屏蔽鼠标消息

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace MyProg
{
 /// <summary>
 /// Form1 的摘要说明。
 /// </summary>
 public class Form1 : System.Windows.Forms.Form,IMessageFilter
 {
  public bool PreFilterMessage(ref System.Windows.Forms.Message SystemMessage)
  {
   if (SystemMessage.Msg >= 513 && SystemMessage.Msg <= 515) //513|515是对应目标消息的值，
                                                               //可以更改具体可以参照windows平台开发帮助
   
           {//不响应鼠标左键消息    
    return true;
   }
   return false;//响应则为false
  }
  private System.Windows.Forms.Button button1;
  private System.Windows.Forms.Button button2;
  /// <summary>
  /// 必需的设计器变量。
  /// </summary>
  private System.ComponentModel.Container components = null;

  public Form1()
  {
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();

   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
  }

  /// <summary>
  /// 清理所有正在使用的资源。
  /// </summary>
  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }

  #region Windows 窗体设计器生成的代码
  /// <summary>
  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  /// </summary>
  private void InitializeComponent()
  {
            this.button1 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            //
            // button1
            //
            this.button1.Location = new System.Drawing.Point(88, 40);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(136, 23);
            this.button1.TabIndex = 0;
            this.button1.Text = "禁止鼠标左键单击";
            this.button1.Click += new System.EventHandler(this.button1_Click);
            //
            // button2
            //
            this.button2.Location = new System.Drawing.Point(88, 80);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(136, 23);
            this.button2.TabIndex = 1;
            this.button2.Text = "允许鼠标左键单击";
            this.button2.Click += new System.EventHandler(this.button2_Click);
            //
            // Form1
            //
            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
            this.ClientSize = new System.Drawing.Size(312, 150);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.button1);
            this.MaximizeBox = false;
            this.Name = "Form1";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "演示屏蔽鼠标消息";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.ResumeLayout(false);

  }
  #endregion

  /// <summary>
  /// 应用程序的主入口点。
  /// </summary>
  [STAThread]
  static void Main()
  {
   Application.Run(new Form1());
  }

  private void button1_Click(object sender, System.EventArgs e)
  {//禁止鼠标左键单击
   Application.AddMessageFilter(this); 
   MessageBox.Show("鼠标左键已被禁止，请用Tab键执行操作！","信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
  }

  private void button2_Click(object sender, System.EventArgs e)
  {//允许鼠标左键单击
   Application.RemoveMessageFilter(this);  
   MessageBox.Show("鼠标左键已解禁，可以执行操作！","信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
  }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

 

        #region IMessageFilter 成员

        bool IMessageFilter.PreFilterMessage(ref Message m)
        {
            throw new Exception("The method or operation is not implemented.");
        }

        #endregion
    }
}