StaticBoxSizer bug?

I've run into a disparity in the behavior of StaticBoxSizer
between
wxruby2 and straight C++ wxWindows or wxPython.  I've
attached three
equivalent test programs that place some text in a panel
using a
StaticBoxSizer to create a decorative rectangle around the
text region.
The C++ and wxPython programs create the desired result,
with the
StaticBox expanding to the available space in the window and
adjusting
as the window is resized.  In wxruby2, the StaticBox is
displayed
at its minimum size in the upper left hand corner of the
window
and does not resize.  I've tested all the programs on both
Linux/GTK
and Windows with the same results.  I've tried both an
April 10th
checkout of wxruby2 with SWIG 1.3.24 and the latest April
22nd
checkout with SWIG 1.3.29 with the same result.

After spending a lot of time assuming I was doing something
wrong with
either wxruby2 or the wxWindows API, I finally wrote the
three
test programs for comparison.  I've tried to find the
source of the
problem in wxruby2, but I've verified that the
SWIG-generated code is
calling StaticBoxSizer::Add with the proper parameter
values.  I was
hoping someone on the list might already be aware of the
problem
and point me to a workaround.  At the very least I figured
I'd report
the problem if it had not been identified previously.  I'll
spend
a bit more time trying to track down the source of the
problem, but
I bet it's something really obvious to someone with more
experience
than I at hacking the wxruby2 source.

daniel

#include <wx/wx.h>

class SizerTestApp : public wxApp {
public:
  virtual bool OnInit();
};

class SizerTestFrame : public wxFrame {
public:
  SizerTestFrame(const wxString & title);
};

IMPLEMENT_APP(SizerTestApp);

bool SizerTestApp::OnInit() {
  SizerTestFrame *frame = new
SizerTestFrame("Test");

  frame->Show(true);

  return true;
}

SizerTestFrame::SizerTestFrame(const wxString & title) :
  wxFrame(NULL, wxID_ANY, title)
{
  wxPanel *panel       = new wxPanel(this, wxID_ANY);
  wxBoxSizer *boxSizer = new wxBoxSizer(wxHORIZONTAL);
  wxStaticBox *box     = new wxStaticBox(panel, wxID_ANY,
wxT("BoxTitle"));
  wxStaticText *text   = new wxStaticText(panel, wxID_ANY,
wxT("Some text!"));
  wxStaticBoxSizer *staticBoxSizer = new
wxStaticBoxSizer(box, wxVERTICAL);

  staticBoxSizer->Add(text, 1, wxEXPAND | wxALL, 16);
  boxSizer->Add(staticBoxSizer, 1, wxEXPAND | wxALL, 16);
  panel->SetSizerAndFit(boxSizer);
}
#!/usr/bin/env python

from wxPython.wx import *

class SizerTestFrame(wxFrame):
  def __init__(self, parent, ID, title):
    wxFrame.__init__(self, parent, ID, title)
    panel    = wxPanel(self, wxID_ANY)
    boxSizer = wxBoxSizer(wxHORIZONTAL)
    box      = wxStaticBox(panel, wxID_ANY,
"BoxTitle")
    text     = wxStaticText(panel, wxID_ANY, "Some
text!")
    staticBoxSizer = wxStaticBoxSizer(box, wxVERTICAL)

    staticBoxSizer.Add(text, 1, wxEXPAND | wxALL, 16)
    boxSizer.Add(staticBoxSizer, 1, wxEXPAND | wxALL, 16)
    panel.SetSizerAndFit(boxSizer)

class SizerTestApp(wxApp):
  def __init__( self  ):
    wxApp.__init__( self )

  def OnInit(self):
    self.frame = SizerTestFrame(NULL, wxID_ANY,
"Test")
    self.frame.Show(true)
    return true

SizerTestApp().MainLoop()
#!/usr/bin/env ruby

require 'wx'

class SizerTestFrame < Wx::Frame
  def initialize(*args)
    super(*args)

    panel     = Wx::Panel.new(self, Wx::ID_ANY)
    box_sizer = Wx::BoxSizer.new(Wx::HORIZONTAL)
    box       = Wx::StaticBox.new(panel, Wx::ID_ANY, 'Box
Title')
    text      = Wx::StaticText.new(panel, Wx::ID_ANY, 'Some
text!')
    static_box_sizer = Wx::StaticBoxSizer.new(box,
Wx::VERTICAL)

    static_box_sizer.add(text, 1, Wx::EXPAND | Wx::ALL, 16)
    box_sizer.add(static_box_sizer, 1, Wx::EXPAND | Wx::ALL,
16)
    panel.set_sizer_and_fit(box_sizer)
  end
end

class SizerTestApp < Wx::App
  def on_init
    frame = SizerTestFrame.new(nil, Wx::ID_ANY, 'Test')
    frame.show
  end
end

SizerTestApp.new.main_loop
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StaticBoxSizer bug?

Thread: StaticBoxSizer bug?