C# 屏蔽ALT+F4组合键关闭窗体

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace CancelAltAndF4{ public partial class Frm_Main : Form { public Frm_Main() { InitializeComponent(); } private void Form1_KeyDown(object sender, KeyEventArgs e) { if (e.Alt && e.KeyValue == 115)//如果按下的Alt和F4 e.Handled = true;//不执行操作 } }}