MapXtrem2004经典代码:asp.net鹰眼
以下两个类对MapXtrme2004 asp.net鹰眼功能进行了完全的封装。
用法:
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private void Page_Load(object sender, System.EventArgs e)
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{
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// 在此处放置用户代码以初始化页面
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Overview oc = new Overview(MapControl1,MapControl2);
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if(!IsPostBack)
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{
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}
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}
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/* 作者:xiexiaokui
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* 时间:2005-10-18
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* 功能:asp.net鹰眼
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*/
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using System;
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using MapInfo.Web.UI.WebControls;
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using MapInfo.Geometry;
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using MapInfo.Styles;
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using System.Drawing;
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using MapInfo.Data;
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/// <summary>
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/// OverviewTool 的摘要说明。
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/// </summary>
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public class OverviewMapToolEventArgs:System.EventArgs
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{
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System.Drawing.Point[] m_points;
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public OverviewMapToolEventArgs(System.Drawing.Point[] points)
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{
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this.m_points = points;
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}
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public System.Drawing.Point[] Points
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{
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get
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{
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return m_points;
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}
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set
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{
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m_points = value;
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}
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}
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}
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public delegate void OverviewMapToolEventHandler(object sender,OverviewMapToolEventArgs e);
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public class OverviewMapTool:MapTool
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{
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public static readonly string Toolname = "MapInfoWebOverview";
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// public DPoint Point1,Point2;
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string m_clientCodeSource;
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string m_clientStartMethod;
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string m_clientStopMethod;
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string m_cursorUrl;
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string m_name;
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public event OverviewMapToolEventHandler OverviewMapToolStop;
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protected void OnOverviewMapToolStop(OverviewMapToolEventArgs e)
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{
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if(this.OverviewMapToolStop != null)
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this.OverviewMapToolStop(this,e);
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}
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public OverviewMapTool()
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{
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this.ClientStartMethod = "MapInfoWebRectangleStart";
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this.ClientStopMethod = "MapInfoWebRectangleStop";
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this.Name = Toolname;
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}
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public override string ClientCodeSource
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{
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get
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{
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return m_clientCodeSource;
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}
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set
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{
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m_clientCodeSource = value;
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}
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}
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public override string ClientStartMethod
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{
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get
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{
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return m_clientStartMethod;
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}
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set
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{
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m_clientStartMethod = value;
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}
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}
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public override string ClientStopMethod
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{
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get
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{
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return m_clientStopMethod;
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}
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set
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{
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m_clientStopMethod = value;
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}
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}
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public override string CursorUrl
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{
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get
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{
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return m_cursorUrl;
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}
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set
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{
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m_cursorUrl = value;
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}
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}
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public override string Name
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{
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get
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{
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return m_name;
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}
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set
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{
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m_name = value;
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}
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}
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public override void Execute(string dataString, System.Collections.ArrayList selLayers, MapInfo.Mapping.Map map)
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{
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// DPoint dp1,dp2;
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System.Drawing.Point[] points = base.ExtractPoints(dataString);
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// map.DisplayTransform.FromDisplay(points[0],out dp1);
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// map.DisplayTransform.FromDisplay(points[1],out dp2);
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this.OnOverviewMapToolStop(new OverviewMapToolEventArgs(points));
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// OverviewMapTool omt = (OverviewMapTool)this.MapControl2.MapTools[MapControl2.MapTools.Count-1];
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// MapInfo.Geometry.DPoint dp1 = omt.Point1;
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// MapInfo.Geometry.DPoint dp2 = omt.Point2;
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// System.Drawing.Point p1,p2;
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// MapControl2.Map.DisplayTransform.ToDisplay(dp1,out p1);
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// MapControl2.Map.DisplayTransform.ToDisplay(dp2,out p2);
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// if(Math.Min(Math.Abs(points[0].X-points[1].X),Math.Abs(points[0].Y-points[1].Y))<5)
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// {
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// m_mainMapControl.Map.Center = dp1;
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// }
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// else
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// {
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// MapInfo.Geometry.DRect rect = new DRect(dp1,dp2);
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// m_mainMapControl.Map.SetView(rect,m_mainMapControl.Map.GetDisplayCoordSys());
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// }
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}
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}
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class Overview
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{
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MapInfo.Web.UI.WebControls.MapControl m_mainMapControl;
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MapInfo.Web.UI.WebControls.MapControl m_overviewMapControl;
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public Overview(MapInfo.Web.UI.WebControls.MapControl mainMapControl,MapInfo.Web.UI.WebControls.MapControl overviewMapControl)
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{
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MainMapControl = mainMapControl;
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OverviewMapControl = overviewMapControl;
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}
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public MapInfo.Web.UI.WebControls.MapControl MainMapControl
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{
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get
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{
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return m_mainMapControl;
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}
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set
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{
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m_mainMapControl = value;
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m_mainMapControl.PreRender += new EventHandler(MainMapControl_PreRender);
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}
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}
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public MapInfo.Web.UI.WebControls.MapControl OverviewMapControl
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{
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get
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{
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return m_overviewMapControl;
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}
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set
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{
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MapInfo.Data.Table table = MapInfo.Engine.Session.Current.Catalog.GetTable("temp_overview");
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m_overviewMapControl = value;
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OverviewMapTool omt = new OverviewMapTool();
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omt.OverviewMapToolStop += new OverviewMapToolEventHandler(omt_OverviewMapToolStop);
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this.m_overviewMapControl.MapTools.Add(omt);
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this.m_overviewMapControl.MapTools.CurrentTool = omt.Name;
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if(table == null)
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{
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this.m_overviewMapControl.Map.Load(new MapInfo.Mapping.MapTableLoader(m_mainMapControl.Map.Layers.GetTableEnumerator()));
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MapInfo.Data.TableInfo ti = MapInfo.Data.TableInfoFactory.CreateTemp("temp_overview");
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MapInfo.Data.TableSessionInfo tsi = new MapInfo.Data.TableSessionInfo();
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table = MapInfo.Engine.Session.Current.Catalog.CreateTable(ti);
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MapInfo.Mapping.FeatureLayer fl = new MapInfo.Mapping.FeatureLayer(table);
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m_overviewMapControl.Map.Layers.Insert(0,fl);
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}
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}
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}
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protected void MainMapControl_PreRender(object sender, EventArgs e)
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{
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DRect dr = this.m_mainMapControl.Map.Bounds;
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FeatureGeometry fg = new MapInfo.Geometry.Rectangle(m_mainMapControl.Map.GetDisplayCoordSys(),dr);
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MapInfo.Styles.SimpleLineStyle sls = new MapInfo.Styles.SimpleLineStyle(new LineWidth(1,LineWidthUnit.Pixel),2,Color.Red);
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MapInfo.Styles.SimpleInterior si = new MapInfo.Styles.SimpleInterior(1);
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MapInfo.Styles.AreaStyle arst = new MapInfo.Styles.AreaStyle(sls,si);
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// MapInfo.Styles.CompositeStyle cs = new MapInfo.Styles.CompositeStyle(arst,null,null,null);
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MapInfo.Styles.CompositeStyle cs = new MapInfo.Styles.CompositeStyle(arst);
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MapInfo.Data.Feature f = new Feature(fg,arst);
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MapInfo.Data.Table table = MapInfo.Engine.Session.Current.Catalog.GetTable("temp_overview");
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(table as ITableFeatureCollection).Clear();
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table.InsertFeature(f);
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m_overviewMapControl.Map.Layers["temp_overview"].Invalidate();
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//table.Refresh();
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}
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private void omt_OverviewMapToolStop(object sender, OverviewMapToolEventArgs e)
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{
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DPoint dp1,dp2;
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System.Drawing.Point[] points = e.Points;
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m_overviewMapControl.Map.DisplayTransform.FromDisplay(points[0],out dp1);
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m_overviewMapControl.Map.DisplayTransform.FromDisplay(points[1],out dp2);
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// OverviewMapTool omt = (OverviewMapTool)this.MapControl2.MapTools[MapControl2.MapTools.Count-1];
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// MapInfo.Geometry.DPoint dp1 = omt.Point1;
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// MapInfo.Geometry.DPoint dp2 = omt.Point2;
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// System.Drawing.Point p1,p2;
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// MapControl2.Map.DisplayTransform.ToDisplay(dp1,out p1);
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// MapControl2.Map.DisplayTransform.ToDisplay(dp2,out p2);
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if(Math.Min(Math.Abs(points[0].X-points[1].X),Math.Abs(points[0].Y-points[1].Y))<5)
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{
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m_mainMapControl.Map.Center = dp1;
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}
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else
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{
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MapInfo.Geometry.DRect rect = new DRect(dp1,dp2);
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m_mainMapControl.Map.SetView(rect,m_mainMapControl.Map.GetDisplayCoordSys());
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}
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}
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}
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