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【030】◀▶ ArcEngine 一些实现代码

2013年02月02日 ⁄ 综合 ⁄ 共 21043字 ⁄ 字号小中大 ⁄ 评论关闭

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●·● 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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●·● 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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●·● 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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●·● 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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●·● 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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●·● 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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●·● 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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●·● 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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●·● 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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●·● 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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●·● 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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●·● 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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●·● 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 = "

【上篇】javascript事件查询综合
【下篇】基于visual Studio2013解决C语言竞赛题之0525拉丁方阵

作者: arty

该日志由 arty 于11年前发表在综合分类下，最后更新于 2013年02月02日.
转载请注明: 【030】◀▶ ArcEngine 一些实现代码 | 学步园 +复制链接

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学步园

【030】◀▶ ArcEngine 一些实现代码

●·● 目录：

●·● 实现：鼠标滑过显示要素 tip：

●·● 实现：通过鼠标选择要素并高亮显示：

●·● ISelectionEnvironment 接口：

●·● 实现：只显示筛选的要素：

●·● IFeatureLayerDefinition 接口：

●·● 实现：高亮显示筛选的要素：

●·● IFeatureSelection 接口：

●·● 实现：类似 ArcMap 中 Identify 工具的效果：

●·● IIdentify 接口：

●·● IIdentifyObj 接口：

●·● IArray 接口：

●·● 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）：

●·● 实现：在 MapControl 自由旋转地图：

●·● IScreenDisplay 接口：

●·● 实现：在 MapControl 中鼠标与地图反向移动：

●·● 实现：弹出颜色选择器：

●·● IColorPalette 接口：

●·● 实现：获取控件的屏幕位置（两种方法）：

●·● IColorSelector 接口：

●·● IColorBrowser 接口：

●·● 实现：颜色台（Color Ramp）：

●·● IAlgorithmicColorRamp 接口：

●·● IRandomColorRamp 接口：

●·● 实现：Symbol 对象：

●·● ISimpleMarkerSymbol 接口：

作者: arty

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