2D API mixed with roku Screens

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1

I am trying to go between a 2D screen and a built in roku screen (roSearchScreen). The code I wrote below demonstrates the concept and actually works, but intermediately it gets stuck on the search screen. Anyone know what I am doing wrong ?


Library "v30/bslCore.brs"

Function Main() As Void

device = CreateObject("roDeviceInfo")
displaySize = device.GetDisplaySize()
       
screen =  CreateObject("roScreen", True)
msgport = CreateObject("roMessagePort")
screen.SetMessagePort(msgport)

compositor = CreateObject("roCompositor")
compositor.SetDrawTo( screen, &h000000FF )

overhangColorBmp = CreateObject("roBitmap", {width: displaySize.w, height: 121, AlphaEnable: false} )
overhangColorBmp.Clear ( RGBA_to_int( 232, 232, 73, 255) )
       
overhangregion = CreateObject("roRegion", overhangColorBmp, 0, 0, displaySize.w, 121)
compositor.NewSprite(0, 0, overhangregion)

compositor.DrawAll()
screen.swapbuffers()

codes = bslUniversalControlEventCodes()

' Start our event loop
   while true
   msg = Wait(0, msgport)
        if type(msg) = "roUniversalControlEvent" then
                keypressed = msg.GetInt()
                if keypressed = codes.BUTTON_UP_PRESSED then
                
                   ShowSearchScreen()
                   print "Exited Search Screen"
                   
                   compositor.DrawAll()
				   screen.swapbuffers()
	
                end if
        end if
    end while

End Function

Function ShowSearchScreen() As Void

    port = CreateObject("roMessagePort")
    screen = CreateObject("roSearchScreen")
    screen.SetMessagePort(port)
    screen.Show()
    
    ' search screen main event loop
    done = false
    while done = false
        msg = wait(0, screen.GetMessagePort())
        if type(msg) = "roSearchScreenEvent"
          screen.Close()
          done = true
        endif
    endwhile

End Function

Function RGBA_to_int(R, G, B, A) As Integer

    return &h1000000*R + &h10000*G + &h100*B + A
       
End Function
2

Try setting the return type to something other than void, and return a value


else if msg.isscreenclosed() 
     return -1 'or some value

when the search screen function closes.

Generally, it is best not to mix these screentypes, instead create a keyboard screen using the 2D API.

  • Joel