ArcGIS Engine Maplex Label（标注）使用一例

Maplex类型标注是AE标注的其中一种方式，现提供一简单使用例子

  
    

   
      1 
   
     ///
   
      
   
     <summary>
   
     

   
      2 
   
      
   
     ///
   
      MaplexEngine标注

   
      3 
   
      
   
     ///
   
      
   
     </summary>
   
     

   
      4 
   
      
   
     ///
   
      
   
     <param name="pGeoFeatLyr">
   
     标注图层
   
     </param>
   
     

   
      5 
   
      
   
     ///
   
      
   
     <param name="pMap">
   
     地球人都知
   
     </param>
   
     

   
      6 
   
      
   
     ///
   
      
   
     <param name="annoField">
   
     标记字段
   
     </param>
   
     

   
      7 
   
      
   
      
   
     public
   
      
   
     void
   
      Annotation(IGeoFeatureLayer pGeoFeatLyr, IMap pMap, 
   
     string
   
      annoField)

   
      8 
   
      {

   
      9 
   
      IAnnotateMap pAnnoMap;

   
     10 
   
      pAnnoMap 
   
     =
   
      
   
     new
   
      MaplexAnnotateMapClass();

   
     11 
   
      pMap.AnnotationEngine 
   
     =
   
      pAnnoMap;

   
     12 
   
      IGeoFeatureLayer pGeoFeatLayer;

   
     13 
   
      pGeoFeatLayer 
   
     =
   
      pGeoFeatLyr;

   
     14 
   
      IAnnotateLayerPropertiesCollection pAnnoProps;

   
     15 
   
      pAnnoProps 
   
     =
   
      pGeoFeatLyr.AnnotationProperties;

   
     16 
   
      pAnnoProps.Clear();

   
     17 
   
      ILabelEngineLayerProperties2 pLabelEngine2 
   
     =
   
      
   
     new
   
      MaplexLabelEngineLayerPropertiesClass();

   
     18 
   
      pLabelEngine2.Expression 
   
     =
   
      
   
     "
   
     [
   
     "
   
      
   
     +
   
      annoField 
   
     +
   
      
   
     "
   
     ]
   
     "
   
     ;

   
     19 
   
      

   
     20 
   
      IMaplexOverposterLayerProperties pMaplexPro 
   
     =
   
      
   
     new
   
      MaplexOverposterLayerPropertiesClass();

   
     21 
   
      pMaplexPro.FeatureType 
   
     =
   
      esriBasicOverposterFeatureType.esriOverposterPolygon;

   
     22 
   
      pMaplexPro.PolygonPlacementMethod 
   
     =
   
      esriMaplexPolygonPlacementMethod.esriMaplexHorizontalInPolygon;

   
     23 
   
      pMaplexPro.CanPlaceLabelOutsidePolygon 
   
     =
   
      
   
     false
   
     ;

   
     24 
   
      pMaplexPro.CanRemoveOverlappingLabel 
   
     =
   
      
   
     false
   
     ;

   
     25 
   
      pMaplexPro.RepeatLabel 
   
     =
   
      
   
     false
   
     ;

   
     26 
   
      pLabelEngine2.OverposterLayerProperties 
   
     =
   
      pMaplexPro 
   
     as
   
      IOverposterLayerProperties;

   
     27 
   
      IMapOverposter pMapPos 
   
     =
   
      axMapControl1.Map 
   
     as
   
      IMapOverposter;

   
     28 
   
      IOverposterProperties pOP 
   
     =
   
      pMapPos.OverposterProperties;

   
     29 
   
      IMaplexOverposterProperties pMaplexOP 
   
     =
   
      pOP 
   
     as
   
      IMaplexOverposterProperties;

   
     30 
   
      pMaplexOP.LabelLargestPolygon 
   
     =
   
      
   
     false
   
     ;

   
     31 
   
      pAnnoProps.Add(pLabelEngine2 
   
     as
   
      IAnnotateLayerProperties);

   
     32 
   
      pGeoFeatLyr.DisplayAnnotation 
   
     =
   
      
   
     true
   
     ;

   
     33 
   
      }