C# Windows Forms -具有事件的不可见元素(单击并鼠标输入/离开)

using System;
using System.Windows.Forms;

public class InvisiblePanel : Panel
{
    public InvisiblePanel()
    {
        this.Visible = false; // 设置面板为不可见
        this.MouseClick += new MouseEventHandler(InvisiblePanel_MouseClick);
    }

    private void InvisiblePanel_MouseClick(object sender, MouseEventArgs e)
    {
        MessageBox.Show("不可见面板被点击了！");
    }
}

public class MainForm : Form
{
    private InvisiblePanel invisiblePanel;

    public MainForm()
    {
        invisiblePanel = new InvisiblePanel();
        invisiblePanel.Location = new System.Drawing.Point(50, 50);
        invisiblePanel.Size = new System.Drawing.Size(100, 100);
        this.Controls.Add(invisiblePanel);

        this.ClientSize = new System.Drawing.Size(300, 200);
        this.Text = "不可见元素事件示例";
    }

    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new MainForm());
    }
}