FXRuby usage: Capturing results from an FXDialogBox

Hi all,

I'm working on a script to query some decisions from the user. So 
there's a loop iterating over pairs of alternatively possible choices.

Now, during querying the main program shouldn't be available, thus some
kind of modal dialog box seems appropriate.

Up to now I wrote the following stuff, which is likely not the most 
elegant way, but let's follow the "Make it parse, make it work, make it 
nice, make it fast (IF neccessary" maxime for a moment. (But then I'm 
open for any improvements!)


class PriorizeDialog < FXDialogBox

  attr_reader :result

  include Responder

  ID_ITEM1,
  ID_ITEM2 = enum( FXMainWindow::ID_LAST , 2 )

  def initialize( owner, item1, item2 )

    @result = 0

    FXMAPFUNC( SEL_COMMAND, PriorizeDialog::ID_ITEM1, "onItem1" )
    FXMAPFUNC( SEL_COMMAND, PriorizeDialog::ID_ITEM2, "onItem2" )

    # Invoke base class initialize function first
    super(owner, "Priorize pair", DECOR_TITLE|DECOR_BORDER)

    # Bottom buttons
    buttons = FXHorizontalFrame.new(self, LAYOUT_SIDE_BOTTOM |
      FRAME_NONE | LAYOUT_FILL_X|PACK_UNIFORM_WIDTH, 0, 0, 0, 0, 40, 
40,
      20, 20)

    # Select item 2
    FXButton.new(buttons, "&2. #{item2}", nil, self, ID_ITEM2,
      FRAME_RAISED|FRAME_THICK|LAYOUT_RIGHT|LAYOUT_CENTER_Y)

    # Select item 1
    FXButton.new(buttons, "&1. #{item1}", nil, self, ID_ITEM1,
      FRAME_RAISED|FRAME_THICK|LAYOUT_RIGHT|LAYOUT_CENTER_Y)

  end

  def onItem1( sender, sel, ptr )
    @result = 1
  end

  def onItem2( sender, sel, ptr )
    @result = 2
  end

end

Now that doen't work: The dialog will never quit.
My guess is that the script never runs into code that sends something 
like ID_ACCEPT/ID_CANCEL to the appropriate object (which is self I think).

What's the ruby way do accomplish this?
I have the stron feeling that my way of fiddling with @result may not be 
too terribly rubyish - is there a better (Ruby) way to do this?

Thanks for any comments.

Stephan