C#制作Arcgis Engine鹰眼全过程(引自ESRI中国社区)

1. axMapControl1是主控件，axMapControl2是鹰眼控件

2. 1.鹰眼地图资源载入
3. private void axMapControl1_OnMapReplaced(object sender, IMapControlEvents2_OnMapReplacedEvent e)
4. {
5. //当主地图显示控件的地图更换时，鹰眼中的地图也跟随更换
6. axMapControl2.LoadMxFile(axMapControl1.DocumentFilename);
7. axMapControl2.Extent = axMapControl2.FullExtent;
8. }
9. 2.绘制鹰眼矩形框
10.private void axMapControl1_OnExtentUpdated(object sender, IMapControlEvents2_OnExtentUpdatedEvent e)
11. {
12. // 得到新范围
13. IEnvelope pEnv = (IEnvelope)e.newEnvelope;
14. IGraphicsContainer pGra = axMapControl2.Map as IGraphicsContainer;
15. IActiveView pAv = pGra as IActiveView;
16. //在绘制前，清除axMapControl2中的任何图形元素
17. pGra.DeleteAllElements();
18. IRectangleElement pRectangleEle = new RectangleElementClass();
19. IElement pEle = pRectangleEle as IElement;
20. pEle.Geometry = pEnv;
21. //设置鹰眼图中的红线框
22. IRgbColor pColor = new RgbColorClass();
23. pColor.Red = 255;
24. pColor.Green = 0;
25. pColor.Blue = 0;
26. pColor.Transparency = 255;
27. //产生一个线符号对象
28. ILineSymbol pOutline = new SimpleLineSymbolClass();
29. pOutline.Width = 2;
30. pOutline.Color = pColor;
31. //设置颜色属性
32. pColor = new RgbColorClass();
33. pColor.Red = 255;
34. pColor.Green = 0;
35. pColor.Blue = 0;
36. pColor.Transparency = 0;
37. //设置填充符号的属性
38. IFillSymbol pFillSymbol = new SimpleFillSymbolClass();
39. pFillSymbol.Color = pColor;
40. pFillSymbol.Outline = pOutline;
41. IFillShapeElement pFillShapeEle = pEle as IFillShapeElement;
42. pFillShapeEle.Symbol = pFillSymbol;
43. pGra.AddElement((IElement)pFillShapeEle, 0);
44. pAv.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
45. }
46.3. 实现互动
47. private void axMapControl2_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)
48. {
49. IPoint pPt=new PointClass ();
50. pPt.PutCoords (e.mapX ,e.mapY );
51. //改变主控件的视图范围
52. axMapControl1 .CenterAt (pPt );
53. }