Nested wxSplitterWindows

[-Patrick]

I've looked over the discussion forums, which when searched for the 
keyword wxSplitterWindow showed three pages with entries - most of which 
I examined, and the keywords:
nested wxSplitterWindow returned no results. I found this and tried to 
understand it:
http://lists.wxwidgets.org/archive/wx-users/msg10281.html

My goal is to replicate the exact opposite - with the horizontal split 
on the left hand side instead of the right.

The header file for MyFrame.h looks like this:
  class MyFrame : public wxFrame {
  private:
    /**
     * Layout variables for the split and scrolled windows.
     */
    wxSplitterWindow *mainSplitter, *nestedSplitter;
   
    wxWindow *leftWindow, *rightWindow, *topLeftWindow, *bottomLeftWindow;
  .......

And the implementation is failing horribly with only a top left window 
about 10 x 10 pixels in size. I did successfully implement one split 
window but I am having trouble implementing a nested split window.
MyFrame.cpp:
void MyFrame::CreateSplitter() { 
  mainSplitter = new wxSplitterWindow(this);

  // settings for left window
  leftWindow = new wxScrolledWindow(mainSplitter);
  leftWindow->SetBackgroundColour(*wxBLACK);

  // settings for the righthand side column
  rightWindow = new wxScrolledWindow(mainSplitter);
  rightWindow->SetBackgroundColour(*wxWHITE);

  nestedSplitter = new wxSplitterWindow(leftWindow);
 
  // settings for the top window
  topLeftWindow = new wxScrolledWindow(nestedSplitter);
  topLeftWindow->SetBackgroundColour(*wxBLACK);
 
  // settings for the bottom window
  bottomLeftWindow = new wxScrolledWindow(nestedSplitter);
  bottomLeftWindow->SetBackgroundColour(*wxWHITE);
 
  mainSplitter->SplitVertically(nestedSplitter, rightWindow, 700);
  nestedSplitter->SplitHorizontally(topLeftWindow, bottomLeftWindow, 
100);   
 
  ......

I look forward to your suggestions.
Thank you,
-Patrick