import wx
import wx.lib.agw.persist as PM

class MyFrame(wx.Frame):

    def __init__(self, parent):

        wx.Frame.__init(self, parent, -1, "Persistent Controls Demo")        

        book = wx.Notebook(self, wx.ID_ANY)

        # Very important step!!            
        book.SetName("MyBook") # Do not use the default name!!
        
        book.AddPage(wx.Panel(book), "Hello")
        book.AddPage(wx.Panel(book), "World")
        
        if not PM.PersistenceManager.RegisterAndRestore(book):
            # Nothing was restored, so choose the default page ourselves
            book.SetSelection(0)


# our normal wxApp-derived class, as usual

app = wx.PySimpleApp()

frame = MyFrame(None)
app.SetTopWindow(frame)
frame.Show()

app.MainLoop()