初探GIS Mapxtreme 添加自定义图元 bmp

添加自定义 图元，将bmp 放入 C:\Program Files\Common Files\MapInfo\MapXtreme\6.8.0\CustSymb目录下

这个 6.8.0 是版本号。

     /// <summary>
     /// 添加自定义图元
      /// </summary>
     /// <param name="dPoint">点坐标</param>
     public void AddCustomFeature(DPoint dPoint)
     {
         TableInfoMemTable tableInfoMemTable = new TableInfoMemTable("temp");
         tableInfoMemTable.Columns.Add(ColumnFactory.CreateFeatureGeometryColumn(map.GetDisplayCoordSys()));
         tableInfoMemTable.Columns.Add(ColumnFactory.CreateStyleColumn());//样式列
          Table table = MapInfo.Engine.Session.Current.Catalog.CreateTable(tableInfoMemTable);
         FeatureLayer featureLayer = new FeatureLayer(table);
         map.Layers.Add(featureLayer);

         FeatureGeometry featureGeometry = new MapInfo.Geometry.Point(featureLayer.CoordSys, dPoint);
         BitmapPointStyle bitmapPointStyle = new BitmapPointStyle("chinaz2.BMP", BitmapStyles.None, new System.Drawing.Color(), 25);
         CompositeStyle compositeStyle = new CompositeStyle(bitmapPointStyle);

         Feature feature = new Feature(featureLayer.Table.TableInfo.Columns);
         feature.Geometry = featureGeometry;
         feature.Style = compositeStyle;

         featureLayer.Table.InsertFeature(feature);
     }