Ruby + Glade ... težave

require 'Qt'

class Okno < Qt::Widget
	slots 'odpri()' , 'izdelaj()'
	def initialize
		super
		setWindowTitle "XML Generator"
		resize 220, 100
		move 300, 300
		init_ui
		show
	end
	def init_ui
		grid  = Qt::GridLayout.new self
             @line_datum = Qt::LineEdit.new self
             @label_datum =  Qt::Label.new "DATUM", self
 		@label_izvedba =  Qt::Label.new "", self
             @odpri = Qt::PushButton.new "odpri", self
             @odpri.setCheckable true
 	       connect @odpri, SIGNAL("clicked()"), SLOT("odpri()")
		@izdelaj = Qt::PushButton.new "Izdelaj", self
		@izdelaj.setCheckable true
		connect @izdelaj, SIGNAL("clicked()"), SLOT("izdelaj()")
		@konec = Qt::PushButton.new "Konec", self
		@konec.setCheckable true
		connect @konec, SIGNAL('clicked()'), $qApp, SLOT('quit()')
    
		grid.addWidget @label_datum,0,0
		grid.addWidget @line_datum,0,1
		grid.addWidget @odpri,1,0
		grid.addWidget @izdelaj,2,0
		grid.addWidget @konec,3,0
		grid.addWidget @label_izvedba,4,0
	end
 	def odpri
  		if @odpri.isChecked
  			.
  			.
  			.
  		end
	end
    
	def izdelaj
		.
		.
		.
	end
end
app = Qt::Application.new(ARGV)
Okno.new
app.exec