content: '*************************************************************
  '** Copyright (c) 2015 Roku, Inc.  All rights reserved.
  '** Use of the Roku Platform is subject to the Roku SDK Licence Agreement:
  '** https://docs.roku.com/doc/developersdk/en-us
  '** Andy Yu
  '*************************************************************
  
  sub Main()
    print "in showChannelSGScreen"
    screen = CreateObject("roSGScreen")
    m.port = CreateObject("roMessagePort")
    screen.setMessagePort(m.port)
    scene = screen.CreateScene("TestScene")
    screen.show()
  
    while(true)
      msg = wait(0, m.port)
      msgType = type(msg)
      if msgType = "roSGScreenEvent"
          if msg.isScreenClosed() then return
      end if
    end while
  end sub
  