        {
            // this.WindowState = FormWindowState.Minimized;
            this.Hide();
            hidden = true;
        }
    }
}

代码项目文章创建任务托盘应用程序给出了创建只存在于系统托盘中的应用程序的非常简单的解释和示例。

基本上改变应用程序。运行中(新Form1 ());来启动一个继承自ApplicationContext的类，并让该类的构造函数初始化一个NotifyIcon

static class Program
{
    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);

        Application.Run(new MyCustomApplicationContext());
    }
}


public class MyCustomApplicationContext : ApplicationContext
{
    private NotifyIcon trayIcon;

    public MyCustomApplicationContext ()
    {
        // Initialize Tray Icon
        trayIcon = new NotifyIcon()
        {
            Icon = Resources.AppIcon,
            ContextMenu = new ContextMenu(new MenuItem[] {
                new MenuItem("Exit", Exit)
            }),
            Visible = true
        };
    }

    void Exit(object sender, EventArgs e)
    {
        // Hide tray icon, otherwise it will remain shown until user mouses over it
        trayIcon.Visible = false;

        Application.Exit();
    }
}