my_text_field = nil  
  Shoes.app :title => "Dict.org",:height => 400, :width => 600 do  
     background rgb(0xd9, 0x51, 0x95)
     stack :margin => 10 do  
          word = para ""
          my_text_field = edit_box("",:width => 550,:height => 300)  
          previous_clipboard = ""
          Thread.new {
              while true
                sleep 1
                clipboard = self.clipboard

                if previous_clipboard != clipboard
                  my_text_field.text = IO.popen("dict #{self.clipboard}").read  
                  word.replace(clipboard)
                end

                previous_clipboard = clipboard
              end
          }
     end  
  end