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ArcEngine 一些实现代码

2017-11-21 1250
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简介：

转自原文 ArcEngine 一些实现代码

 
 

●·● 目录：

A1 …………实现：鼠标滑过显示要素 tip
A2 …………实现：通过鼠标选择要素并高亮显示（ISelectionEnvironment）
A3 …………实现：只显示筛选的要素（IFeatureLayerDefinition）
A4 …………实现：高亮显示筛选的要素（IFeatureSelection）
A5 …………实现：类似 ArcMap 中 Identify 工具的效果（IIdentify、IArray、IIdentifyObj）
A6 …………实现：在 MapControl 上绘制几何图形
　　　　 　　实现：在 MapControl 上绘制几何图形（IGraphicsContainer，几何：圆）

A7 …………实现：在 MapControl 自由旋转地图（IScreenDisplay [RotateMoveTo]）
　　实现：在 MapControl 中鼠标与地图反向移动（IScreenDisplay [PanMoveTo]）

A8 …………实现：弹出颜色选择器（IColorPalette、IColorSelector、IColorBrowser）
　　　　 　　实现：获取控件的屏幕位置（两种方法）

A9 …………实现：实现：Symbol 对象（ISimpleMarkerSymbol、Arrow、Character、Picture）

 

G1 …………实现：Symbol 对象
G2 …………实现：显示图层的属性窗口
G3 …………实现：PageLayoutControl 的样式设置（IBorder、IBackground、IShadow、IMapGrid）
G4 …………实现：删除shapefile文件中的重复数据
G5 …………实现：MapControl 与 PageLayoutControl 的交互
G6 …………实现：制作可以浮动的工具栏
G7 …………实现：ArcGIS Engine 实现鹰眼 & 分析（IGraphicsContainer、IFillShapeElement）
G8 …………实现：独立窗口的鹰眼显示（IHookHelper）
G9 …………实现：自定义工具窗口（ICustomizeDialog、ICustomizeDialogEvents）

 

U1 …………实现：Map 与 PageLayout 切换后工具不变
U2 …………实现：在窗体中显示渐变颜色 & 根据名称获取控件（IAlgorithmicColorRamp、IEnumColor）
U3 …………实现：获取地图是否处于编辑状态（IDataset、IWorkspaceEdit）
U4 …………实现：获取地图是否处于编辑状态
U5 …………实现：获取地图是否处于编辑状态

 

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●·●实现：鼠标滑过显示要素 tip：

对于这个有两个方法：

第一种：通过将 axmapcontrol 自带的 ShowMapTips 属性设置为 true 来实现。

第二种：通过 .NET 自带的控件 ToolTip 来实现！

第一种代码：

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private void axMapControl1_OnMouseMove(object sender, IMapControlEvents2_OnMouseMoveEvent e)
{
    axMapControl1.ShowMapTips = true;
    IFeatureLayer pFeatureLayer = axMapControl1.Map.get_Layer(0) as IFeatureLayer; pFeatureLayer.DisplayField = "Name"; pFeatureLayer.ShowTips = true; }
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第二种代码：

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private void axMapControl1_OnMouseMove(object sender, IMapControlEvents2_OnMouseMoveEvent e)
{
 IFeatureLayer pFeatureLayer = axMapControl1.Map.get_Layer(0) as IFeatureLayer; pFeatureLayer.DisplayField = "Name"; pFeatureLayer.ShowTips = true; string pTip; pTip = pFeatureLayer.get_TipText(e.mapX, e.mapY, axMapControl1.ActiveView.FullExtent.Width / 10000); if (pTip != null) { toolTip1.SetToolTip(axMapControl1, "名称：" + pTip); } else //当 ToolTip 空间显示的内容为 null 的时候，就不会显示了！相当于隐藏了！ { toolTip1.SetToolTip(axMapControl1, ""); } }
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以上两种方法都可以实现显示标注，但是第二种效果更好一点~！

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●·●实现：通过鼠标选择要素并高亮显示：

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●·●ISelectionEnvironment 接口：

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通过 IMap 接口的 SelectByShape 方法来实现！同时可以修改高亮显示的颜色！

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        private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)
        {
            axMapControl1.MousePointer = esriControlsMousePointer.esriPointerDefault;
            IMap pMap = axMapControl1.Map;
            IGeometry pGeometry = axMapControl1.TrackRectangle();       //获取框选几何
            ISelectionEnvironment pSelectionEnv = new SelectionEnvironment(); //新建选择环境
            IRgbColor pColor = new RgbColor();
            pColor.Red = 255; pSelectionEnv.DefaultColor = pColor; //设置高亮显示的颜色！ pMap.SelectByShape(pGeometry, pSelectionEnv, false); //选择图形！ axMapControl1.Refresh(esriViewDrawPhase.esriViewGeoSelection, null, null); }
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●·●实现：只显示筛选的要素：

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●·●IFeatureLayerDefinition 接口：

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1. 通过 IFeatureLayerDefinition 接口的 DefinitionExpression 属性可以实现！

IFeatureLayer pFeatureLayer = axMapControl1.Map.get_Layer(0) as IFeatureLayer;
IFeatureLayerDefinition pFeatLyrDef = pFeatureLayer as IFeatureLayerDefinition; //新建 IFeatureLayerDefinition 接口实例
pFeatLyrDef.DefinitionExpression = "Area > 20";　　//定义筛选条件 axMapControl1.ActiveView.Refresh();　　//刷新

这样便只显示符合要求的部分了！即面积大于20的要素！

2. 通过 IFeatureLayerDefinition 接口的 CreatSelectionLayer 方法可以通过筛选建立新图层！

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IFeatureLayer pFeatureLayer = axMapControl1.Map.get_Layer(0) as IFeatureLayer;
IFeatureLayerDefinition pFeatLyrDef = pFeatureLayer as IFeatureLayerDefinition;
pFeatLyrDef.DefinitionExpression = "Area > 20"; axMapControl1.ActiveView.Refresh(); //重新定义的图层 IQueryFilter pQueryFilter = new QueryFilter(); pQueryFilter.WhereClause = "POP > 10"; IFeatureSelection pFeatSel = pFeatureLayer as IFeatureSelection; pFeatSel.SelectFeatures(pQueryFilter, esriSelectionResultEnum.esriSelectionResultNew, false); axMapControl1.Refresh(esriViewDrawPhase.esriViewGeoSelection, null, null);　　//在新定义图层的基础上进行的查询 IFeatureLayer pNewFeat = pFeatLyrDef.CreateSelectionLayer("New Layer", true, null, null);　　//新建的图层包括上面两者的交集部分！ pFeatSel.Clear(); axMapControl1.Map.AddLayer(pNewFeat); MessageBox.Show(axMapControl1.Map.LayerCount.ToString());
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首先是建立一个虚拟的新图层，然后在此新图层的基础上进行筛选，然后从而生成新的图层！

参考：http://blog.csdn.net/qinyilang/article/details/6575539
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●·●实现：高亮显示筛选的要素：

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●·●IFeatureSelection 接口：

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通过 IFeatureSelection 接口的 SelectFeatures 方法可以实现！

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IFeatureLayer pFeatureLayer = axMapControl1.Map.get_Layer(0) as IFeatureLayer;

IQueryFilter pQueryFilter = new QueryFilter();　　//建立查询
pQueryFilter.WhereClause = "POP > 10"; IFeatureSelection pFeatSel = pFeatureLayer as IFeatureSelection;　　//新建 IFeatureSelection 接口实例 pFeatSel.SelectFeatures(pQueryFilter, esriSelectionResultEnum.esriSelectionResultNew, false);　　//实现方法，选择筛选的部分！ axMapControl1.Refresh(esriViewDrawPhase.esriViewGeoSelection, null, null);
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●·●实现：类似 ArcMap 中 Identify 工具的效果：

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●·●IIdentify 接口：

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●·●IIdentifyObj 接口：

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●·●IArray 接口：

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主要实现点击查询并闪烁显示，并把查询要素的信息通过DataGridView显示出来，主要用到的接口：IIdentity、IArray、IIdentifyObj

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IIdentify pIdentify = axMapControl1.Map.get_Layer(0) as IIdentify; //通过图层获取 IIdentify 实例
IPoint pPoint = new ESRI.ArcGIS.Geometry.Point(); //新建点来选择
IArray pIDArray;
IIdentifyObj pIdObj;

pPoint.PutCoords(e.mapX, e.mapY);      //定义点
pIDArray = pIdentify.Identify(pPoint);       //通过点获取数组，用点一般只能选择一个元素
if (pIDArray != null)
{
    pIdObj = pIDArray.get_Element(0) as IIdentifyObj; //取得要素 pIdObj.Flash(axMapControl1.ActiveView.ScreenDisplay); //闪烁效果 MessageBox.Show("Layer: " + pIdObj.Layer.Name + "\n" + "Feature: " + pIdObj.Name); //输出信息 } else { MessageBox.Show("Nothing!"); }
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效果：

框选实现如下所示：

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IIdentify pIdentify = axMapControl1.Map.get_Layer(0) as IIdentify;
IGeometry pGeo = axMapControl1.TrackRectangle() as IGeometry;
IArray pIDArray;
IIdentifyObj pIdObj;

pIDArray = pIdentify.Identify(pGeo);
if (pIDArray != null)
{
    string str = "\n"; string lyrName = ""; for (int i = 0; i < pIDArray.Count;i++ ) { pIdObj = pIDArray.get_Element(i) as IIdentifyObj; pIdObj.Flash(axMapControl1.ActiveView.ScreenDisplay); str += pIdObj.Name + "\n"; lyrName = pIdObj.Layer.Name; } MessageBox.Show("Layer: " + lyrName + "\n" + "Feature: " + str); } else { MessageBox.Show("Nothing!"); }
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效果如下：

参考：http://blog.csdn.net/mjhwy/article/details/7337426

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●·●实现：在 MapControl 上绘制几何图形：

可以直接使用 axMapControl1.DrawShape 方法来实现~！

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ISimpleLineSymbol pLineSym = new SimpleLineSymbol();
IRgbColor pColor = new RgbColor();
pColor.Red = 11;
pColor.Green = 120;
pColor.Blue = 233;
pLineSym.Color = pColor;
pLineSym.Style = esriSimpleLineStyle.esriSLSSolid;
pLineSym.Width = 2; IPolyline pLine = axMapControl1.TrackLine() as IPolyline; object symbol = pLineSym as object; axMapControl1.DrawShape(pLine, ref symbol);
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也可以通过 IScreenDisplay 接口的方法来实现！~

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ISimpleLineSymbol pLineSym = new SimpleLineSymbol();
IRgbColor pColor = new RgbColor();
pColor.Red = 11;
pColor.Green = 120;
pColor.Blue = 233;
pLineSym.Color = pColor;
pLineSym.Style = esriSimpleLineStyle.esriSLSSolid;
pLineSym.Width = 2; IPolyline pLine = axMapControl1.TrackLine() as IPolyline; IScreenDisplay pScreenDisplay = axMapControl1.ActiveView.ScreenDisplay; pScreenDisplay.StartDrawing(pScreenDisplay.hDC, 1); pScreenDisplay.SetSymbol(pLineSym as ISymbol); pScreenDisplay.DrawPolyline(pLine); pScreenDisplay.FinishDrawing();
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通过比较，只是后面实现的部分不同，前面都是相同的！

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●·●实现：在 MapControl 上绘制几何图形（IGraphicsContainer，几何：圆）：

　　普通的图形，可以直接向下面一样实现！

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m_ActiveView = m_hookHelper.ActiveView;
m_Map = m_hookHelper.FocusMap;
IScreenDisplay pScreenDisplay = m_ActiveView.ScreenDisplay;
IRubberBand pRubberPolygon = new RubberPolygonClass();
ISimpleFillSymbol pFillSymbol = new SimpleFillSymbolClass(); pFillSymbol.Color = getRGB(255, 255, 0); IPolygon pPolygon = pRubberPolygon.TrackNew(pScreenDisplay, (ISymbol)pFillSymbol) as IPolygon; pFillSymbol.Style = esriSimpleFillStyle.esriSFSDiagonalCross; pFillSymbol.Color = getRGB(0, 255, 255); IFillShapeElement pPolygonEle = new PolygonElementClass(); pPolygonEle.Symbol = pFillSymbol; IElement pEle = pPolygonEle as IElement; pEle.Geometry = pPolygon; IGraphicsContainer pGraphicsContainer = m_Map as IGraphicsContainer; pGraphicsContainer.AddElement(pEle, 0); m_ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
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　　画圆比较特殊，因为没有圆这个现成的几何体，因此要转换，如下所示：

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m_ActiveView = m_hookHelper.ActiveView;
m_Map = m_hookHelper.FocusMap;
IScreenDisplay pScreenDisplay = m_ActiveView.ScreenDisplay;
IRubberBand pRubberCircle = new RubberCircleClass();
ISimpleFillSymbol pFillSymbol = new SimpleFillSymbolClass(); pFillSymbol.Color = getRGB(255, 255, 0); IGeometry pCircle = pRubberCircle.TrackNew(pScreenDisplay, (ISymbol)pFillSymbol) as IGeometry; IPolygon pPolygon = new PolygonClass();　　　　//空的多边形 ISegmentCollection pSegmentCollection = pPolygon as ISegmentCollection;　　//段集合 ISegment pSegment = pCircle as ISegment;　　//将圆赋值给段 object missing = Type.Missing;　　//显示默认值 pSegmentCollection.AddSegment(pSegment, ref missing, ref missing);　　//给空多边形加入圆 pFillSymbol.Style = esriSimpleFillStyle.esriSFSDiagonalCross; pFillSymbol.Color = getRGB(0, 255, 255); IFillShapeElement pPolygonEle = new PolygonElementClass(); pPolygonEle.Symbol = pFillSymbol; IElement pEle = pPolygonEle as IElement; pEle.Geometry = pPolygon; IGraphicsContainer pGraphicsContainer = m_Map as IGraphicsContainer; pGraphicsContainer.AddElement(pEle, 0); m_ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
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●·●实现：在 MapControl 自由旋转地图：

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●·●IScreenDisplay 接口：

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通过 IScreenDisplay 接口来实现！

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//鼠标按下！
private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)
{
    IPoint pPoint = new PointClass();
    pPoint.PutCoords(e.mapX, e.mapY);
    IPoint pCentrePoint = new PointClass();
    pCentrePoint.PutCoords(axMapControl1.Extent.XMin + axMapControl1.ActiveView.Extent.Width / 2, axMapControl1.Extent.YMax - axMapControl1.ActiveView.Extent.Height / 2); //获取图像的中心位置 axMapControl1.ActiveView.ScreenDisplay.RotateStart(pPoint, pCentrePoint); //开始旋转 }
//鼠标移动！
private void axMapControl1_OnMouseMove(object sender, IMapControlEvents2_OnMouseMoveEvent e)
{
    IPoint pPoint = new PointClass();
    pPoint.PutCoords(e.mapX, e.mapY);
    axMapControl1.ActiveView.ScreenDisplay.RotateMoveTo(pPoint);    //旋转到鼠标的位置 axMapControl1.ActiveView.ScreenDisplay.RotateTimer(); //可以忽略 }
//鼠标抬起！
private void axMapControl1_OnMouseUp(object sender, IMapControlEvents2_OnMouseUpEvent e)
{
    double dRotationAngle = axMapControl1.ActiveView.ScreenDisplay.RotateStop(); //获取旋转的角度 axMapControl1.Rotation = dRotationAngle; //赋值给 axMapControl1.Rotation，这下真的旋转了！ axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null); //刷新！ }
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●·●实现：在 MapControl 中鼠标与地图反向移动：

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double startMapX = 0;
double startMapY = 0; IScreenDisplay pScreenDisplay; private void Form1_Load(object sender, EventArgs e)　　//窗体加载信息 { pScreenDisplay = axMapControl1.ActiveView.ScreenDisplay; } private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)　　//鼠标按下的时候触发 { IPoint pPoint = new PointClass(); pPoint.PutCoords(e.mapX, e.mapY); pScreenDisplay.PanStart(pPoint); startMapY = e.mapY; startMapX = e.mapX; } private void axMapControl1_OnMouseMove(object sender, IMapControlEvents2_OnMouseMoveEvent e)　　//鼠标移动的时候触发 { IPoint pPoint = new PointClass(); pPoint.PutCoords(startMapX * 2 - e.mapX, startMapY * 2 - e.mapY); //获取当前点关于起始点的对称点 pScreenDisplay.PanMoveTo(pPoint); } private void axMapControl1_OnMouseUp(object sender, IMapControlEvents2_OnMouseUpEvent e)　　　　//鼠标松开的时候触发 { pScreenDisplay.PanStop(); }
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●·●实现：弹出颜色选择器：

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●·●IColorPalette 接口：

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1. ColorPalette：

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private void button1_Click(object sender, EventArgs e)
{
    IColor pColor = new RgbColor(); pColor.RGB = 255; tagRECT pTag = new tagRECT(); pTag.left = this.Left + button1.Left + button1.Width; pTag.bottom = this.Top + button1.Top + button1.Height; IColorPalette pColorPalette = new ColorPalette(); pColorPalette.TrackPopupMenu(ref pTag, pColor, false, 0); pColor = pColorPalette.Color; }
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效果：

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●·●实现：获取控件的屏幕位置（两种方法）：

第一种：将控件坐标转换为屏幕坐标！

pTag.left = button1.PointToScreen(System.Drawing.Point.Empty).X;
pTag.bottom = button1.PointToScreen(System.Drawing.Point.Empty).Y + button1.Height;

第二种：通过空间之间属性的间接计算！注：button1 在 groupBox2 中！

pTag.left = SystemInformation.FrameBorderSize.Width + this.Left + groupBox2.Left + button1.Left;
pTag.bottom = (this.Height - this.ClientRectangle.Height - SystemInformation.FrameBorderSize.Height) + this.Top + groupBox2.Top + button1.Top + button1.Height;

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●·●IColorSelector 接口：

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2. ColorSelector：

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IColor pColor = new RgbColor();
pColor.RGB = 255;
IColorSelector pSelector = new ColorSelectorClass(); pSelector.Color = pColor; if (pSelector.DoModal(0)) { pColor = pSelector.Color; }
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效果：

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●·●IColorBrowser 接口：

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3. ColorBrowser：

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IColor pColor = new RgbColor();
pColor.RGB = 255;
IColorBrowser pColorBrowser = new ColorBrowser(); pColorBrowser.Color = pColor; if (pColorBrowser.DoModal(0)) { pColor = pColorBrowser.Color; }
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效果：

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●·●实现：颜色台（Color Ramp）：

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●·●IAlgorithmicColorRamp 接口：

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1. AlgorithmicColorRamp：

定义函数：

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private IEnumColors CreateColorRamp(IColor fromColor,IColor toColor,int count)
{
    IAlgorithmicColorRamp pRampColor = new AlgorithmicColorRamp();
    pRampColor.FromColor = fromColor; pRampColor.ToColor = toColor; pRampColor.Size = count; bool ok = false; pRampColor.CreateRamp(out ok); if (ok) { return pRampColor.Colors; } else { return null; } }
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调用函数：颜色在 red 和 violet 之间变化！

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private void timer1_Tick(object sender, EventArgs e)
{
    IRgbColor fromColor = new RgbColor(); fromColor.Red = 255; IRgbColor toColor = new RgbColor(); toColor.Red = 128; toColor.Blue = 255; IEnumColors pEnumColors = CreateColorRamp(fromColor, toColor, 50); IColor pColor = null; for (int i = 0; i < count;i++ ) { pColor = pEnumColors.Next(); } if (count == 50) { count = 0; timer1.Enabled = false; timer2.Enabled = true; } count++; axPageLayoutControl1.PageLayout.Page.BackgroundColor = pColor; } private void timer2_Tick(object sender, EventArgs e) { IRgbColor fromColor = new RgbColor(); fromColor.Red = 128; fromColor.Blue = 255; IRgbColor toColor = new RgbColor(); toColor.Red = 255; IEnumColors pEnumColors = CreateColorRamp(fromColor, toColor, 20); IColor pColor = null; for (int i = 0; i < count; i++) { pColor = pEnumColors.Next(); } if (count == 20) { count = 0; timer2.Enabled = false; timer1.Enabled = true; } count++; axPageLayoutControl1.PageLayout.Page.BackgroundColor = pColor; }
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●·●IRandomColorRamp 接口：

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2. RandomColorRamp：

定义函数：

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private IColor CreateRandomColorRamp()
{
    IRandomColorRamp pRandomColor = new RandomColorRamp();
    pRandomColor.StartHue = 140; pRandomColor.EndHue = 220; pRandomColor.MinValue = 35; pRandomColor.MaxValue = 100; pRandomColor.MinSaturation = 32; pRandomColor.MaxSaturation = 100; pRandomColor.Size = 12; pRandomColor.Seed = 7; bool ok = true; pRandomColor.CreateRamp(out ok); IEnumColors pEnumColors = pRandomColor.Colors; IColor pColor = pEnumColors.Next(); return pColor; }
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调用函数

private void button5_Click(object sender, EventArgs e)
{
    IColor pColor = CreateRandomColorRamp();
    axPageLayoutControl2.PageLayout.Page.BackgroundColor = pColor; }

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●·●实现：Symbol 对象：

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●·●ISimpleMarkerSymbol 接口：

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1. SimpleMarkerSymbol：

新建工具！

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using System;
using System.Drawing;
using System.Runtime.InteropServices; using ESRI.ArcGIS.ADF.BaseClasses; using ESRI.ArcGIS.ADF.CATIDs; using ESRI.ArcGIS.Controls; using System.Windows.Forms; using ESRI.ArcGIS.Display; using ESRI.ArcGIS.Geometry; namespace Symbol { /// <summary> /// Summary description for Tool1. /// </summary> [Guid("63835a8e-ae77-4817-b4e4-3b120b5232f9")] [ClassInterface(ClassInterfaceType.None)] [ProgId("Symbol.Tool1")] public sealed class Tool1 : BaseTool { #region COM Registration Function(s) [ComRegisterFunction()] [ComVisible(false)] static void RegisterFunction(Type registerType) { // Required for ArcGIS Component Category Registrar support  ArcGISCategoryRegistration(registerType); // // TODO: Add any COM registration code here //  } [ComUnregisterFunction()] [ComVisible(false)] static void UnregisterFunction(Type registerType) { // Required for ArcGIS Component Category Registrar support  ArcGISCategoryUnregistration(registerType); // // TODO: Add any COM unregistration code here //  } #region ArcGIS Component Category Registrar generated code /// <summary> /// Required method for ArcGIS Component Category registration - /// Do not modify the contents of this method with the code editor. /// </summary> private static void ArcGISCategoryRegistration(Type registerType) { string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID); ControlsCommands.Register(regKey); } /// <summary> /// Required method for ArcGIS Component Category unregistration - /// Do not modify the contents of this method with the code editor. /// </summary> private static void ArcGISCategoryUnregistration(Type registerType) { string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID); ControlsCommands.Unregister(regKey); } #endregion #endregion //--------------------------------------------------------------------------------------------------------- private IHookHelper m_hookHelper = null; private IMapControl4 pMapControl; //--------------------------------------------------------------------------------------------------------- public Tool1() { // // TODO: Define values for the public properties // base.m_category = "Marker"; //localizable text base.m_caption = "Marker"; //localizable text base.m_message = "Marker"; //localizable text base.m_toolTip = "Marker"; //localizable text base.m_name = "Marker"; //unique id, non-localizable (e.g. "MyCategory_MyTool") try { // // TODO: change resource name if necessary // string bitmapResourceName = GetType().Name + ".bmp"; base.m_bitmap = new Bitmap(GetType(), bitmapResourceName); base.m_cursor = new System.Windows.Forms.Cursor(GetType(), GetType().Name + ".cur"); } catch (Exception ex) { System.Diagnostics.Trace.WriteLine(ex.Message, "Invalid Bitmap"); } } #region Overriden Class Methods /// <summary> /// Occurs when this tool is created /// </summary> /// <param name="hook">Instance of the application</param> public override void OnCreate(object hook) { if (m_hookHelper == null) m_hookHelper = new HookHelperClass(); m_hookHelper.Hook = hook; //--------------------------------------------------------------------------------------------------------- if (hook is IMapControl4) { pMapControl = hook as IMapControl4; } //--------------------------------------------------------------------------------------------------------- // TODO: Add Tool1.OnCreate implementation } /// <summary> /// Occurs when this tool is clicked /// </summary> public override void OnClick() { // TODO: Add Tool1.OnClick implementation } public override void OnMouseDown(int Button, int Shift, int X, int Y) { // TODO: Add Tool1.OnMouseDown implementation //--------------------------------------------------------------------------------------------------------- ISimpleMarkerSymbol pMarkerSymbol = new SimpleMarkerSymbol(); pMarkerSymbol.Style = esriSimpleMarkerStyle.esriSMSCross; pMarkerSymbol.Color = GetColor(255, 0, 0); pMarkerSymbol.Size = 16; pMarkerSymbol.Outline = true; pMarkerSymbol.OutlineSize = 4; pMarkerSymbol.OutlineColor = GetColor(0, 255, 0); IPoint pPoint = pMapControl.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y); object oMarkerSymbol = pMarkerSymbol; pMapControl.DrawShape(pPoint, ref oMarkerSymbol); //--------------------------------------------------------------------------------------------------------- } //--------------------------------------------------------------------------------------------------------- private IRgbColor GetColor(int r,int g,int b) { IRgbColor pColor = new RgbColor(); pColor.Red = r; pColor.Green = g; pColor.Blue = b; return pColor; } //--------------------------------------------------------------------------------------------------------- public override void OnMouseMove(int Button, int Shift, int X, int Y) { // TODO: Add Tool1.OnMouseMove implementation } public override void OnMouseUp(int Button, int Shift, int X, int Y) { // TODO: Add Tool1.OnMouseUp implementation } #endregion } }
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调用：

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        private void button1_Click(object sender, EventArgs e)
        {
            ICommand command = new Symbol.Tool1(); command.OnCreate(axMapControl1.Object); axMapControl1.CurrentTool = command as ESRI.ArcGIS.SystemUI.ITool; }
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●·●IArrowMarkerSymbol 接口：

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2. ArrowMarkerSymbol：

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public override void OnMouseDown(int Button, int Shift, int X, int Y) { // TODO: Add AddArrow.OnMouseDown implementation IArrowMarkerSymbol pArrowMarkerSymbol = new ArrowMarkerSymbol(); pArrowMarkerSymbol.Style = esriArrowMarkerStyle.esriAMSPlain; pArrowMarkerSymbol.Color = GetColor(55, 111, 255); pArrowMarkerSymbol.Length = 20; pArrowMarkerSymbol.Angle = 90; pArrowMarkerSymbol.Width = 10; IPoint pPoint = pMapControl.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y); object symbol = pArrowMarkerSymbol; pMapControl.DrawShape(pPoint, ref symbol); }
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●·●ICharacterMarkerSymbol 接口：

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●·●stdole.StdFont：

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3. CharacterMarkerSymbol：

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public override void OnMouseDown(int Button, int Shift, int X, int Y) { // TODO: Add Character.OnMouseDown implementation stdole.StdFont pFont = new stdole.StdFont(); //新建字体！ pFont.Name = "ESRI Default Marker"; pFont.Size = 37; pFont.Italic = true; ICharacterMarkerSymbol pCharacterSymbol = new CharacterMarkerSymbol(); pCharacterSymbol.CharacterIndex = 60; pCharacterSymbol.Color = GetColor(0, 0, 255); pCharacterSymbol.Size = 25; IPoint pPoint = pMapControl.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y); object oCharMarkerSymbol = pCharacterSymbol; pMapControl.DrawShape(pPoint, ref oCharMarkerSymbol); }
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●·●IPictureMarkerSymbol 接口：

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4. PictureMarkerSymbol：

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public override void OnMouseDown(int Button, int Shift, int X, int Y) { 　　 // TODO: Add Character.OnMouseDown implementation 　　 IPictureMarkerSymbol pPictureSymbol = new PictureMarkerSymbol(); pPictureSymbol.CreateMarkerSymbolFromFile(esriIPictureType.esriIPictureBitmap, @"F:\Desktop\1.bmp"); pPictureSymbol.Size = 80; pPictureSymbol.BitmapTransparencyColor = GetColor(255, 255, 255); IPoint pPoint = pMapControl1.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(e.x, e.y); object oMarkerSymbol = pPictureSymbol; pMapControl1.DrawShape(pPoint, ref oMarkerSymbol); }
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●·●实现：显示图层的属性窗口：

首先新建 Command，下面是实现代码的重要部分！

 

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private bool SetupFeaturePropertySheet(ILayer layer)
{
    if (layer == null) return false; ESRI.ArcGIS.Framework.IComPropertySheet pComPropSheet; pComPropSheet = new ESRI.ArcGIS.Framework.ComPropertySheet(); pComPropSheet.Title = layer.Name + " - 属性"; ESRI.ArcGIS.esriSystem.UID pPPUID = new ESRI.ArcGIS.esriSystem.UIDClass(); pComPropSheet.AddCategoryID(pPPUID); // General.... ESRI.ArcGIS.Framework.IPropertyPage pGenPage = new ESRI.ArcGIS.CartoUI.GeneralLayerPropPageClass(); pComPropSheet.AddPage(pGenPage); // Source ESRI.ArcGIS.Framework.IPropertyPage pSrcPage = new ESRI.ArcGIS.CartoUI.FeatureLayerSourcePropertyPageClass(); pComPropSheet.AddPage(pSrcPage); // Selection... ESRI.ArcGIS.Framework.IPropertyPage pSelectPage = new ESRI.ArcGIS.CartoUI.FeatureLayerSelectionPropertyPageClass(); pComPropSheet.AddPage(pSelectPage); // Display.... ESRI.ArcGIS.Framework.IPropertyPage pDispPage = new ESRI.ArcGIS.CartoUI.FeatureLayerDisplayPropertyPageClass(); pComPropSheet.AddPage(pDispPage); // Symbology.... ESRI.ArcGIS.Framework.IPropertyPage pDrawPage = new ESRI.ArcGIS.CartoUI.LayerDrawingPropertyPageClass(); pComPropSheet.AddPage(pDrawPage); // Fields... ESRI.ArcGIS.Framework.IPropertyPage pFieldsPage = new ESRI.ArcGIS.CartoUI.LayerFieldsPropertyPageClass(); pComPropSheet.AddPage(pFieldsPage); // Definition Query... ESRI.ArcGIS.Framework.IPropertyPage pQueryPage = new ESRI.ArcGIS.CartoUI.LayerDefinitionQueryPropertyPageClass(); pComPropSheet.AddPage(pQueryPage); // Labels.... ESRI.ArcGIS.Framework.IPropertyPage pSelPage = new ESRI.ArcGIS.CartoUI.LayerLabelsPropertyPageClass(); pComPropSheet.AddPage(pSelPage); // Joins & Relates.... ESRI.ArcGIS.Framework.IPropertyPage pJoinPage = new ESRI.ArcGIS.ArcMapUI.JoinRelatePageClass(); pComPropSheet.AddPage(pJoinPage); // Setup layer link ESRI.ArcGIS.esriSystem.ISet pMySet = new ESRI.ArcGIS.esriSystem.SetClass(); pMySet.Add(layer); pMySet.Reset(); // make the symbology tab active pComPropSheet.ActivePage = 4; // show the property sheet bool bOK = pComPropSheet.EditProperties(pMySet, 0); m_activeView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, m_activeView.Extent); return (bOK); }
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完整实现的 Command 代码如下：

View Code

 

效果如下所示：

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●·●实现：PageLayoutControl 的样式设置：

Border：

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IActiveView pActiveView = axPageLayoutControl1.PageLayout as IActiveView;
IMap pMap = pActiveView.FocusMap;
IGraphicsContainer pGraphicsContainer = pActiveView as IGraphicsContainer;
IMapFrame pMapFrame = pGraphicsContainer.FindFrame(pMap) as IMapFrame; IStyleSelector pStyleSelector = new BorderSelector(); if (pStyleSelector.DoModal(axPageLayoutControl1.hWnd)) { IBorder PBorder = pStyleSelector.GetStyle(0) as IBorder; pMapFrame.Border = PBorder; } axPageLayoutControl1.Refresh(esriViewDrawPhase.esriViewBackground, null, null);
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Background：

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IActiveView pActiveView = axPageLayoutControl1.PageLayout as IActiveView;
IMap pMap = pActiveView.FocusMap;
IGraphicsContainer pGraphicsContainer = pActiveView as IGraphicsContainer;
IMapFrame pMapFrame = pGraphicsContainer.FindFrame(pMap) as IMapFrame; IStyleSelector pStyleSelector = new BackgroundSelector(); if (pStyleSelector.DoModal(axPageLayoutControl1.hWnd)) { IBackground pBackground = pStyleSelector.GetStyle(0) as IBackground; pMapFrame.Background = pBackground; } pActiveView.Refresh();
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Shadow：

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IActiveView pActiveView = axPageLayoutControl1.PageLayout as IActiveView;
IMap pMap = pActiveView.FocusMap;
IGraphicsContainer pGraphicsContainer = pActiveView as IGraphicsContainer;
IMapFrame pMapFrame = pGraphicsContainer.FindFrame(pMap) as IMapFrame; IStyleSelector pStyleSelector = new ShadowSelector(); if (pStyleSelector.DoModal(axPageLayoutControl1.hWnd)) { IShadow pShadow = pStyleSelector.GetStyle(0) as IShadow; IFrameProperties pFrameProperties = pMapFrame as IFrameProperties; pFrameProperties.Shadow = pShadow; } pActiveView.Refresh();
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MapGrid：

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IActiveView pActiveView = axPageLayoutControl1.PageLayout as IActiveView;
IMap pMap = pActiveView.FocusMap;
IGraphicsContainer pGraphicsContainer = pActiveView as IGraphicsContainer;
IMapFrame pMapFrame = pGraphicsContainer.FindFrame(pMap) as IMapFrame; IStyleSelector pStyleSelector = new MapGridSelector(); if (pStyleSelector.DoModal(axPageLayoutControl1.hWnd)) { IMapGrid pMapGrid = pStyleSelector.GetStyle(0) as IMapGrid; IMapGrids pMapGrids = pMapFrame as IMapGrids; if (pMapGrid == null) { return; } pMapGrids.AddMapGrid(pMapGrid); } pActiveView.Refresh();
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●·●实现：删除shapefile文件中的重复数据：

第一种情况，只是出现重复数据，那么可以通过判断某一个字段值是否一样来进行删除重复的部分，实现如下：

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IFeatureLayer pFeatureLayer = axMapControl1.get_Layer(0) as IFeatureLayer;
IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;
IFeatureCursor pFeatureCursor = pFeatureClass.Search(null, false);
IFeature pFeature = pFeatureCursor.NextFeature();
int count = 1; while (pFeature != null) { string name = pFeature.get_Value(pFeatureClass.FindField("Name")).ToString(); //首先获取Name字段的名称属性 while (pFeature != null) //外层遍历 { pFeature = pFeatureCursor.NextFeature(); //开始检查下一个要素与目标要素的关系 if (pFeature == null) //若已经没有了，则终止 break; //跳出 string findName = pFeature.get_Value(pFeatureClass.FindField("Name")).ToString(); if (findName == name) //若名称相同，则删除此要素 pFeature.Delete(); } pFeatureCursor = pFeatureClass.Search(null, false); //重新从头开始 for (int i = 0; i <= count;i++ ) //为了获取比上一个目标要素下一个的目标，通过count来遍历 pFeature = pFeatureCursor.NextFeature(); count++; //每执行一次操作，增加一次count }
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第二种情况，不仅出现某些属性，例如Name相同，但是几何体不是相同的，其中的一部分是残缺的，这个时候就要动用Area了，因为只有最大的那个Area才是完整的，因此要删除掉其他小的部分，可以按照如下实现：

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IFeatureLayer pFeatureLayer = axMapControl1.get_Layer(0) as IFeatureLayer;
IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;
IFeatureCursor pFeatureCursor = pFeatureClass.Search(null, false);
IFeature pFeature = pFeatureCursor.NextFeature();
int count = 1; while (pFeature != null) { string name = pFeature.get_Value(pFeatureClass.FindField("Name")).ToString(); //首先获取Name字段的名称属性 double area = Convert.ToDouble(pFeature.get_Value(pFeatureClass.FindField("Area"))); //获取Area的大小 while (pFeature != null) //外层遍历 { pFeature = pFeatureCursor.NextFeature(); //开始检查下一个要素与目标要素的关系 if (pFeature == null) //若已经没有了，则在从头开始 { pFeatureCursor = pFeatureClass.Search(null, false); //重新从头开始 pFeature = pFeatureCursor.NextFeature(); } string findName = pFeature.get_Value(pFeatureClass.FindField("Name")).ToString(); double findArea = Convert.ToDouble(pFeature.get_Value(pFeatureClass.FindField("Area"))); if (findName == name && findArea < area) //若名称相同，且面积小的时候才删除，大的话就pass pFeature.Delete(); else if (findName == name && findArea == area) //要是相同，则说明又碰到自己了，证明已经一圈过去了 break; } pFeatureCursor = pFeatureClass.Search(null, false); //重新从头开始 for (int i = 0; i <= count;i++ ) //为了获取比上一个目标要素下一个的目标，通过count来遍历 pFeature = pFeatureCursor.NextFeature(); count++; //每执行一次操作，增加一次count }
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实现的代码可能不是最好的，是自己写的，要是数据很乱，就连最大的也是重复的，那就比较乱了，可以先试着下面的，将小的尽量删光，然后在用上面的将重复的删光！

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●·●实现：MapControl 与 PageLayoutControl 的交互：

在 MapControl 和 PageLayoutControl 中进行关联！

首先要认清一点，虽然 MapControl 和 PageLayoutControl 中都有 ActiveView 属性，但是同样的属性在两者中表示的含义不同，在 MapControl 中，ActiveView 与 FocusMap 基本是同样的含义，是针对当前地图的；而 PageLayoutControl 中，ActiveView 指的是当前的布局图，并非 FocusMap，所以对于 MapControl 与 PageLayoutControl 之间的关联要用到 PageLayoutControl 中的 FocusMap，而非 ActiveView，对于 MapControl 则无所谓。它们之间的不同，可以通过显示其 Width 属性来实现，如下所示：

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private void button2_Click(object sender, EventArgs e)
{
    label1.Text = axPageLayoutControl1.ActiveView.Extent.Width.ToString();
    IActiveView pActiveView = axPageLayoutControl1.ActiveView.FocusMap as IActiveView;
    label2.Text = pActiveView.Extent.Width.ToString();
}

private void button3_Click(object sender, EventArgs e) { label3.Text = axMapControl1.ActiveView.Extent.Width.ToString(); label4.Text = (axMapControl1.ActiveView.FocusMap as IActiveView).Extent.Width.ToString(); }
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显示如下：

由此可见，PageLayoutControl 的 ActiveView 是独树一帜的！

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//当地图替换的时候触发

        private void axMapControl1_OnMapReplaced(object sender, IMapControlEvents2_OnMapReplacedEvent e)
        {
            IObjectCopy pObjectCopy = new ObjectCopy();
            object copyMap = axMapControl1.Map;
            object overWriteMap = axPageLayoutControl1.ActiveView.FocusMap; pObjectCopy.Overwrite(copyMap, ref overWriteMap); } //当布局的地图发生变化的时候触发，将 axPageLayoutControl 中地图的范围传递给 axMapControl private void axPageLayoutControl1_OnAfterScreenDraw(object sender, IPageLayoutControlEvents_OnAfterScreenDrawEvent e) { IActiveView activeView = axPageLayoutControl1.ActiveView.FocusMap as IActiveView; IDisplayTransformation displayTransformation = activeView.ScreenDisplay.DisplayTransformation; axMapControl1.Extent = displayTransformation.VisibleBounds; axMapControl1.ActiveView.Refresh(); } //当地图控件的范围发生变化时，将 axMapControl 中地图的范围传递给axPageLayoutControl private void axMapControl1_OnAfterDraw(object sender, IMapControlEvents2_OnAfterDrawEvent e) { IActiveView activeView = axPageLayoutControl1.ActiveView.FocusMap as IActiveView; IDisplayTransformation displayTransformation = activeView.ScreenDisplay.DisplayTransformation; displayTransformation.VisibleBounds = axMapControl1.Extent; axPageLayoutControl1.ActiveView.Refresh(); }
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另外，在 PageLayoutControl 中要想操作地图，还是要用到地图中的放大、缩小等工具，而要操作 PageLayoutControl 的框架时，则要用 PageLayout 的放大、缩小等工具！

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●·●实现：制作可以浮动的工具栏：

第一步：导入一个类文件包，如下所示：

文件包下载>>>点击下载<<<

  • 在 项目 上右键选择 新建项》文件夹，命名为“rpaulo”，貌似是作者的名字！
  • 再在 此文件夹 下添加另外一个文件夹，命名为“toolbar”。
  • 然后 通过 添加》现有项，导航到文件夹中的 *.cs 和 *.resx 文件，将其全部倒入。

第二步：可以写代码了：

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using rpaulo.toolbar;            //添加引用

ToolBarManager _toolBarManager;
_toolBarManager = new ToolBarManager(this, this); //新建工具管理 // The control Text property is used to draw the bar name while floating // and on view/hide menu. _toolBar1.Text = "Bar #1"; _toolBar2.Text = "Bar #2"; _toolBar3.Text = "Bar #3"; _toolBar4.Text = "Bar #4"; // Add toolbar (default position) _toolBarManager.AddControl(_toolBar1); // Add toolbar (floating) _toolBarManager.AddControl(_toolBar2, DockStyle.None); // Add toolbar (left) _toolBarManager.AddControl(_toolBar3, DockStyle.Left); // Add toolbar (left, on the left of _toolBar3) _toolBarManager.AddControl(_toolBar4, DockStyle.Left, _toolBar3, DockStyle.Left); // Add control ToolBarDockHolder holder = _toolBarManager.AddControl(_dateTimePicker, DockStyle.Bottom); // Added by mav holder.ToolbarTitle = "Appointment"; holder.AllowedBorders = AllowedBorders.Top|AllowedBorders.Bottom; _toolBarManager.AddControl(toolBar1, DockStyle.Right);
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  • 可以将所有的控件都加进去，都可以实现浮动的效果，但是 toolbar 可以根据“左右上下”进行调整，移动到左右的时候自动变成垂直工具条！
  • 可能默认的情况没有 ToolBar 控件，可以在 工具箱 上点击右键，选择 选择项，找到后，选中即可使用了！

效果图：

最重要的是那些代码了，调用其实很容易的！

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●·●实现：ArcGIS Engine 实现鹰眼 & 分析：

主要用到两个 MapControl 的事件：

　　1> OnExtentUpdated：实现地图范围变化时触发。

　　2> OnMouseDown：鼠标单击的时候触发。

第一步：实现 TrackRectangle 方法，通过拖拽矩形来放大地图。

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        private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)
        {
            IEnvelope pEnv = axMapControl1.TrackRectangle();
            axMapControl1.Extent = pEnv;   
        }
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第二步：实现信息从 MapControl1 传递到 MapControl2 中。

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        private void axMapControl1_OnExtentUpdated(object sender, IMapControlEvents2_OnExtentUpdatedEvent e)
        {
　　　　//实现鹰眼的方框的 symbol 部分
            ILineSymbol outLineSymbol = new SimpleLineSymbol();　　//设置鹰眼图中的红线！ outLineSymbol.Width = 2; outLineSymbol.Color = GetColor(255, 0, 0, 255); IFillSymbol fillSymbol = new SimpleFillSymbol();　　//设置填充符号的属性！ fillSymbol.Color = GetColor(255, 0, 0, 0); 　　//设置完全透明色 fillSymbol.Outline = outLineSymbol; 　　　　//实现信息传递 IEnvelope envlope2 = e.newEnvelope as IEnvelope;　　//定义新的信封范围，赋值为拖拽的矩形，或是extent IElement element2 = new RectangleElement();　　//定义一个要素，用在后面放在容器中显示应眼框 element2.Geometry = envlope2;　　//给矩形要素赋值上面的信封范围 IFillShapeElement fillShapeElement2 = element2 as IFillShapeElement;　　//具有 symbol 属性！ fillShapeElement2.Symbol = fillSymbol;　　//赋值上面定义的 symbol IGraphicsContainer graphicsContainer2 = axMapControl2.Map as IGraphicsContainer;　　//定义存储图形的容器 graphicsContainer2.DeleteAllElements();　　　　　　　　　　　　//首先删除当前的全部图形，也就是上一次的鹰眼框 pElement = fillShapeElement2 as IElement;　　//将 fillShapeElement2 在转为 IElement，以为后面方法只能用这个类型！ graphicsContainer2.AddElement(pElement, 0);　　//增加新的鹰眼框 axMapControl2.Refresh(esriViewDrawPhase.esriViewGeography, null, null);　　//刷新 MapControl2  } private IRgbColor GetColor(int r, int g, int b, int t)　　//定义获取颜色的函数 { IRgbColor rgbColor = new RgbColor(); rgbColor.Red = r; rgbColor.Green = g; rgbColor.Blue = b; rgbColor.Transparency = (byte)t;　　//透明度 return rgbColor; }
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第三步：实现点击 MapControl2 响应鹰眼框的移动。

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        private void axMapControl2_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)
        {
            IPoint point = new ESRI.ArcGIS.Geometry.Point();　　//定义地理点
            point.PutCoords(e.mapX, e.mapY);　　　　//获取点击的地理点
            axMapControl1.CenterAt(point);　　
        }
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效果显示：

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●·●实现：独立窗口的鹰眼显示：

№1：建立独立显示的窗体 Overview，在窗体中加入一个 MapControl 控件！

注意：将 axMapControl1 的 modifier 设置为 public，这样在主窗体中才可以调用！

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public partial class Overview : Form
{
    IMapControl4 m_mapControl;　　//建立用于显示主窗体 MapControl 的实例！
    IMap m_map;
    public Overview(IHookHelper hook)　　//添加参数，用于与主窗体中 MapControl 相关联！ { InitializeComponent(); m_mapControl = hook.Hook as IMapControl4;　　//从 hook 中获取主窗体的 MapControl！ m_map = m_mapControl.Map; } private void Overview_Load(object sender, EventArgs e) { for (int i = m_map.LayerCount - 1; i >= 0;i-- ) { axMapControl1.AddLayer(m_mapControl.get_Layer(i)); } axMapControl1.Extent = m_mapControl.FullExtent; } private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e) { IPoint centerPoint = new ESRI.ArcGIS.Geometry.Point(); centerPoint.PutCoords(e.mapX, e.mapY);  m_mapControl.CenterAt(centerPoint); } }
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№2：在主窗体中写入交互内容！

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private Overview pOverview2;　　//实例化一个鹰眼窗口

private void button2_Click(object sender, EventArgs e) { HookHelper hookHelper = new HookHelper();　　//新建 HookHelper 的实例！ hookHelper.Hook = axMapControl2.Object;　　//将主窗体的 axMapControl1 赋值给其属性 Hook，实现关联！ pOverview2 = new Overview(hookHelper);　　//实例化一个鹰眼窗体，并将 hookHelper 传递过去！ pOverview2.Show();　　//窗体显示！ } private void axMapControl2_OnExtentUpdated(object sender, IMapControlEvents2_OnExtentUpdatedEvent e) { IEnvelope pEnv = e.newEnvelope as IEnvelope;　　//获取矩形 IGraphicsContainer pGraphicsContainer = pOverview2.axMapControl1.Map as IGraphicsContainer;　　//在鹰眼窗体上建立容器 IActiveView pActiveView = pGraphicsContainer as IActiveView;　　//用于刷新的 pGraphicsContainer.DeleteAllElements();　　//删除所有图形 ISimpleLineSymbol pSimpleLineSymbol = new SimpleLineSymbol();　　//新建线状样式 IRgbColor pColor = new RgbColor(); pColor.Red = 255; pSimpleLineSymbol.Width = 1; pSimpleLineSymbol.Color = pColor; ISimpleFillSymbol pSimpleFillSymbol = new SimpleFillSymbol();　　//新建填充样式 IRgbColor pColor2 = new RgbColor(); pColor2.Transparency = 0; pSimpleFillSymbol.Color = pColor2; pSimpleFillSymbol.Outline = pSimpleLineSymbol; IElement pElement = new RectangleElement();　　//新建元素，用于后面添加到地图上面的 pElement.Geometry = pEnv;　　//给元素赋予几何（矩形）属性，因为不具有 Symbol 属性，所以还要 QI 一下 IFillShapeElement pFillShapeElement = pElement as IFillShapeElement;　　//用于赋予 symbol 的内容 pFillShapeElement.Symbol = pSimpleFillSymbol; pElement = pFillShapeElement as IElement;　　//后面方法中只能用 IElement，所以在转回来！ pGraphicsContainer.AddElement(pElement,0);　　//添加元素，实现鹰眼效果 pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);　　//刷新，这是刷新的鹰眼窗体！ }
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效果如下图所示：

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╠════╣第G9个 ╠══════════════════════════════════════════════════╣
╚════════╝

●·●实现：自定义工具窗口：

---------------------------------------------------------------------------------------------------------

●·●ICustomizeDialog 接口：

　　Members

Description

Method CloseDialog Closes the customize dialog.
Read/write property CommandsCategory The GUID of the component category used for commands.
Read/write property DialogTitle The title of the customize dialog.
Read-only property DoubleClickDestination The ToolbarControl commands are added to when double clicked.
Read-only property IsDialogActive Indicates if the customize dialog is active on the screen.
Read/write property MenusCategory The GUID of the component category used for menu definitions.
Method SetDoubleClickDestination Sets the ToolbarControl commands are added to when double clicked.
Read/write property ShowAddFromFile Indicates if the 'Add From File' button is available on the customize dialog.
Method StartDialog Starts the modeless customize dialog.
Read/write property ToolbarsCategory The GUID of the component category used for toolbar definitions.

---------------------------------------------------------------------------------------------------------

●·●ICustomizeDialogEvents 接口：

　　Members

Description

Event OnCloseDialog Fires when customize dialog is closed or exited.
Event OnStartDialog Fires when customize dialog is displayed on screen.

---------------------------------------------------------------------------------------------------------

首先：定义窗口实例和委托实例！对于 ArcObjects 来说属性方法放在一个接口中，事件放在另外一个接口中！

ICustomizeDialog m_CustomizeDialog = new CustomizeDialogClass();     //自定义对话框实例
ICustomizeDialogEvents_OnStartDialogEventHandler startDialogE;           //开始对话框委托，通过事件可以找到需要事件的委托类型！
ICustomizeDialogEvents_OnCloseDialogEventHandler closeDialogE;　　  //关闭对话框委托

其次：定义函数！

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private void OnStartDialogHandler()
{
    basicToolbarControl.Customize = true;       //工具条控件允许自定义工具
}
private void OnCloseDialogHandler() { basicToolbarControl.Customize = false; 　　//工具条控件不允许自定义工具 chkCustomize.Checked = false;　　　　　　//将复选框的√去掉 }
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最后：实现事件！在 Form_Load 中写的！

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// Set the customize dialog box events.
ICustomizeDialogEvents_Event pCustomizeDialogEvent = m_CustomizeDialog as ICustomizeDialogEvents_Event;　　//ICustomizeDialog 不具有事件，所以要查询到有事件的接口
startDialogE = new ICustomizeDialogEvents_OnStartDialogEventHandler(OnStartDialogHandler);　　//实例化开始委托 pCustomizeDialogEvent.OnStartDialog += startDialogE;　　//用开始委托实现开始事件 closeDialogE = new ICustomizeDialogEvents_OnCloseDialogEventHandler(OnCloseDialogHandler);　　//实例化关闭委托 pCustomizeDialogEvent.OnCloseDialog += closeDialogE;　　//用关闭委托实现关闭事件 // Set the title. m_CustomizeDialog.DialogTitle = "定制工具条";　　//标题！ // Set the ToolbarControl that new items will be added to. m_CustomizeDialog.SetDoubleClickDestination(basicToolbarControl);　　//双击工具加到工具条控件中！
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另外是与复选框的交互！

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private void chkCustomize_CheckedChanged(object sender, EventArgs e)
{
    if (chkCustomize.Checked == false) { m_CustomizeDialog.CloseDialog();　　//关闭自定义对话框 } else { m_CustomizeDialog.StartDialog(basicToolbarControl.hWnd);　　//弹出自定义对话框 } }
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╔════════╗
╠════╣第U1个 ╠══════════════════════════════════════════════════╣
╚════════╝

●·●实现：Map 与 PageLayout 切换后工具不变：

实现在切换前后，对于Map的工具恢复到之前的工具，而PageLayoutControl也是一样的！

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ITool pMapTool = null;　　//定义存储map的工具
ITool pPageLayoutTool = null;　　//定义存储pagelayout的工具
private void tabControl1_SelectedIndexChanged(object sender, EventArgs e) { if (tabControl1.SelectedIndex == 0) { if (axPageLayoutControl1.CurrentTool != null)　　//如果有工具则赋值，在没有转换buddy之前 pPageLayoutTool = axPageLayoutControl1.CurrentTool; axToolbarControl1.SetBuddyControl(axMapControl1); if (axMapControl1.CurrentTool == null)　　//理论上讲默认都是null，然后给其赋值刚才的工具！ axMapControl1.CurrentTool = pMapTool; } else { if (axMapControl1.CurrentTool != null) pMapTool = axMapControl1.CurrentTool; axToolbarControl1.SetBuddyControl(axPageLayoutControl1); if (axPageLayoutControl1.CurrentTool == null) axPageLayoutControl1.CurrentTool = pPageLayoutTool; } }
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╔════════╗
╠════╣第U2个 ╠══════════════════════════════════════════════════╣
╚════════╝

●·●实现：在窗体中显示渐变颜色 & 通过名称找控件：

实现效果：

实现代码如下：

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private void button1_Click(object sender, EventArgs e)
{
    IAlgorithmicColorRamp algColorRamp = new AlgorithmicColorRampClass(); IRgbColor startColor = new RgbColor(); startColor.Red = 255; IRgbColor endColor = new RgbColor(); endColor.Green = 255; algColorRamp.FromColor = startColor; algColorRamp.ToColor = endColor; algColorRamp.Algorithm = esriColorRampAlgorithm.esriCIELabAlgorithm; algColorRamp.Size = 32; bool bture = true; algColorRamp.CreateRamp(out bture); IEnumColors pEnumColors = algColorRamp.Colors; for (int i = 1; i <= 32;i++ ) { object o; PictureBox pb;
        o=this.GetType().GetField("pictureBox" + i.ToString(), BindingFlags.Instance | BindingFlags.NonPublic).GetValue(this);　　//通过控件名称来找控件的方法
if (o != null)
        {
            pb = (PictureBox)o;
            pb.BackColor = ColorTranslator.FromOle(pEnumColors.Next().RGB);
        }
    }
}
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自己定义 pictureBox，实现如下：

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for (int i = 1; i <= 50;i++ )
{
    PictureBox pb = new PictureBox(); pb.Height = 10; pb.Width = 500; pb.Location = new System.Drawing.Point(10, i * 12); panel1.Controls.Add(pb); pb.BackColor = ColorTranslator.FromOle(pEnumColors.Next().RGB); }
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╔════════╗
╠════╣第U3个 ╠══════════════════════════════════════════════════╣
╚════════╝

●·●实现：获取地图是否处于编辑状态：

引言：在操作地图的时候，可能某人设置了，左键可以实现拉框放大，中键和右键怎可以实现漫游，但是若是这样设置，当图层处于编辑状态的时候就糟糕了！因为操作会重叠，这个时候就需要判断图层是否处于编辑状态，只有处于非编辑状态的时候才要执行上面的方法！

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IFeatureLayer pFeatureLayer = axMapControl1.Map.get_Layer(0) as IFeatureLayer;　　//获取 IFeatureLayer
IDataset pDataset =(IDataset) pFeatureLayer.FeatureClass;　　　　　　　　　　//获取 IDataset
IWorkspaceEdit pWorkspaceEdit = (IWorkspaceEdit) pDataset.Workspace;　　//获取 IWorkspaceEdit if (pWorkspaceEdit.IsBeingEdited()) { 　　//可以编辑状态 }
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●·●IDataset 接口：

 

●·●IWorkspaceEdit 接口：

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╔════════╗
╠════╣第U4个 ╠══════════════════════════════════════════════════╣
╚════════╝

●·●实现：获取地图是否处于编辑状态：

引言：在操作地图的时候，可能某人设置了，左键可以实现拉框

-------------------------------------------------------------------------------------------------------

╔════════╗
╠════╣第U5个 ╠══════════════════════════════════════════════════╣
╚════════╝

●·●实现：获取地图是否处于编辑状态：

引言：在操作地图的时候，可能某人设置了，左键可以实现拉框

 

 

 

没有整理与归纳的知识，一文不值！高度概括与梳理的知识，才是自己真正的知识与技能。 永远不要让自己的自由、好奇、充满创造力的想法被现实的框架所束缚，让创造力自由成长吧！ 多花时间，关心他（她）人，正如别人所关心你的。理想的腾飞与实现，没有别人的支持与帮助，是万万不能的。








    本文转自wenglabs博客园博客，原文链接：http://www.cnblogs.com/arxive/p/7194766.html ，如需转载请自行联系原作者




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