GIS二次开发第8课.ppt

主讲：张云鹏;第八课 空间数据编辑;8.1 ArcGIS Engine 编辑概述;8.1.1 ArcGIS Engine 编辑与 ArcMap 编辑;要素的复制、剪切、粘贴和删除;ArcGIS Engine环境下的EditorToolbar、Editor Menu and Edit Task:;;撤销（undo） / 重复（redo） ;ArcGIS Engine的“Sketch Tool Context Menu”;ControlToolsEditing_SnapToFeatureMenu;ControlToolsEditing_SketchDirection;ControlToolsEditing_SketchSegmentDeflection;在ArcGIS 桌面环境中的主要编辑对象是Editor ，而在ArcGIS Engine 开发中则是EngineEditor (单实例对象) ;在相应的应用程序中，它们负责管理 edit sketch, current task, current target layer, edit workspace, edit selection, edit session properties, and snap environment. EngineEditor 主要接口：IEngineEditor、IEngineEditLayers、IEngineEditProperties、IEngineEditProperties2、IEngineEditSketch、IEngineSnapEnvironment、 IEngineEditEvents 、IExtension (System);ArcMap Editor主要接口：;the?main editing interfaces;IEngineEditSketch ;IEngineEditProperties ;IEngineEditEvents （New in 9.3）;IEngineEditTask （ new at ArcGIS 9.3 ）;8.1.2 编辑流程;An edit session can be created using IEngineEditor (Controls) or IWorkspaceEdit (Geodatabase). 具体使用场合： Use IWorkspaceEdit to programmatically perform edits in console applications or graphical user interface (GUI)-based applications that dont require any user interaction. Use IEngineEditor for GUI-based editing applications that involve any of the following: Using the out-of-the-box editing commands Working with the edit sketch Controlling the snapping environment Listening to events that are raised while editing ;Edit and sketch operations ;Start an edit session ;private IEngineEditor m_engineEditor = new EngineEditorClass(); private void StartEditing (IMap map, IFeatureLayer featureLayer) { if (m_engineEditor.EditState != esriEngineEditState.esriEngineStateNotEditing) return; IDataset dataset = featureLayer.FeatureClass as IDataset; IWorkspace workspace = dataset.Workspace; m_engineEditor.StartEditing(workspace, map); ((IEngineEditLayers) m_engineEditor). SetTargetLayer(featureLayer, -1); };Edit operations;priva