listviewlabel.cs

基于ehotgis嵌入式gis平台的图层控制源码

using System;
using System.Drawing;
using System.Text;
using System.Collections;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace ListViewToolTip
{
	/// <summary>
	/// Summary description for ListViewLabel.
	/// </summary>
	public class ListViewLabel : ListViewExtender, IDisposable
	{
		public ListViewSubclass listViewSubclass;
		private HitItem hitItem;
        public delegate void OnItemSelectedEventHandler(int x,int y);
        public event OnItemSelectedEventHandler OnItemSelected;


		public ListViewLabel(ListView listView, bool editable) : base(listView)
		{
			// Init ListViewSubclass
			listViewSubclass = new ListViewSubclass(listView);
			listViewSubclass.MouseDown += new MouseEventHandler(ListView_MouseDown);
			
		}

		private void ListView_MouseDown(object sender, MouseEventArgs e)
		{
			hitItem = this.GetItemAt(e.X, e.Y);
            if ((hitItem.ItemIndex > -1)&&(OnItemSelected != null))
            {
                OnItemSelected(hitItem.ItemIndex, hitItem.SubItemIndex);
            }
		}

		~ListViewLabel()
		{

		}

		#region IDisposable Members

		public void Dispose()
		{
			listViewSubclass.ReleaseHandle();
		}

		#endregion
	}
}