new_contents: #------------------------------------------------------------------------------
  # Copyright (c) 2011, Enthought, Inc.
  # All rights reserved.
  #
  # This software is provided without warranty under the terms of the BSD
  # license included in enthought/LICENSE.txt and may be redistributed only
  # under the conditions described in the aforementioned license.  The license
  # is also available online at http://www.enthought.com/licenses/BSD.txt
  # Thanks for using Enthought open source!
  #------------------------------------------------------------------------------
  
  from enthought.kiva.qpainter import CompiledPath, GraphicsContext, font_metrics_provider
  
  class NativeScrollBar(object):
      pass
  
  class Window(object):
      pass
subject: Add a qpainter backend for the null toolkit