# File easy_vtk.rb, line 1024 def gui_start iren = Vtk::RenderWindowInteractor.new iren.SetRenderWindow( @renWin ) iren.Initialize if block_given? proc = Proc.new{|widget, event| if widget.GetKeySym == 'Return' yield @renWin.Render end } iren.AddObserver('KeyPressEvent', proc ) end iren.Start return nil end