using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;namespace WindowsFormsApplication1{    public partial class Form1 : Form    {        [DllImport("user32.dll", CharSet = CharSet.Auto)]        public static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);        public Form1()        {            InitializeComponent();        }        private void button2_Click(object sender, EventArgs e)        {            listView1.Items.Add("111");            listView1.Items.Add("222");            listView1.Items.Add("333");            listView1.EnableItem(listView1.Items[2], false);            listView1.Items.Add("444");            listView1.EnableItem(listView1.Items[3], false);            listView1.Items.Add("555");            listView1.EnableItem(listView1.Items[4], false);            listView1.Items.Add("666");            listView1.Items.Add("777");            listView1.Items.Add("888");        }    }    public class ExListView : ListView    {        Dictionary
     
       _maskCheckBoxList;        public ExListView()        {            _maskCheckBoxList = new Dictionary
      
       ();        }        public void EnableItem(ListViewItem item,bool isEnable)        {            if (!isEnable)            {                CheckBox cb = new CheckBox() { Text = item.Text };                cb.Enabled = false;                this.Controls.Add(cb);                _maskCheckBoxList.Add(item.Index, cb);            }            else            {                this.Controls.Remove(_maskCheckBoxList[item.Index]);                _maskCheckBoxList.Remove(item.Index);            }        }        protected override void WndProc(ref Message m)        {            switch (m.Msg)            {                case 0x000F:                    if (View != View.Details)                        break;                    foreach (int index in _maskCheckBoxList.Keys)                    {                        Rectangle rect = Items[index].GetBounds(ItemBoundsPortion.Entire);                        //adjust                        rect.Y += 1;                        rect.X += 6;                        _maskCheckBoxList[index].Bounds = rect;                        if ((this.HeaderStyle != ColumnHeaderStyle.None) && (rect.Top < Font.Height))                        {                            _maskCheckBoxList[index].Visible = false;                            continue;                        }                        else                        {                            _maskCheckBoxList[index].Visible = true;                        }                    }                    break;            }            base.WndProc(ref m);        }    }}