wx.EVT_TEXT_CUT | wx.EVT_TEXT_COPY | wx_EVT_TEXT_PASTE多次调用而不是只调用一次

Question

我遇到了wx.EVT_TEXT（CUT，COPY，PASTE）的问题。我不知道为什么，但是当我在Page中按Ctrl + C或Ctrl + X或Ctrl + V时，会调用类Page的EventHandler，但不是按照我的意图调用它，它会多次运行，最后它会运行由于超出最大递归而导致RunTimeError。类的结构是Editor has Notebook，Notebook有Page。使用的Python版本是2.7.1，wxPython ver。 2.8.8.1，OS WinXP SP2。

class Page(wx.TextCtrl):
  def __init__(self, parent, Path=''):
    super(Notebook.Page, self).__init__(parent, style = wx.TE_MULTILINE)
    self.Bind(wx.EVT_TEXT_CUT, self.EventHandler, self)
    self.Bind(wx.EVT_TEXT_COPY, self.EventHandler, self)
    self.Bind(wx.EVT_TEXT_PASTE, self.EventHandler, self)

  def EventHandler(self, Event):
    if Event.GetEventType() == 10119:
      print 'I\'m called'
      Event.Skip()
      self.GetGrandParent().EventHandler(wx.ID_CUT)
    elif Event.GetEventType() == 10118:
      self.GetGrandParent().EventHandler(wx.ID_COPY)
    elif Event.GetEventType() == 10120:
      self.GetGrandParent().EventHandler(wx.ID_PASTE)

Grand Parent的代码部分就是这个

class Editor(wx.Frame):
  def __init__(self, parent, *args, **kwargs):
    wx.Frame.__init__(self, parent, *args, **kwargs)

  def EventHandler(self, Event):
    if type(Event) != int:
      EventID = Event.GetId()
      EventObj = Event.GetEventObject()
    else:
      EventID = Event
    ## Cut or Copy
    if EventID == wx.ID_CUT or EventID == wx.ID_COPY:
      Page = self.Note.GetPage(self.Note.GetSelection())
      print Page
      if EventID == wx.ID_CUT:
        Page.Cut()
      else:
        Page.Copy()
      if self.Clipboard.IsShown():
        if not wx.TheClipboard.IsOpened():
          wx.TheClipboard.Open()
        Data = wx.TextDataObject()
        Success = wx.TheClipboard.GetData(Data)
        wx.TheClipboard.Close()
        if Success:
          self.Clipboard.AddData(Data.GetText())
    ## Paste
    if EventID == wx.ID_PASTE:
      if not wx.TheClipboard.IsOpened():
        wx.TheClipboard.Open()
        Data = wx.TextDataObject(self.Clipboard.ListBox.GetString(
                               self.Clipboard.ListBox.GetSelection()))
        wx.TheClipboard.SetData(Data)
        self.Note.GetPage(self.Note.GetSelection()).Paste()
        wx.TheClipboard.Close()

告诉我是否需要其他信息。提前谢谢。