帮忙注释一段代码

以下是Windows编程下窗体闪烁的代码，请在需要注释的地方作详细注释：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;   //这句需要注释
namespace Example
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        [DllImport("User32")]  //这句需要注释
        public static extern bool FlashWindow(IntPtr hWnd,bool bInvert);    //这句需要注释     
        private void button1_Click(object sender, EventArgs e)
        {
            int MyCount,MyTimes,MyTime;
            try
            {
               MyTimes=System.Convert.ToInt16(this.textBox1.Text);
               MyTime=System.Convert.ToInt16(this.textBox2.Text);
               
                for(MyCount=0;MyCount<MyTimes;MyCount++)
               {
                   FlashWindow(this.Handle,true);     //这句需要注释
                   System.Threading.Thread.Sleep(MyTime);   
               }
            }
            catch(Exception   MyEx)
            {
                System.Windows.Forms.MessageBox.Show(MyEx.Message,"信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
            }
        }        private void textBox2_TextChanged(object sender, EventArgs e)
        {        }        private void Form1_Load(object sender, EventArgs e)
        {        }            
    }
}