如何使用关闭按钮在wxPython notebook上生成新页面？

class MainWindow(wx.Frame):
    def __init__(self, parent, title):
        wx.Frame.__init__(self, parent, title=title, size=(800, 600))
        self.panel = wx.Panel(self)
        self.Bind(wx.EVT_CLOSE, self.on_close)

def on_close(self, event):
    # 创建新的页面
    new_page = wx.Panel(self.notebook)
    self.notebook.AddPage(new_page, "New Page")
    event.Skip()

app = wx.App()
frame = MainWindow(None, "wxPython Notebook")
frame.Show()
app.MainLoop()