IEngineEditor与IWorkspaceEdit，以及相关的事件监听

转自原文 IEngineEditor与IWorkspaceEdit，以及相关的事件监听

IEngineEditor适用于直接在图层上的编辑，例如使用“要素编辑”工具菜单上的“开始编辑”等工具进行编辑，相应的事件使用IWorkspaceEdit监听，例如以下的代码：

private IEngineEditor m_EngineEditor = new EngineEditorClass();
private IEngineEditEvents_Event m_EngineEditEvents ;
private void MainForm_Load(object sender,EventArgs e)
{
     //get the MapControl
     m_mapControl = (IMapControl3)axMapControl1.Object;
     //disable the Save menu (since there is no document yet)
     menuSaveDoc.Enabled = false;
     m_EngineEditEvents = (IEngineEditEvents_Event)m_EngineEditor;
     m_EngineEditEvents.OnStartEditing += new IEngineEditEvents_OnStartEditingEventHandler(m_EngineEditEvents_OnStartEditing);
}
void m_EngineEditEvents_OnStartEditing()
{
     MessageBox.Show("Start Editing");
}   

IWorkspaceEdit适用于直接对workspace进行的编辑，相应的事件使用IWorkspaceEditEvents_Event监听，例如以下的代码：

private IWorkspaceEdit wsEdit;
private IWorkspaceEditEvents_Event wsEditEvents;
private void MainForm_Load(object sender,EventArgs e)
{
      //get the MapControl
      m_mapControl = (IMapControl3)axMapControl1.Object;
      //disable the Save menu (since there is no document yet)
       menuSaveDoc.Enabled = false;
      wsEdit = MyTool.GetWorkspaceEdit(map1.Map);
      wsEditEvents = (IWorkspaceEditEvents_Event)wsEdit;
      wsEditEvents.OnStopEditing += new IWorkspaceEditEvents_OnStopEditingEventHandler(wsEditEvents_OnStopEditing);
}
void wsEditEvents_OnStopEditing(bool saveEdits)
{
      MessageBox.Show("StopEditing");
}