code: private void addDisabledExamples() {
  		add(new WHeading(HeadingLevel.H2, "Disabled WRadioButtonSelect examples"));
  		WFieldLayout layout = new WFieldLayout();
  		add(layout);
  		WRadioButtonSelect select = new WRadioButtonSelect("australian_state");
  		select.setDisabled(true);
  		layout.addField("Disabled with no selection", select);
  
  		select = new WRadioButtonSelect("australian_state");
  		select.setDisabled(true);
  		select.setFrameless(true);
  		layout.addField("Disabled with no selection no frame", select);
  
  		select = new SelectWithSelection("australian_state");
  		select.setDisabled(true);
  		layout.addField("Disabled with selection", select);
  	}
docs: Examples of disabled state. You should use {@link WSubordinateControl} to set and manage the disabled state
  unless there is no facility for the user to enable a control.
  
  If you want to prevent the user enabling and interacting with a WRadioButtonSeelct then you should consider using
  the readOnly state instead of the disabled state.