C#实现鼠标消息捕获

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace MouseDemo
{
    public partial class FrmMain : Form,IMessageFilter
    {
        public FrmMain()
        {
            InitializeComponent();
        }

        public bool PreFilterMessage(ref Message m)
        {
            if (m.Msg == 522)
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        /// <summary>
        /// 窗体加载
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void FrmMain_Load(object sender, EventArgs e)
        {
            InitComboBox();
        }

        /// <summary>
        /// 初始化ComboBox
        /// </summary>
        private void InitComboBox()
        {
            Dictionary<int, string> dictGrade = new Dictionary<int, string>();
            dictGrade.Add(1, "一年级");
            dictGrade.Add(2, "二年级");
            dictGrade.Add(3, "三年级");
            dictGrade.Add(4, "四年级");
            dictGrade.Add(5, "五年级");
            dictGrade.Add(6, "六年级");

            BindingSource dataSource = new BindingSource();
            dataSource.DataSource = dictGrade;
            cmb_Grade.DataSource = dataSource;
            cmb_Grade.DisplayMember = "Value";
            cmb_Grade.ValueMember = "Key";
        }

        /// <summary>
        /// 索引改变事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void cmb_Grade_SelectedIndexChanged(object sender, EventArgs e)
        {
              //添加消息过滤
            Application.AddMessageFilter(this);
        }


    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace MouseRightDemo
{
    public partial class FrmMouseRight : Form   ,IMessageFilter
    {
        public FrmMouseRight()
        {
            InitializeComponent();
        }

        /// <summary>
        /// 实现方法
        /// </summary>
        /// <param name="m"></param>
        /// <returns></returns>
        public bool PreFilterMessage(ref Message m)
        {
            //不响应鼠标右键
            if (m.Msg >= 516 && m.Msg <= 517)
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        /// <summary>
        /// 禁用鼠标右键
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, EventArgs e)
        {
               //添加消息
            Application.AddMessageFilter(this);
            MessageBox.Show("鼠标右键已被禁止使用", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }

        /// <summary>
        /// 解决禁用鼠标右键
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button2_Click(object sender, EventArgs e)
        {
                //移除消息
            Application.RemoveMessageFilter(this);
            MessageBox.Show("鼠标右键已被解除禁止使用，可以使用鼠标右键", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }
    }
}