博客

1.





axMapControl1


是主控件，


axMapControl2


是鹰眼控件

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