如何禁用Alt + F4结账表格？

document.addEventListener('keydown', function(event) {
  if (event.altKey && event.keyCode === 70) {
    event.preventDefault();
  }
});

import tkinter as tk

def on_key_press(event):
    if event.keycode == 70 and event.state & 0x08:
        return "break"

root = tk.Tk()
root.bind("<KeyPress>", on_key_press)
root.mainloop()

using System;
using System.Windows.Forms;

namespace DisableAltF4
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
        {
            if (keyData == (Keys.Alt | Keys.F4))
            {
                return true;
            }

            return base.ProcessCmdKey(ref msg, keyData);
        }
    }
}

import java.awt.event.KeyEvent;
import javax.swing.JFrame;

public class DisableAltF4 extends JFrame {

    public DisableAltF4() {
        setTitle("Disable Alt + F4");
        setSize(300, 200);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setVisible(true);
    }

    public void processKeyEvent(KeyEvent e) {
        if (e.getKeyCode() == KeyEvent.VK_F4 && e.isAltDown()) {
            e.consume();
        }
    }

    public static void main(String[] args) {
        DisableAltF4 app = new DisableAltF4();
        app.addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyPressed(java.awt.event.KeyEvent e) {
                app.processKeyEvent(e);
            }
        });
    }
}