wxpython widgets within not responding to events
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I'm a newbie in wxpython and have been trying to put some widgets within books(treebook, notebook, choicebook) I have often ended up with some widgets placed inside containers not responding to events. I'm not sure what I'm doing wrong. Below is one of my code

    import wx
    
    class ChoicePanelTwo(wx.Panel):
        def __init__(self, parent, seed):
            wx.Panel.__init__(self, parent=parent, id=wx.ID_ANY)
            self.SetBackgroundColour('blue')
            sizer = wx.BoxSizer(wx.HORIZONTAL)
            self.List = wx.ListCtrl(self, -1, style=wx.LC_REPORT)
            for i in range(seed):
                self.List.InsertStringItem(i, str(i))
            sizer.Add(self.List, 1, wx.ALL|wx.EXPAND, 5)
            self.SetSizer(sizer)
            
    class ChoicePanelOne(wx.Panel):
        def __init__(self, parent, seed):
            wx.Panel.__init__(self, parent=parent, id=wx.ID_ANY)
            self.SetBackgroundColour('green')
            sizer = wx.BoxSizer(wx.HORIZONTAL)
            self.RegisterList = wx.Choicebook(self, wx.ID_ANY)
            sizer.Add(self.RegisterList, 1, wx.ALL|wx.EXPAND, 5)
            for i in range(seed):
                self.RegisterList.AddPage(ChoicePanelTwo(self, seed*50),  str(i))
            self.SetSizer(sizer)
    
    class TreePanel(wx.Panel):
        def __init__(self, parent, seed):
            wx.Panel.__init__(self, parent, id=wx.ID_ANY)
            self.SetBackgroundColour('cyan')
            self.Choicbook = wx.Choicebook(self, wx.ID_ANY)
            for i in range(seed):
                self.Choicbook.AddPage(ChoicePanelOne(self, seed*2), str(i))
            sizer = wx.BoxSizer(wx.VERTICAL)
            sizer.Add(self.Choicbook, 1, wx.ALL|wx.EXPAND, 5)
            self.SetSizer(sizer)
        
    class AppFrame(wx.Frame):
        """ The main frame of the application
        """
        title = 'Application'
        WindowSize = (1024, 768)
        seed = 2
        
        def __init__(self):
            wx.Frame.__init__(self, None, -1, self.title, size=self.WindowSize, style=wx.MINIMIZE_BOX|wx.SYSTEM_MENU|wx.CAPTION|wx.CLOSE_BOX|wx.CLIP_CHILDREN)
            self.create_main_panel()
            
        def create_main_panel(self):
            self.panel = TreePanel(self, self.seed)        
    
    if __name__ == '__main__':
        app = wx.PySimpleApp()
        app.frame = AppFrame()
        app.frame.Show()
        app.MainLoop()

In this example. The choice book and list does seem to be working. What is that I'm doing wrong ?