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：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：为某一要素添加字段内容（IFeature）
U5 ………… 实现：获取地图是否处于编辑状态
U6 ………… 实现：获取地图是否处于编辑状态
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╠════╣ 第A1个 ╠══════════════════════════════════════════════════╣
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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：
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;
}
第二种代码：
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, "");
}
}
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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╠════╣ 第A2个 ╠══════════════════════════════════════════════════╣
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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！
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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╠════╣ 第A3个 ╠══════════════════════════════════════════════════╣
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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！
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());
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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╠════╣ 第A4个 ╠══════════════════════════════════════════════════╣
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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！
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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╠════╣ 第A5个 ╠══════════════════════════════════════════════════╣
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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
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!");
}
效果：
框选实现如下所示：
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：
参考：http://blog.csdn.net/mjhwy/article/details/7337426
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╠════╣ 第A6个 ╠══════════════════════════════════════════════════╣
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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~！
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);
也可以通过 IScreenDisplay 接口的方法来实现！~
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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╠════╣ 第A6A个 ╠══════════════════════════════════════════════════╣
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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！
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);
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：
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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╠════╣ 第A7个 ╠══════════════════════════════════════════════════╣
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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！
//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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╠════╣ 第A7A个 ╠══════════════════════════════════════════════════╣
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●·● 实现：在 MapControl 中鼠标与地图反向移动：
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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╠════╣ 第A8个 ╠══════════════════════════════════════════════════╣
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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：
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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╠════╣ 第A8A个 ╠══════════════════════════════════════════════════╣
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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：
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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╠════╣ 第A9个 ╠══════════════════════════════════════════════════╣
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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：
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;
}
}
调用函数：颜色在 red 和 violet 之间变化！
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：
定义函数：
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;
}
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！
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
}
}
调用：
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;
}
---------------------------------------------------------------------------------------------------------
●·● IArrowMarkerSymbol 接口：
---------------------------------------------------------------------------------------------------------
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);
}
---------------------------------------------------------------------------------------------------------
●·● ICharacterMarkerSymbol 接口：
---------------------------------------------------------------------------------------------------------
●·● stdole.StdFont：
---------------------------------------------------------------------------------------------------------
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);
}
---------------------------------------------------------------------------------------------------------
●·● IPictureMarkerSymbol 接口：
---------------------------------------------------------------------------------------------------------
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);
}
---------------------------------------------------------------------------------------------------------
╔════════╗
╠════╣ 第G2个 ╠══════════════════════════════════════════════════╣
╚════════╝
●·● 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！
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);
}
完整实现的 Command 代码如下：
View Code
效果如下所示：
---------------------------------------------------------------------------------------------------------
╔════════╗
╠════╣ 第G3个 ╠══════════════════════════════════════════════════╣
╚════════╝
●·● 实现：PageLayoutControl 的样式设置：
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);
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();
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();
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();
---------------------------------------------------------------------------------------------------------
╔════════╗
╠════╣ 第G4个 ╠══════════════════════════════════════════════════╣
╚════════╝
●·● 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：
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
}
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：
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
}
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！
---------------------------------------------------------------------------------------------------------
╔════════╗
╠════╣ 第G5个 ╠══════════════════════════════════════════════════╣
╚════════╝
●·● 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：
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();
}
显示如下：
由此可见，PageLayoutControl 的 ActiveView 是独树一帜的！
//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();
}
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！
---------------------------------------------------------------------------------------------------------
╔════════╗
╠════╣ 第G6个 ╠══════════════════════════════════════════════════╣
╚════════╝
●·● 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：
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！
---------------------------------------------------------------------------------------------------------
╔════════╗
╠════╣ 第G7个 ╠══════════════════════════════════════════════════╣
╚════════╝
●·● 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。
private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)
{
IEnvelope pEnv = axMapControl1.TrackRectangle();
axMapControl1.Extent = pEnv;
}
第二步：实现信息从 MapControl1 传递到 MapControl2 中。
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;
}
第三步：实现点击 MapControl2 响应鹰眼框的移动。
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);
}
效果显示：
-------------------------------------------------------------------------------------------------------
╔════════╗
╠════╣ 第G8个 ╠══════════════════════════════════════════════════╣
╚════════╝
●·● 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！
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);
}
}
№2：在主窗体中写入交互内容！
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！
}
效果如下图所示：
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╠════╣ 第G9个 ╠══════════════════════════════════════════════════╣
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●·● 实现：自定义工具窗口：
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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！
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
}
最后：实现事件！在 Form_Load 中写的！
// 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！
另外是与复选框的交互！
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！
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：
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);
}
}
}
自己定义 pictureBox，实现如下：
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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╔════════╗
╠════╣ 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！
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
}
●·● IDataset 接口：
●·● IWorkspaceEdit 接口：
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╔════════╗
╠════╣ 第U4个 ╠══════════════════════════════════════════════════╣
╚════════╝
●·● 实现：为某一要素添加字段内容：
为要素添加字段内容，主要是用到了 set_Value 方法！然后记得用下 Store 方法！
string str001 = ((sender as Button).FindForm() as CheckForm).comboBox1.Text;
//Type字段内容
int int001 = Convert.ToInt32(((sender as Button).FindForm() as CheckForm).tb_Water_Quality.Text);
//Water_Quality字段内容
pDrawFeature.set_Value(pDrawFeature.Fields.FindField("Type"), str001);
pDrawFeature.set_Value(pDrawFeature.Fields.FindField("Water"), int001);
pDrawFeature.Store(); //存储字段内容
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╔════════╗
╠════╣ 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
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╔════════╗
╠════╣ 第U6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
