ArcGIS Pro做一个矩形选择按钮

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/*      Copyright 2019 Esri      Licensed under the Apache License, Version 2.0 (the "License");    you may not use this file except in compliance with the License.    You may obtain a copy of the License at          http://www.apache.org/licenses/LICENSE-2.0      Unless required by applicable law or agreed to in writing, software    distributed under the License is distributed on an "AS IS" BASIS,    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.      See the License for the specific language governing permissions and    limitations under the License.   */ using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using ArcGIS.Core.Geometry; using ArcGIS.Desktop.Mapping;   namespace MapToolSelect {     internal class MapToolSelect : MapTool     {         public MapToolSelect()         {             IsSketchTool = true;             SketchType = SketchGeometryType.Rectangle;             SketchOutputMode = SketchOutputMode.Screen;         }           protected override Task OnToolActivateAsync(bool active)         {             return base.OnToolActivateAsync(active);         }           protected override Task<bool> OnSketchCompleteAsync(Geometry geometry)         {             return ArcGIS.Desktop.Framework.Threading.Tasks.QueuedTask.Run(() =>             {         // Using the active map view to select         // the features that intersect the sketch geometry         ActiveMapView.SelectFeatures(geometry);                 return true;             });         }     } }

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