跟着书做的，看起来比较粗糙，但还是能实现基本的鹰眼功能。
点滴记录学习，早日出人头地！
using ESRI.ArcGIS.Carto; using ESRI.ArcGIS.Controls; using ESRI.ArcGIS.Display; using ESRI.ArcGIS.Geometry; using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace 同步鹰眼 { public partial class Form1 : Form { #region 定义全局变量 /// <summary> /// 鹰眼地图上的矩形框可移动的标志 /// </summary> private bool bCanDrag; //鹰眼地图上的矩形框可移动的标志 /// <summary> /// 记录在移动鹰眼地图上的矩形框时鼠标的位置 /// </summary> private IPoint pMoveRectPoint; //记录在移动鹰眼地图上的矩形框时鼠标的位置 /// <summary> /// 记录数据视图的Extent（范围） /// </summary> private IEnvelope pEnv; //记录数据视图的Extent（范围） #endregion public Form1() { InitializeComponent(); //绑定控件 axTOCControl.SetBuddyControl(mainMapControl); axToolbarControl1.SetBuddyControl(mainMapControl); EagleEyeMapControl.Extent = mainMapControl.FullExtent;//初始化，鹰眼视图显示全部地图 pEnv = EagleEyeMapControl.Extent; DrawRectangle(pEnv); //画框 } private void mainMapControl_OnMapReplaced(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMapReplacedEvent e) { SynchronizeEagleEye();//Synchronize 使...同步 } #region 鹰眼同步 /// <summary> /// 鹰眼同步 /// </summary> private void SynchronizeEagleEye() { if (EagleEyeMapControl.LayerCount > 0) { EagleEyeMapControl.ClearLayers(); } //设置鹰眼和坐标系统一致 EagleEyeMapControl.SpatialReference = mainMapControl.SpatialReference;//SpatialReference 参考空间 for (int i = mainMapControl.LayerCount - 1; i >= 0; i -- ) { //使鹰眼视图与数据视图的图层上下顺序保持一致 ILayer pLayer = mainMapControl.get_Layer(i); if (pLayer is IGroupLayer || pLayer is ICompositeLayer)//判断是否兼容，可以转化 { ICompositeLayer pCompositeLayer = (ICompositeLayer)pLayer; for (int j = pCompositeLayer.Count - 1; j >= 0; j--) { ILayer pSubLayer = pCompositeLayer.get_Layer(j); IFeatureLayer pFeatureLayer = pSubLayer as IFeatureLayer; if (pFeatureLayer != null) //由于鹰眼地图比较小，所以不添加过滤点图层 { if (pFeatureLayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryPoint && pFeatureLayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryMultipoint) //添加Geodatabase引用 { EagleEyeMapControl.AddLayer(pLayer); } } } } else { IFeatureLayer pFeatureLayer = pLayer as IFeatureLayer; if (pFeatureLayer != null) { if (pFeatureLayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryPoint && pFeatureLayer.FeatureClass.ShapeType != esriGeometryType.esriGeometryMultipoint) { EagleEyeMapControl.AddLayer(pLayer); } } } //设置鹰眼地图全图显示 EagleEyeMapControl.Extent = mainMapControl.FullExtent; pEnv = mainMapControl.Extent as IEnvelope; DrawRectangle(pEnv);// EagleEyeMapControl.ActiveView.Refresh();//刷新 } } #endregion //移动矩形框 private void EagleEyeMapControl_OnMouseMove(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseMoveEvent e) { if (e.mapX > pEnv.XMin && e.mapY > pEnv.YMin && e.mapX < pEnv.XMax && e.mapY < pEnv.YMax) { //EagleEyeMapControl.MousePointer = esriControlsMousePointer.esriPointerHand;//如果鼠标移动到矩形框中时，鼠标变成小手，表示可以拖动//MousePointer鼠标指针 Cursor = Cursors.Hand;//鼠标转换成小手的效果，比上一行（114）的效果好一些 if (e.button == 2)//若按下鼠标右键，将鼠标演示设置为默认样式 { EagleEyeMapControl.MousePointer = esriControlsMousePointer.esriPointerDefault; } else { EagleEyeMapControl.MousePointer = esriControlsMousePointer.esriPointerDefault;//与其它位置将鼠标设置为默认的样式 } if (bCanDrag) { double Dx, Dy;//记录鼠标移动距离 Dx = e.mapX - pMoveRectPoint.X; Dy = e.mapY - pMoveRectPoint.Y;//根据偏移量更改pEnv位置 pEnv.Offset(Dx, Dy);//Offset（） moves the sides x units horizontally 水平方向移动x个单位 pMoveRectPoint.PutCoords(e.mapX, e.mapY); DrawRectangle(pEnv); mainMapControl.Extent = pEnv; } } } private void EagleEyeMapControl_OnMouseDown(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseDownEvent e) //按下鼠标不放 { if (EagleEyeMapControl.Map.LayerCount > 0)//判断鹰眼控件中是否有图层 { if (e.button == 1) //按下鼠标左键移动矩形框 { if (e.mapX > pEnv.XMin && e.mapY > pEnv.YMin && e.mapX < pEnv.XMax && e.mapY < pEnv.YMax)//如果指针落在鹰眼的矩形框中，标记可移动//(.mapX/Y)为鼠标xy坐标 { bCanDrag = true; //Drag 拖动 } pMoveRectPoint = new PointClass(); //MoveRectPoint 移动矩形点//PointClass 报错，修改报错引用嵌入操作为false pMoveRectPoint.PutCoords(e.mapX, e.mapY);//记录点击的第一个坐标 } else if (e.button == 2) //按下鼠标右键绘制矩形框 { IEnvelope pEnvelope = EagleEyeMapControl.TrackRectangle();//TrackRectangle 跟踪矩形 IPoint pTempPiont = new PointClass(); pTempPiont.PutCoords(pEnvelope.XMin + pEnvelope.Width / 2, pEnvelope.YMin + pEnvelope.Height / 2);//PutCoords 设置坐标//coordinate坐标 //设置或记录坐标XY，矩形左侧+二分之一宽即为X方向中心点，Y轴同理 mainMapControl.CenterAt(pTempPiont);//矩形框的高度和数据视图的高宽不一定成正比，这里做一个中心调整 } } } private void EagleEyeMapControl_OnMouseUp(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseUpEvent e) //鼠标抬起时触发//感觉更是click事件.... { if (e.button == 1 && pMoveRectPoint != null) //按下鼠标左键且矩形框位置发生变化 { if (e.mapX == pMoveRectPoint.X && e.mapY == pMoveRectPoint.Y)// { mainMapControl.CenterAt(pMoveRectPoint);//中心调整 } bCanDrag = false; } } private void mainMapControl_OnExtentUpdated(object sender, IMapControlEvents2_OnExtentUpdatedEvent e) { //得到当前视图范围 pEnv = (IEnvelope)e.newEnvelope; DrawRectangle(pEnv); } #region 鹰眼矩形框 /// <summary> /// 鹰眼矩形框 /// </summary> /// <param name="pEnvelope"></param> private void DrawRectangle(IEnvelope pEnvelope) { //在绘制前，清除鹰眼中I之前绘制的矩形框 IGraphicsContainer pGraphicsContainer = EagleEyeMapControl.Map as IGraphicsContainer; IActiveView pActiveView = pGraphicsContainer as IActiveView; pGraphicsContainer.DeleteAllElements(); //得到当前视图范围 IRectangleElement pRectangleElement = new RectangleElementClass();//RectangleElement 矩形元素 IElement pElement = pRectangleElement as IElement; pElement.Geometry = pEnvelope;//Envelope 包装；Geometry 几何 //设置矩形框（实质为中间透明度面） IRgbColor pRgbColor = new RgbColorClass();//若出现无法嵌入互操作报错。引用Display嵌入操作改为False pRgbColor = GetRgbColor(255, 0, 0);//红色 pRgbColor.Transparency = 255; ILineSymbol pOutLine = new SimpleLineSymbolClass(); pOutLine.Width = 2; //线条宽2 pOutLine.Color = pRgbColor; IFillSymbol pFillSymbol = new SimpleFillSymbolClass(); pRgbColor = new RgbColorClass(); pRgbColor.Transparency = 0; //Transparency 透明度为 0 pFillSymbol.Color = pRgbColor; pFillSymbol.Outline = pOutLine; //向鹰眼中添加矩形框 IFillShapeElement pFillShapeElement = pElement as IFillShapeElement; pFillShapeElement.Symbol = pFillSymbol; pGraphicsContainer.AddElement((IElement)pFillShapeElement, 0);//Graphics 图形 //刷新 pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);//PartialRefresh 局部刷新 } #endregion #region 获取RGB颜色 /// <summary> /// 获取RGB颜色 /// </summary> /// <param name="intR">红</param> /// <param name="intG">绿</param> /// <param name="intB">蓝</param> /// <returns></returns> private IRgbColor GetRgbColor(int intR, int intG, int intB) { IRgbColor pRgbColor = null; if (intR < 0 || intR > 255 || intG < 0 || intG > 255 || intB < 0 || intB > 255) { return pRgbColor; } pRgbColor = new RgbColorClass();//若出现无法嵌入互操作...，引用 DIsplay，属性，嵌入互操作类型 选择 False pRgbColor.Red = intR; pRgbColor.Green = intG; pRgbColor.Blue = intB; return pRgbColor; } #endregion #region 加载地图 private void btnAddMX_Click(object sender, EventArgs e) { try { OpenFileDialog pOpenFileDialog = new OpenFileDialog(); pOpenFileDialog.CheckFileExists = true; pOpenFileDialog.Title = "加载地图文档"; pOpenFileDialog.Filter = "AcrMap文档（*.mxd）|*.mxd|ArcMap(*.mxt)|*.mxt|发布地图文件(*.pmf)|*.pmf|所有地图格式(*.mxd;*.mxt;*.pmf)|*.mxd;*.mxt;*.pmf"; pOpenFileDialog.Multiselect = false; pOpenFileDialog.RestoreDirectory = true; if (pOpenFileDialog.ShowDialog() == DialogResult.OK) { string pFileName = pOpenFileDialog.FileName; if (pFileName == "") { return; } if (mainMapControl.CheckMxFile(pFileName)) { ClearAllData(); mainMapControl.LoadMxFile(pFileName); } else { MessageBox.Show(pFileName + "是无效的地图文档！", "提示！", MessageBoxButtons.YesNo, MessageBoxIcon.Warning); return; } } } catch (Exception ex) { MessageBox.Show("地图文档打开失败！" + ex.Message); } } #endregion #region ClearAllData private void ClearAllData() { if (mainMapControl.Map != null && mainMapControl.Map.LayerCount > 0) { //新建mainMapControl中Map IMap dataMap = new MapClass(); dataMap.Name = "Map"; mainMapControl.DocumentFilename = string.Empty; //DocumentFilename 文档文件名字 mainMapControl.Map = dataMap; //新建EagleEyeMapControl中Map IMap eagleEyeMap = new MapClass(); eagleEyeMap.Name = "eagleEyeMap"; EagleEyeMapControl.DocumentFilename = string.Empty; EagleEyeMapControl.Map = eagleEyeMap; } } #endregion } }