problem setting the sashposition of a SplitterWindow

[Humberto Abdelnur]

Hi everyone,

I'm having problems setting the sashposition of a SplitterWindow.
In fact, the problem arises every time that one SplitterWindow is a 
children of component, in my code a page of a notebook, and that 
notebook  is one of the  windows in a outsider SplitterWindow.

To illustrate the problem, an example code is at end of the mail.
It makes 3 frames, each one of them with a format like
----------------------------
----------------------------
|   A  |  B_1 | B_2 |
----------------------------

Where a main splitter is between panels A and B. And B itself has 
another splitter with contains the Panels B_1 and B2.
So, the sashposition of the splitter  (A,B) works perfectly. however, i  
m not  able to set the position for the splitter (B_1,B_2)

Thanks in advance,
Humberto


########################################################
import wx
class MyFrame(wx.Frame):
    def __init__(self, parent, id, title, splittersash= (None,None)):
        wx.Frame.__init__(self, parent, id, title, wx.DefaultPosition, 
wx.Size(400, 300))
       
        mainsplitter = wx.SplitterWindow(self, -1)
       
        A = wx.Panel(mainsplitter, -1)
        A.SetBackgroundColour(wx.LIGHT_GREY)
       
        B = wx.Panel(mainsplitter, -1)
        vbox = wx.BoxSizer()
       
        splitter2 = wx.SplitterWindow(B, -1)
       
        B_1 = wx.Panel(splitter2, -1)
        B_1.SetBackgroundColour(wx.LIGHT_GREY)
        B_2 = wx.Panel(splitter2, -1)
        B_2.SetBackgroundColour(wx.WHITE)
       
        splitter2.SplitVertically(B_1, B_2, splittersash[0])
       
        vbox.Add(splitter2, 1, wx.EXPAND)
        B.SetSizer(vbox)
       
        mainsplitter.SplitVertically(A, B, splittersash[1])
        self.Centre()

if __name__ == '__main__':

    app = wx.PySimpleApp()
    frame = MyFrame(None, -1, 
'splitterwindow(FirstSash=100,SecondSash=100)', splittersash=(100,100))
    frame.Show(True)
    frame = MyFrame(None, -1, 
'splitterwindow(FirstSash=100,SecondSash=200)', splittersash=(100,200))
    frame.Show(True)
    frame = MyFrame(None, -1, 
'splitterwindow(FirstSash=200,SecondSash=200)', splittersash=(200,200))
    frame.Show(True)
    app.MainLoop()