content: ' ********** Copyright 2016 Roku Corp.  All Rights Reserved. ********** 
  
  sub Main()
      showChannelSGScreen()
  end sub
  
  sub showChannelSGScreen()
      screen = CreateObject("roSGScreen")
      m.port = CreateObject("roMessagePort")
      screen.setMessagePort(m.port)
      m.scene = screen.CreateScene("MainScene")
      screen.show()
      ' Screen must be showing in order for observer to work
      m.scene.observeField("exitApp", m.port)
      
      while(true)
          msg = wait(0, m.port)
          msgType = type(msg)
          ? "Main sees msgType: "; msgType
          if msgType = "roSGScreenEvent"
              if msg.isScreenClosed() then return
          else if msgType = "roSGNodeEvent"
              msgField = msg.getField()
              if msgField = "exitApp"
                  if msg.getData() then return
              end if
          end if
      end while
  end sub
  