ArcEngine中鷹眼實作

private void axMapControl1_OnMapReplaced_1(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMapReplacedEvent e)
        {
            this.axMapControl2.Map = new MapClass();
            for (int i = 1; i <= this.axMapControl1.LayerCount; i++)// 添加主地圖控件中的所有圖層到鷹眼控件中
            {                this.axMapControl2.AddLayer(this.axMapControl1.get_Layer(this.axMapControl1.LayerCount - i));
            }           
            this.axMapControl2.Extent = this.axMapControl1.FullExtent;// 設定 MapControl 顯示範圍至資料的全局範圍         
            this.axMapControl2.Refresh();// 重新整理鷹眼控件地圖
        }
        private void axMapControl1_OnExtentUpdated_1(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnExtentUpdatedEvent e)
        {
            // 得到新範圍
            IEnvelope pEnv = (IEnvelope)e.newEnvelope;
            IGraphicsContainer pGra = axMapControl2.Map as IGraphicsContainer;
            IActiveView pAv = pGra as IActiveView;
            // 在繪制前，清除 axMapControl2 中的任何圖形元素
            pGra.DeleteAllElements();
            IRectangleElement pRectangleEle = new RectangleElementClass();
            IElement pEle = pRectangleEle as IElement;
            pEle.Geometry = pEnv;
            // 設定鷹眼圖中的紅線框
            IRgbColor pColor = new RgbColorClass();
            pColor.Red = 255;
            pColor.Green = 0;
            pColor.Blue = 0;
            pColor.Transparency = 255;
            // 産生一個線符号對象
            ILineSymbol pOutline = new SimpleLineSymbolClass();
            pOutline.Width = 2;
            pOutline.Color = pColor;
            // 設定顔色屬性
            pColor = new RgbColorClass();
            pColor.Red = 255;
            pColor.Green = 0;
            pColor.Blue = 0;
            pColor.Transparency = 0;
            // 設定填充符号的屬性
            IFillSymbol pFillSymbol = new SimpleFillSymbolClass();
            pFillSymbol.Color = pColor;
            pFillSymbol.Outline = pOutline;
            IFillShapeElement pFillShapeEle = pEle as IFillShapeElement;
            pFillShapeEle.Symbol = pFillSymbol;
            pGra.AddElement((IElement)pFillShapeEle, 0);
            // 重新整理
            pAv.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
        }
        private void axMapControl2_OnMouseDown_1(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseDownEvent e)
        {
            if (this.axMapControl2.Map.LayerCount != 0)
            {
                // 按下滑鼠左鍵移動矩形框
                if (e.button == 1)
                {
                    IPoint pPoint = new PointClass();
                    pPoint.PutCoords(e.mapX, e.mapY);
                    IEnvelope pEnvelope = this.axMapControl1.Extent;
                    pEnvelope.CenterAt(pPoint);
                    this.axMapControl1.Extent = pEnvelope;  
                 this.axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
                }
                // 按下滑鼠右鍵繪制矩形框
                else if (e.button == 2)
                {
                    IEnvelope pEnvelop = this.axMapControl2.TrackRectangle();
                    this.axMapControl1.Extent = pEnvelop;

this.axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
                }
            }
        }
        private void axMapControl2_OnMouseMove_1(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseMoveEvent e)
        {
            if (e.button != 1) return;
            IPoint pPoint = new PointClass();
            pPoint.PutCoords(e.mapX, e.mapY);
            this.axMapControl1.CenterAt(pPoint);
          this.axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
        }