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：

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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：

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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");

}