请速马来看看：如何得到ActiveX控件上事件的委托链？即判断控件某个事件的处理方法是否加载。会的大侠们也来看看

Question

我看了您Blog上的文章:
"得到一个委托链上的所有方法?"
http://blog.sunmast.com/sunmast/archive/2005/04/21/1769.aspx我现在也正好碰到这个问题，但我用得不是.net的内部控件，我用得是外部的ActiveX控件，照您的方法不能解决我得问题。比如我用了一个VB6的ListView控件:我在这一句不能得到正确的值EventHandlerList fplist = pEvents.GetValue(this.axListView1,null) as EventHandlerList; 
不知道什么原因。 
求您的解答，谢谢。 其实我的问题就是:如何能知道ActiveX控件上某个事件是否加载了某个事件处理方法，有知道的大侠也来帮我一下。
谢谢大家。

Answer 1

listview的事件可能就不像.net的控件封装入EventHandlerList
http://www.mblogger.cn/web.mblogger.cn/NickChen/posts/19020.htm

Answer 2

我没有用过VB6
如果是用了Interop后的COM，那VS.NET会自动为你生成一个COM的包装，同样在bin目录
同Reflector反编译之，可以看到其事件的实现

Answer 3

如果反编译出来后是这样，那我应该怎样按照你的方法来作啊。我还是没有领会到你的方法的作法。
[Clsid("{bdd1f04b-858b-11d1-b16a-00c0f0283628}"), DesignTimeVisible(true), DefaultEvent("BeforeLabelEdit")]
public class AxListView : AxHost
{
      // Events
      public event ListViewEvents_AfterLabelEditEventHandler AfterLabelEdit;
      public event ListViewEvents_BeforeLabelEditEventHandler BeforeLabelEdit;
      public event EventHandler ClickEvent;
      public event ListViewEvents_ColumnClickEventHandler ColumnClick;
      public event EventHandler DblClick;
      public event ListViewEvents_ItemCheckEventHandler ItemCheck;
      public event ListViewEvents_ItemClickEventHandler ItemClick;
      public event ListViewEvents_KeyDownEventHandler KeyDownEvent;
      public event ListViewEvents_KeyPressEventHandler KeyPressEvent;
      public event ListViewEvents_KeyUpEventHandler KeyUpEvent;
      public event ListViewEvents_MouseDownEventHandler MouseDownEvent;
      public event ListViewEvents_MouseMoveEventHandler MouseMoveEvent;
      public event ListViewEvents_MouseUpEventHandler MouseUpEvent;
      public event ListViewEvents_OLECompleteDragEventHandler OLECompleteDrag;
      public event ListViewEvents_OLEDragDropEventHandler OLEDragDrop;
      public event ListViewEvents_OLEDragOverEventHandler OLEDragOver;
      public event ListViewEvents_OLEGiveFeedbackEventHandler OLEGiveFeedback;
      public event ListViewEvents_OLESetDataEventHandler OLESetData;
      public event ListViewEvents_OLEStartDragEventHandler OLEStartDrag;    
      // Fields
      private ListViewEvents_AfterLabelEditEventHandler AfterLabelEdit;
      private ListViewEvents_BeforeLabelEditEventHandler BeforeLabelEdit;
      private EventHandler ClickEvent;
      private ListViewEvents_ColumnClickEventHandler ColumnClick;
      private AxHost.ConnectionPointCookie cookie;
      private EventHandler DblClick;
      private AxListViewEventMulticaster eventMulticaster;
      private ListViewEvents_ItemCheckEventHandler ItemCheck;
      private ListViewEvents_ItemClickEventHandler ItemClick;
      private ListViewEvents_KeyDownEventHandler KeyDownEvent;
      private ListViewEvents_KeyPressEventHandler KeyPressEvent;
      private ListViewEvents_KeyUpEventHandler KeyUpEvent;
      private ListViewEvents_MouseDownEventHandler MouseDownEvent;
      private ListViewEvents_MouseMoveEventHandler MouseMoveEvent;
      private ListViewEvents_MouseUpEventHandler MouseUpEvent;
      private IListView ocx;
      private ListViewEvents_OLECompleteDragEventHandler OLECompleteDrag;
      private ListViewEvents_OLEDragDropEventHandler OLEDragDrop;
      private ListViewEvents_OLEDragOverEventHandler OLEDragOver;
      private ListViewEvents_OLEGiveFeedbackEventHandler OLEGiveFeedback;
      private ListViewEvents_OLESetDataEventHandler OLESetData;
      private ListViewEvents_OLEStartDragEventHandler OLEStartDrag;
}谢谢啊。

Answer 4

已解决了。
FieldInfo f = (typeof(Axmscomctl.AxListView)).GetField("BeforeLabelEdit",BindingFlags.Instance| BindingFlags.NonPublic);
object key =f.GetValue(this.axListView1);
Delegate b=(Axmscomctl.ListViewEvents_BeforeLabelEditEventHandler)key;
foreach(Delegate g in b.GetInvocationList())
{
   MessageBox.Show(g.Method.Name);
}
谢谢大家。