ArcGIS Engine 9.2 实现要素闪烁

 1　public static void FlashGeometry(IGeometry geometry, IScreenDisplay screenDisplay, IRgbColor rgbColor, Int32 delay)
 2        {
 3            if (geometry == null || rgbColor == null || screenDisplay == null)
 4            {
 5                return;
 6            }
 7
 8            screenDisplay.StartDrawing(screenDisplay.hDC, (System.Int16)ESRI.ArcGIS.Display.esriScreenCache.esriNoScreenCache); // Explicit Cast
 9
10            switch (geometry.GeometryType)
11            {
12                case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon:
13                    {
14                        //Set the flash geometry's symbol.
15                        ESRI.ArcGIS.Display.ISimpleFillSymbol simpleFillSymbol = new ESRI.ArcGIS.Display.SimpleFillSymbolClass();
16                        simpleFillSymbol.Color = rgbColor;
17                        ESRI.ArcGIS.Display.ISymbol symbol = simpleFillSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
18                        symbol.ROP2 = ESRI.ArcGIS.Display.esriRasterOpCode.esriROPNotXOrPen;
19
20                        //Flash the input polygon geometry.
21                        screenDisplay.SetSymbol(symbol);
22                        screenDisplay.DrawPolygon(geometry);
23                        System.Threading.Thread.Sleep(delay);
24                        screenDisplay.DrawPolygon(geometry);
25                        break;
26                    }
27
28                case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline:
29                    {
30                        //Set the flash geometry's symbol.
31                        ESRI.ArcGIS.Display.ISimpleLineSymbol simpleLineSymbol = new ESRI.ArcGIS.Display.SimpleLineSymbolClass();
32                        simpleLineSymbol.Width = 4;
33                        simpleLineSymbol.Color = rgbColor;
34                        ESRI.ArcGIS.Display.ISymbol symbol = simpleLineSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
35                        symbol.ROP2 = ESRI.ArcGIS.Display.esriRasterOpCode.esriROPNotXOrPen;
36
37                        //Flash the input polyline geometry.
38                        screenDisplay.SetSymbol(symbol);
39                        screenDisplay.DrawPolyline(geometry);
40                        System.Threading.Thread.Sleep(delay);
41                        screenDisplay.DrawPolyline(geometry);
42                        break;
43                    }
44
45                case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint:
46                    {
47                        //Set the flash geometry's symbol.
48                        ESRI.ArcGIS.Display.ISimpleMarkerSymbol simpleMarkerSymbol = new ESRI.ArcGIS.Display.SimpleMarkerSymbolClass();
49                        simpleMarkerSymbol.Style = ESRI.ArcGIS.Display.esriSimpleMarkerStyle.esriSMSCircle;
50                        simpleMarkerSymbol.Size = 12;
51                        simpleMarkerSymbol.Color = rgbColor;
52                        ESRI.ArcGIS.Display.ISymbol symbol = simpleMarkerSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
53                        symbol.ROP2 = ESRI.ArcGIS.Display.esriRasterOpCode.esriROPNotXOrPen;
54
55                        //Flash the input point geometry.
56                        screenDisplay.SetSymbol(symbol);
57                        screenDisplay.DrawPoint(geometry);
58                        System.Threading.Thread.Sleep(delay);
59                        screenDisplay.DrawPoint(geometry);
60                        break;
61                    }
62
63                case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryMultipoint:
64                    {
65                        //Set the flash geometry's symbol.
66                        ESRI.ArcGIS.Display.ISimpleMarkerSymbol simpleMarkerSymbol = new ESRI.ArcGIS.Display.SimpleMarkerSymbolClass();
67                        simpleMarkerSymbol.Style = ESRI.ArcGIS.Display.esriSimpleMarkerStyle.esriSMSCircle;
68                        simpleMarkerSymbol.Size = 12;
69                        simpleMarkerSymbol.Color = rgbColor;
70                        ESRI.ArcGIS.Display.ISymbol symbol = simpleMarkerSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
71                        symbol.ROP2 = ESRI.ArcGIS.Display.esriRasterOpCode.esriROPNotXOrPen;
72
73                        //Flash the input multipoint geometry.
74                        screenDisplay.SetSymbol(symbol);
75                        screenDisplay.DrawMultipoint(geometry);
76                        System.Threading.Thread.Sleep(delay);
77                        screenDisplay.DrawMultipoint(geometry);
78                        break;
79                    }
80            }
81            screenDisplay.FinishDrawing();
82        }

 

1 public static void FlashFeature2(IScreenDisplay screenDisplay, IFeature feature)
2        {
3            IFeatureIdentifyObj featureIdentifyObj = new ESRI.ArcGIS.CartoUI.FeatureIdentifyObjectClass();
4            featureIdentifyObj.Feature = feature;
5
6            IIdentifyObj identifyObj = featureIdentifyObj as IIdentifyObj;
7            identifyObj.Flash(screenDisplay);
8        }

 

Notice: IFeatureIdentifyObj接口的实例类FeatureIdentifyObjectClass的命名空间和接口的命名空间不同,接口为ESRI.ArcGIS.Carto,而实例类为ESRI.ArcGIS.CartoUI.