org.eclipse.xwt.tests/src/org/eclipse/xwt/samples/triggers/Trigger2.xwt

<Composite xmlns="http://www.eclipse.org/xwt/presentation"
    xmlns:x="http://www.eclipse.org/xwt"
    x:Class="org.eclipse.xwt.tests.xaml.Name">
	<Composite.layout>
		<GridLayout numColumns="2"/>
	</Composite.layout>
<Button Name="Button1" x:Style="CHECK" text="Unselected"/>
<Button x:Style="CHECK" text="Button State">
  <Button.triggers>
   <Trigger property="selection" value="true">
     <Setter property="Text" value="selected" targetName="Button1"/> 
	</Trigger>
  </Button.triggers>
</Button>

</Composite>