轉自：http://xitong.iteye.com/blog/1715759

ArcEngine 一些實現代碼

●·● 目錄：

A1 …………實現：鼠標滑過顯示要素 tip
A2 …………實現：通過鼠標選擇要素并高亮顯示（ISelectionEnvironment）
A3 …………實現：只顯示篩選的要素（IFeatureLayerDefinition）
A4 …………實現：高亮顯示篩選的要素（IFeatureSelection）
A5 …………實現：類似 ArcMap 中 Identify 工具的效果（IIdentify、IArray、IIdentifyObj）
A6 …………實現：在 MapControl 上繪制幾何圖形
　　　　 　　實現：在 MapControl 上繪制幾何圖形（IGraphicsContainer，幾何：圓）

A7 …………實現：在 MapControl 自由旋轉地圖（IScreenDisplay [RotateMoveTo]）
　　實現：在 MapControl 中鼠標與地圖反向移動（IScreenDisplay [PanMoveTo]）

A8 …………實現：彈出顏色選擇器（IColorPalette、IColorSelector、IColorBrowser）
　　　　 　　實現：獲取控件的屏幕位置（兩種方法）

A9 …………實現：實現：Symbol 對象（ISimpleMarkerSymbol、Arrow、Character、Picture）

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G1 …………實現：Symbol 對象
G2 …………實現：顯示圖層的屬性窗口
G3 …………實現：PageLayoutControl 的樣式設置（IBorder、IBackground、IShadow、IMapGrid）
G4 …………實現：刪除shapefile文件中的重復數據
G5 …………實現：MapControl 與 PageLayoutControl 的交互
G6 …………實現：制作可以浮動的工具欄
G7 …………實現：ArcGIS Engine 實現鷹眼 & 分析（IGraphicsContainer、IFillShapeElement）
G8 …………實現：獨立窗口的鷹眼顯示（IHookHelper）
G9 …………實現：自定義工具窗口（ICustomizeDialog、ICustomizeDialogEvents）

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U1 …………實現：Map 與 PageLayout 切換后工具不變
U2 …………實現：在窗體中顯示漸變顏色 & 根據名稱獲取控件（IAlgorithmicColorRamp、IEnumColor）
U3 …………實現：獲取地圖是否處于編輯狀態（IDataset、IWorkspaceEdit）
U4 …………實現：獲取地圖是否處于編輯狀態
U5 …………實現：獲取地圖是否處于編輯狀態

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●·●實現：鼠標滑過顯示要素 tip：

對于這個有兩個方法：

第一種：通過將 axmapcontrol 自帶的 ShowMapTips 屬性設置為 true 來實現。

第二種：通過 .NET 自帶的控件 ToolTip 來實現！

第一種代碼：

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; }

第二種代碼：

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, "名稱：" + pTip); } else //當 ToolTip 空間顯示的內容為 null 的時候，就不會顯示了！相當于隱藏了！ { toolTip1.SetToolTip(axMapControl1, ""); } }

以上兩種方法都可以實現顯示標注，但是第二種效果更好一點~！

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●·●實現：通過鼠標選擇要素并高亮顯示：

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●·●ISelectionEnvironment 接口：

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通過 IMap 接口的 SelectByShape 方法來實現！同時可以修改高亮顯示的顏色！

private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e){axMapControl1.MousePointer = esriControlsMousePointer.esriPointerDefault;IMap pMap = axMapControl1.Map;IGeometry pGeometry = axMapControl1.TrackRectangle(); //獲取框選幾何ISelectionEnvironment pSelectionEnv = new SelectionEnvironment(); //新建選擇環境IRgbColor pColor = new RgbColor();pColor.Red = 255; pSelectionEnv.DefaultColor = pColor; //設置高亮顯示的顏色！ pMap.SelectByShape(pGeometry, pSelectionEnv, false); //選擇圖形！ axMapControl1.Refresh(esriViewDrawPhase.esriViewGeoSelection, null, null); }

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●·●實現：只顯示篩選的要素：

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●·●IFeatureLayerDefinition 接口：

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1. 通過 IFeatureLayerDefinition 接口的 DefinitionExpression 屬性可以實現！

IFeatureLayer pFeatureLayer = axMapControl1.Map.get_Layer(0) as IFeatureLayer; IFeatureLayerDefinition pFeatLyrDef = pFeatureLayer as IFeatureLayerDefinition; //新建 IFeatureLayerDefinition 接口實例 pFeatLyrDef.DefinitionExpression = "Area > 20";　　//定義篩選條件 axMapControl1.ActiveView.Refresh();　　//刷新

這樣便只顯示符合要求的部分了！即面積大于20的要素！

2. 通過 IFeatureLayerDefinition 接口的 CreatSelectionLayer 方法可以通過篩選建立新圖層！

IFeatureLayer pFeatureLayer = axMapControl1.Map.get_Layer(0) as IFeatureLayer; IFeatureLayerDefinition pFeatLyrDef = pFeatureLayer as IFeatureLayerDefinition; pFeatLyrDef.DefinitionExpression = "Area > 20"; axMapControl1.ActiveView.Refresh(); //重新定義的圖層 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);　　//在新定義圖層的基礎上進行的查詢 IFeatureLayer pNewFeat = pFeatLyrDef.CreateSelectionLayer("New Layer", true, null, null);　　//新建的圖層包括上面兩者的交集部分！ pFeatSel.Clear(); axMapControl1.Map.AddLayer(pNewFeat); MessageBox.Show(axMapControl1.Map.LayerCount.ToString());

首先是建立一個虛擬的新圖層，然后在此新圖層的基礎上進行篩選，然后從而生成新的圖層！

參考：http://blog.csdn.net/qinyilang/article/details/6575539
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●·●實現：高亮顯示篩選的要素：

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●·●IFeatureSelection 接口：

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通過 IFeatureSelection 接口的 SelectFeatures 方法可以實現！

IFeatureLayer pFeatureLayer = axMapControl1.Map.get_Layer(0) as IFeatureLayer;
IQueryFilter pQueryFilter = new QueryFilter();　　//建立查詢 pQueryFilter.WhereClause = "POP > 10"; IFeatureSelection pFeatSel = pFeatureLayer as IFeatureSelection;　　//新建 IFeatureSelection 接口實例 pFeatSel.SelectFeatures(pQueryFilter, esriSelectionResultEnum.esriSelectionResultNew, false);　　//實現方法，選擇篩選的部分！ axMapControl1.Refresh(esriViewDrawPhase.esriViewGeoSelection, null, null);

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●·●實現：類似 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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主要實現點擊查詢并閃爍顯示，并把查詢要素的信息通過DataGridView顯示出來，主要用到的接口：IIdentity、IArray、IIdentifyObj

IIdentify pIdentify = axMapControl1.Map.get_Layer(0) as IIdentify; //通過圖層獲取 IIdentify 實例 IPoint pPoint = new ESRI.ArcGIS.Geometry.Point(); //新建點來選擇 IArray pIDArray; IIdentifyObj pIdObj;pPoint.PutCoords(e.mapX, e.mapY); //定義點 pIDArray = pIdentify.Identify(pPoint); //通過點獲取數組，用點一般只能選擇一個元素 if (pIDArray != null) {pIdObj = pIDArray.get_Element(0) as IIdentifyObj; //取得要素 pIdObj.Flash(axMapControl1.ActiveView.ScreenDisplay); //閃爍效果 MessageBox.Show("Layer: " + pIdObj.Layer.Name + "\n" + "Feature: " + pIdObj.Name); //輸出信息 } else { MessageBox.Show("Nothing!"); }

效果：

框選實現如下所示：

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!"); }

效果如下：

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

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●·●實現：在 MapControl 上繪制幾何圖形：

可以直接使用 axMapControl1.DrawShape 方法來實現~！

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);

也可以通過 IScreenDisplay 接口的方法來實現！~

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();

通過比較，只是后面實現的部分不同，前面都是相同的！

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●·●實現：在 MapControl 上繪制幾何圖形（IGraphicsContainer，幾何：圓）：

　　普通的圖形，可以直接向下面一樣實現！

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);

　　畫圓比較特殊，因為沒有圓這個現成的幾何體，因此要轉換，如下所示：

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();　　　　//空的多邊形 ISegmentCollection pSegmentCollection = pPolygon as ISegmentCollection;　　//段集合 ISegment pSegment = pCircle as ISegment;　　//將圓賦值給段 object missing = Type.Missing;　　//顯示默認值 pSegmentCollection.AddSegment(pSegment, ref missing, ref missing);　　//給空多邊形加入圓 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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●·●實現：在 MapControl 自由旋轉地圖：

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●·●IScreenDisplay 接口：

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通過 IScreenDisplay 接口來實現！

//鼠標按下！ 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); //獲取圖像的中心位置 axMapControl1.ActiveView.ScreenDisplay.RotateStart(pPoint, pCentrePoint); //開始旋轉 } //鼠標移動！ private void axMapControl1_OnMouseMove(object sender, IMapControlEvents2_OnMouseMoveEvent e) {IPoint pPoint = new PointClass();pPoint.PutCoords(e.mapX, e.mapY);axMapControl1.ActiveView.ScreenDisplay.RotateMoveTo(pPoint); //旋轉到鼠標的位置 axMapControl1.ActiveView.ScreenDisplay.RotateTimer(); //可以忽略 } //鼠標抬起！ private void axMapControl1_OnMouseUp(object sender, IMapControlEvents2_OnMouseUpEvent e) {double dRotationAngle = axMapControl1.ActiveView.ScreenDisplay.RotateStop(); //獲取旋轉的角度 axMapControl1.Rotation = dRotationAngle; //賦值給 axMapControl1.Rotation，這下真的旋轉了！ axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null); //刷新！ }

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●·●實現：在 MapControl 中鼠標與地圖反向移動：

double startMapX = 0; double startMapY = 0; IScreenDisplay pScreenDisplay; private void Form1_Load(object sender, EventArgs e)　　//窗體加載信息 { pScreenDisplay = axMapControl1.ActiveView.ScreenDisplay; } private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)　　//鼠標按下的時候觸發 { 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)　　//鼠標移動的時候觸發 { IPoint pPoint = new PointClass(); pPoint.PutCoords(startMapX * 2 - e.mapX, startMapY * 2 - e.mapY); //獲取當前點關于起始點的對稱點 pScreenDisplay.PanMoveTo(pPoint); } private void axMapControl1_OnMouseUp(object sender, IMapControlEvents2_OnMouseUpEvent e)　　　　//鼠標松開的時候觸發 { pScreenDisplay.PanStop(); }

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●·●實現：彈出顏色選擇器：

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●·●IColorPalette 接口：

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1. ColorPalette：

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; }

效果：

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●·●實現：獲取控件的屏幕位置（兩種方法）：

第一種：將控件坐標轉換為屏幕坐標！

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

第二種：通過空間之間屬性的間接計算！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：

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

效果：

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●·●IColorBrowser 接口：

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3. ColorBrowser：

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

效果：

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●·●實現：顏色臺（Color Ramp）：

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●·●IAlgorithmicColorRamp 接口：

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1. AlgorithmicColorRamp：

定義函數：

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; } }

調用函數：顏色在 red 和 violet 之間變化！

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：

定義函數：

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; }

調用函數

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

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●·●實現：Symbol 對象：

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●·●ISimpleMarkerSymbol 接口：

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1. SimpleMarkerSymbol：

新建工具！

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 } }

調用：

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：

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：

public override void OnMouseDown(int Button, int Shift, int X, int Y) { // TODO: Add Character.OnMouseDown implementation stdole.StdFont pFont = new stdole.StdFont(); //新建字體！ 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：

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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●·●實現：顯示圖層的屬性窗口：

首先新建 Command，下面是實現代碼的重要部分！

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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 + " - 屬性"; 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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完整實現的 Command 代碼如下：

View Code

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效果如下所示：

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●·●實現：PageLayoutControl 的樣式設置：

Border：

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：

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：

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：

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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●·●實現：刪除shapefile文件中的重復數據：

第一種情況，只是出現重復數據，那么可以通過判斷某一個字段值是否一樣來進行刪除重復的部分，實現如下：

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(); //首先獲取Name字段的名稱屬性 while (pFeature != null) //外層遍歷 { pFeature = pFeatureCursor.NextFeature(); //開始檢查下一個要素與目標要素的關系 if (pFeature == null) //若已經沒有了，則終止 break; //跳出 string findName = pFeature.get_Value(pFeatureClass.FindField("Name")).ToString(); if (findName == name) //若名稱相同，則刪除此要素 pFeature.Delete(); } pFeatureCursor = pFeatureClass.Search(null, false); //重新從頭開始 for (int i = 0; i <= count;i++ ) //為了獲取比上一個目標要素下一個的目標，通過count來遍歷 pFeature = pFeatureCursor.NextFeature(); count++; //每執行一次操作，增加一次count }

第二種情況，不僅出現某些屬性，例如Name相同，但是幾何體不是相同的，其中的一部分是殘缺的，這個時候就要動用Area了，因為只有最大的那個Area才是完整的，因此要刪除掉其他小的部分，可以按照如下實現：

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(); //首先獲取Name字段的名稱屬性 double area = Convert.ToDouble(pFeature.get_Value(pFeatureClass.FindField("Area"))); //獲取Area的大小 while (pFeature != null) //外層遍歷 { pFeature = pFeatureCursor.NextFeature(); //開始檢查下一個要素與目標要素的關系 if (pFeature == null) //若已經沒有了，則在從頭開始 { pFeatureCursor = pFeatureClass.Search(null, false); //重新從頭開始 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) //若名稱相同，且面積小的時候才刪除，大的話就pass pFeature.Delete(); else if (findName == name && findArea == area) //要是相同，則說明又碰到自己了，證明已經一圈過去了 break; } pFeatureCursor = pFeatureClass.Search(null, false); //重新從頭開始 for (int i = 0; i <= count;i++ ) //為了獲取比上一個目標要素下一個的目標，通過count來遍歷 pFeature = pFeatureCursor.NextFeature(); count++; //每執行一次操作，增加一次count }

實現的代碼可能不是最好的，是自己寫的，要是數據很亂，就連最大的也是重復的，那就比較亂了，可以先試著下面的，將小的盡量刪光，然后在用上面的將重復的刪光！

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●·●實現：MapControl 與 PageLayoutControl 的交互：

在 MapControl 和 PageLayoutControl 中進行關聯！

首先要認清一點，雖然 MapControl 和 PageLayoutControl 中都有 ActiveView 屬性，但是同樣的屬性在兩者中表示的含義不同，在 MapControl 中，ActiveView 與 FocusMap 基本是同樣的含義，是針對當前地圖的；而 PageLayoutControl 中，ActiveView 指的是當前的布局圖，并非 FocusMap，所以對于 MapControl 與 PageLayoutControl 之間的關聯要用到 PageLayoutControl 中的 FocusMap，而非 ActiveView，對于 MapControl 則無所謂。它們之間的不同，可以通過顯示其 Width 屬性來實現，如下所示：

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(); }

顯示如下：

由此可見，PageLayoutControl 的 ActiveView 是獨樹一幟的！

//當地圖替換的時候觸發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); } //當布局的地圖發生變化的時候觸發，將 axPageLayoutControl 中地圖的范圍傳遞給 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(); } //當地圖控件的范圍發生變化時，將 axMapControl 中地圖的范圍傳遞給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(); }

另外，在 PageLayoutControl 中要想操作地圖，還是要用到地圖中的放大、縮小等工具，而要操作 PageLayoutControl 的框架時，則要用 PageLayout 的放大、縮小等工具！

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●·●實現：制作可以浮動的工具欄：

第一步：導入一個類文件包，如下所示：

文件包下載>>>點擊下載<<<

• 在 項目 上右鍵選擇 新建項》文件夾，命名為“rpaulo”，貌似是作者的名字！
• 再在 此文件夾 下添加另外一個文件夾，命名為“toolbar”。
• 然后 通過 添加》現有項，導航到文件夾中的 *.cs 和 *.resx 文件，將其全部倒入。

第二步：可以寫代碼了：

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);

• 可以將所有的控件都加進去，都可以實現浮動的效果，但是 toolbar 可以根據“左右上下”進行調整，移動到左右的時候自動變成垂直工具條！
• 可能默認的情況沒有 ToolBar 控件，可以在 工具箱 上點擊右鍵，選擇 選擇項，找到后，選中即可使用了！

效果圖：

最重要的是那些代碼了，調用其實很容易的！

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●·●實現：ArcGIS Engine 實現鷹眼 & 分析：

主要用到兩個 MapControl 的事件：

　　1> OnExtentUpdated：實現地圖范圍變化時觸發。

　　2> OnMouseDown：鼠標單擊的時候觸發。

第一步：實現 TrackRectangle 方法，通過拖拽矩形來放大地圖。

private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e){IEnvelope pEnv = axMapControl1.TrackRectangle();axMapControl1.Extent = pEnv; }

第二步：實現信息從 MapControl1 傳遞到 MapControl2 中。

private void axMapControl1_OnExtentUpdated(object sender, IMapControlEvents2_OnExtentUpdatedEvent e){//實現鷹眼的方框的 symbol 部分ILineSymbol outLineSymbol = new SimpleLineSymbol();　　//設置鷹眼圖中的紅線！ outLineSymbol.Width = 2; outLineSymbol.Color = GetColor(255, 0, 0, 255); IFillSymbol fillSymbol = new SimpleFillSymbol();　　//設置填充符號的屬性！ fillSymbol.Color = GetColor(255, 0, 0, 0); 　　//設置完全透明色 fillSymbol.Outline = outLineSymbol; 　　　　//實現信息傳遞 IEnvelope envlope2 = e.newEnvelope as IEnvelope;　　//定義新的信封范圍，賦值為拖拽的矩形，或是extent IElement element2 = new RectangleElement();　　//定義一個要素，用在后面放在容器中顯示應眼框 element2.Geometry = envlope2;　　//給矩形要素賦值上面的信封范圍 IFillShapeElement fillShapeElement2 = element2 as IFillShapeElement;　　//具有 symbol 屬性！ fillShapeElement2.Symbol = fillSymbol;　　//賦值上面定義的 symbol IGraphicsContainer graphicsContainer2 = axMapControl2.Map as IGraphicsContainer;　　//定義存儲圖形的容器 graphicsContainer2.DeleteAllElements();　　　　　　　　　　　　//首先刪除當前的全部圖形，也就是上一次的鷹眼框 pElement = fillShapeElement2 as IElement;　　//將 fillShapeElement2 在轉為 IElement，以為后面方法只能用這個類型！ graphicsContainer2.AddElement(pElement, 0);　　//增加新的鷹眼框 axMapControl2.Refresh(esriViewDrawPhase.esriViewGeography, null, null);　　//刷新 MapControl2 } private IRgbColor GetColor(int r, int g, int b, int t)　　//定義獲取顏色的函數 { IRgbColor rgbColor = new RgbColor(); rgbColor.Red = r; rgbColor.Green = g; rgbColor.Blue = b; rgbColor.Transparency = (byte)t;　　//透明度 return rgbColor; }

第三步：實現點擊 MapControl2 響應鷹眼框的移動。

private void axMapControl2_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e){IPoint point = new ESRI.ArcGIS.Geometry.Point();　　//定義地理點point.PutCoords(e.mapX, e.mapY);　　　　//獲取點擊的地理點axMapControl1.CenterAt(point);　　}

效果顯示：

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●·●實現：獨立窗口的鷹眼顯示：

№1：建立獨立顯示的窗體 Overview，在窗體中加入一個 MapControl 控件！

注意：將 axMapControl1 的 modifier 設置為 public，這樣在主窗體中才可以調用！

public partial class Overview : Form {IMapControl4 m_mapControl;　　//建立用于顯示主窗體 MapControl 的實例！IMap m_map;public Overview(IHookHelper hook)　　//添加參數，用于與主窗體中 MapControl 相關聯！ { InitializeComponent(); m_mapControl = hook.Hook as IMapControl4;　　//從 hook 中獲取主窗體的 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); } }

№2：在主窗體中寫入交互內容！

private Overview pOverview2;　　//實例化一個鷹眼窗口private void button2_Click(object sender, EventArgs e) { HookHelper hookHelper = new HookHelper();　　//新建 HookHelper 的實例！ hookHelper.Hook = axMapControl2.Object;　　//將主窗體的 axMapControl1 賦值給其屬性 Hook，實現關聯！ pOverview2 = new Overview(hookHelper);　　//實例化一個鷹眼窗體，并將 hookHelper 傳遞過去！ pOverview2.Show();　　//窗體顯示！ } private void axMapControl2_OnExtentUpdated(object sender, IMapControlEvents2_OnExtentUpdatedEvent e) { IEnvelope pEnv = e.newEnvelope as IEnvelope;　　//獲取矩形 IGraphicsContainer pGraphicsContainer = pOverview2.axMapControl1.Map as IGraphicsContainer;　　//在鷹眼窗體上建立容器 IActiveView pActiveView = pGraphicsContainer as IActiveView;　　//用于刷新的 pGraphicsContainer.DeleteAllElements();　　//刪除所有圖形 ISimpleLineSymbol pSimpleLineSymbol = new SimpleLineSymbol();　　//新建線狀樣式 IRgbColor pColor = new RgbColor(); pColor.Red = 255; pSimpleLineSymbol.Width = 1; pSimpleLineSymbol.Color = pColor; ISimpleFillSymbol pSimpleFillSymbol = new SimpleFillSymbol();　　//新建填充樣式 IRgbColor pColor2 = new RgbColor(); pColor2.Transparency = 0; pSimpleFillSymbol.Color = pColor2; pSimpleFillSymbol.Outline = pSimpleLineSymbol; IElement pElement = new RectangleElement();　　//新建元素，用于后面添加到地圖上面的 pElement.Geometry = pEnv;　　//給元素賦予幾何（矩形）屬性，因為不具有 Symbol 屬性，所以還要 QI 一下 IFillShapeElement pFillShapeElement = pElement as IFillShapeElement;　　//用于賦予 symbol 的內容 pFillShapeElement.Symbol = pSimpleFillSymbol; pElement = pFillShapeElement as IElement;　　//后面方法中只能用 IElement，所以在轉回來！ pGraphicsContainer.AddElement(pElement,0);　　//添加元素，實現鷹眼效果 pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);　　//刷新，這是刷新的鷹眼窗體！ }

效果如下圖所示：

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●·●實現：自定義工具窗口：

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●·●ICustomizeDialog 接口：

　　Members

Description

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

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●·●ICustomizeDialogEvents 接口：

　　Members

Description

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

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首先：定義窗口實例和委托實例！對于 ArcObjects 來說屬性方法放在一個接口中，事件放在另外一個接口中！

ICustomizeDialog m_CustomizeDialog = new CustomizeDialogClass(); //自定義對話框實例 ICustomizeDialogEvents_OnStartDialogEventHandler startDialogE; //開始對話框委托，通過事件可以找到需要事件的委托類型！ ICustomizeDialogEvents_OnCloseDialogEventHandler closeDialogE;　　 //關閉對話框委托

其次：定義函數！

private void OnStartDialogHandler() {basicToolbarControl.Customize = true; //工具條控件允許自定義工具 } private void OnCloseDialogHandler() { basicToolbarControl.Customize = false; 　　//工具條控件不允許自定義工具 chkCustomize.Checked = false;　　　　　　//將復選框的√去掉 }

最后：實現事件！在 Form_Load 中寫的！

// Set the customize dialog box events. ICustomizeDialogEvents_Event pCustomizeDialogEvent = m_CustomizeDialog as ICustomizeDialogEvents_Event;　　//ICustomizeDialog 不具有事件，所以要查詢到有事件的接口 startDialogE = new ICustomizeDialogEvents_OnStartDialogEventHandler(OnStartDialogHandler);　　//實例化開始委托 pCustomizeDialogEvent.OnStartDialog += startDialogE;　　//用開始委托實現開始事件 closeDialogE = new ICustomizeDialogEvents_OnCloseDialogEventHandler(OnCloseDialogHandler);　　//實例化關閉委托 pCustomizeDialogEvent.OnCloseDialog += closeDialogE;　　//用關閉委托實現關閉事件 // Set the title. m_CustomizeDialog.DialogTitle = "定制工具條";　　//標題！ // Set the ToolbarControl that new items will be added to. m_CustomizeDialog.SetDoubleClickDestination(basicToolbarControl);　　//雙擊工具加到工具條控件中！

另外是與復選框的交互！

private void chkCustomize_CheckedChanged(object sender, EventArgs e) {if (chkCustomize.Checked == false) { m_CustomizeDialog.CloseDialog();　　//關閉自定義對話框 } else { m_CustomizeDialog.StartDialog(basicToolbarControl.hWnd);　　//彈出自定義對話框 } }

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●·●實現：Map 與 PageLayout 切換后工具不變：

實現在切換前后，對于Map的工具恢復到之前的工具，而PageLayoutControl也是一樣的！

ITool pMapTool = null;　　//定義存儲map的工具 ITool pPageLayoutTool = null;　　//定義存儲pagelayout的工具 private void tabControl1_SelectedIndexChanged(object sender, EventArgs e) { if (tabControl1.SelectedIndex == 0) { if (axPageLayoutControl1.CurrentTool != null)　　//如果有工具則賦值，在沒有轉換buddy之前 pPageLayoutTool = axPageLayoutControl1.CurrentTool; axToolbarControl1.SetBuddyControl(axMapControl1); if (axMapControl1.CurrentTool == null)　　//理論上講默認都是null，然后給其賦值剛才的工具！ 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個 ╠══════════════════════════════════════════════════╣
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●·●實現：在窗體中顯示漸變顏色 & 通過名稱找控件：

實現效果：

實現代碼如下：

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);　　//通過控件名稱來找控件的方法 if (o != null){pb = (PictureBox)o;pb.BackColor = ColorTranslator.FromOle(pEnumColors.Next().RGB);}} }

自己定義 pictureBox，實現如下：

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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●·●實現：獲取地圖是否處于編輯狀態：

引言：在操作地圖的時候，可能某人設置了，左鍵可以實現拉框放大，中鍵和右鍵怎可以實現漫游，但是若是這樣設置，當圖層處于編輯狀態的時候就糟糕了！因為操作會重疊，這個時候就需要判斷圖層是否處于編輯狀態，只有處于非編輯狀態的時候才要執行上面的方法！

IFeatureLayer pFeatureLayer = axMapControl1.Map.get_Layer(0) as IFeatureLayer;　　//獲取 IFeatureLayer IDataset pDataset =(IDataset) pFeatureLayer.FeatureClass;　　　　　　　　　　//獲取 IDataset IWorkspaceEdit pWorkspaceEdit = (IWorkspaceEdit) pDataset.Workspace;　　//獲取 IWorkspaceEdit if (pWorkspaceEdit.IsBeingEdited()) { 　　//可以編輯狀態 }

●·●IDataset 接口：

?

●·●IWorkspaceEdit 接口：

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╠════╣第U4個 ╠══════════════════════════════════════════════════╣
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●·●實現：獲取地圖是否處于編輯狀態：

引言：在操作地圖的時候，可能某人設置了，左鍵可以實現拉框

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╔════════╗
╠════╣第U5個 ╠══════════════════════════════════════════════════╣
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●·●實現：獲取地圖是否處于編輯狀態：

轉載于:https://www.cnblogs.com/Joetao/articles/5509622.html

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