MapXtreme使用编辑工具

MapXtreme的工具分为四类：View工具（Zoom、Center、Pan），Select工具（选点、线、面等），Add工具（添点、线、面）及Custom工具，目前需要使用add工具，与使用MapInfo一致，在添加点、线、面时需要创建临时表及临时图层及对工具的过滤，在选择前需要：

   private void PrePareForDraw()
        {
            // first close the temporary table -- an easy way to clean it up
            // (otherwise the table will remain open after the map is cleared)
            MapInfo.Data.Table tblTemp = Session.Current.Catalog.GetTable("Temp");
            if (tblTemp != null) tblTemp.Close();
            //mapControl1.Map.Clear();

            // create a temporary table and add a featurelayer for it
            FeatureLayer layerTemp = new FeatureLayer(
                Session.Current.Catalog.CreateTable(
                TableInfoFactory.CreateTemp("Temp"), new TableSessionInfo()));
            mapControl1.Map.Layers.Add(layerTemp);

            // set the insertion and edit filters to allow all tools to work on Temp
            ToolFilter toolFilter =
                (ToolFilter)mapControl1.Tools.AddMapToolProperties.InsertionLayerFilter;
            if (toolFilter != null && !toolFilter.IncludeLayer(layerTemp))
                toolFilter.SetExplicitInclude(layerTemp, true);
            toolFilter = (ToolFilter)mapControl1.Tools.SelectMapToolProperties.EditableLayerFilter;
            if (toolFilter != null && !toolFilter.IncludeLayer(layerTemp))
                toolFilter.SetExplicitInclude(layerTemp, true);
　　　　　　// setview
            mapControl1.Map.SetView(mapControl1.Map.Center,
                Session.Current.CoordSysFactory.CreateLongLat(DatumID.WGS84),
                mapControl1.Map.Scale);
        }

然后选择添加工具，例如添加多边形：

mapControl1.Tools.LeftButtonTool = "AddPolygon";

画出来的多边形如右图所示：

自定义多边形样式后，先从mapcontrol 的Tools 中去掉默认的添加多边形工具，再添加带自定义多边形样式后的AddPolygon Tool，具体代码为：

 MapInfo.Data.Table tblTemp = Session.Current.Catalog.GetTable("CustomTemp");
            if (tblTemp != null) tblTemp.Close();

            // create a temporary table and add a featurelayer for it
            FeatureLayer layerTemp = new FeatureLayer(
                Session.Current.Catalog.CreateTable(
                TableInfoFactory.CreateTemp("CustomTemp"), new TableSessionInfo()));
            mapControl1.Map.Layers.Add(layerTemp);
            
            
            // Set the map layer filter for the insertion layer.
            IMapLayerFilter insertionLayerFilter = MapLayerFilterFactory.FilterSpecificLayers(layerTemp);


            // Set the default style for the new objects (red fill with blue border).
            CompositeStyle style = new CompositeStyle(
                new MapInfo.Styles.AreaStyle(
                    MapInfo.Styles.StockStyles.BlueLineStyle(),
                    MapInfo.Styles.StockStyles.RedFillStyle()),
                MapInfo.Styles.StockStyles.BlackLineStyle(),
                new MapInfo.Styles.TextStyle(),
                MapInfo.Styles.StockStyles.DefaultSymbol()
                );

            AddMapToolProperties addMapToolProperties = new AddMapToolProperties(
                MapLayerFilterFactory.FilterForTools(mapControl1.Map, insertionLayerFilter,
                MapLayerFilterFactory.FilterVisibleLayers(true),
                "CustomPolygonAddMapToolProperties", null), style);

            // Create an Add polygon tool with non-default properties.
            MapTool maptool = new AddPolygonMapTool(true, mapControl1.Viewer,
                mapControl1.Handle.ToInt32(), mapControl1.Tools,
                new MouseToolProperties(Cursors.Default, Cursors.Default,
                Cursors.Default), mapControl1.Tools.MapToolProperties,
                addMapToolProperties);

           // Remove default AddPolygon Tool then add new AddPolygon Tool 
            if (mapControl1.Tools.ContainsKey("AddPolygon"))
            {
                mapControl1.Tools.Remove("AddPolygon");
            }

            mapControl1.Tools.Add("AddPolygon", maptool);

            mapControl1.Tools.LeftButtonTool = "AddPolygon";

画出多边形如右图所示：