How to make resizable PropertySheet?

I'm using MFC, and trying to make a subclass of CPropertySheet that is resizable.  I've tried to override CWnd::PreCreateWindow(), but it isn't called.  I can catch WM_NCCREATE using the message map and OR in WS_THICKFRAME to the window style, but that seems to be ignored.  Does anyone know how to do this?
jlilleyAsked:
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RONSLOWCommented:
have a look at NSViews .. this is shareware.  It gives you resizable property sheets, dialogs, views etc.

Also look at www.codeguru.com

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jlilleyAuthor Commented:
Although I'm not using NSViews directly, their code contained the secret incantation I was looking for, which I append here for posterity.  Thanks NanoSoft!!!

int CNSFlexPropertySheet::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
   if (CPropertySheet::OnCreate(lpCreateStruct) == -1)
      return -1;

    LONG lSTYLE = GetWindowLong(m_hWnd,GWL_STYLE);
    LONG lEXSTYLE = GetWindowLong(m_hWnd,GWL_EXSTYLE);

    if ((lSTYLE & DS_MODALFRAME) == DS_MODALFRAME)
    {
        lSTYLE &= ~(LONG)DS_MODALFRAME;
        lSTYLE |= WS_THICKFRAME;
      SetWindowLong(m_hWnd,GWL_STYLE,lSTYLE);
    }

    if ((lEXSTYLE & WS_EX_DLGMODALFRAME) == WS_EX_DLGMODALFRAME)
    {
        lEXSTYLE &= ~(DWORD)WS_EX_DLGMODALFRAME;
      SetWindowLong(m_hWnd,GWL_EXSTYLE,lEXSTYLE);
    }
   else
   {
        lEXSTYLE |= (DWORD)WS_EX_CLIENTEDGE;
      SetWindowLong(m_hWnd,GWL_EXSTYLE,lEXSTYLE);
   }

   return 0;
}

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