cmpTaskContainer.addSelectionListener( this );  Composite cmpButton = new Composite( shell, SWT.NONE ); { cmpButton.setLayout( new GridLayout( ) ); GridData gd = new GridData( ); gd.horizontalAlignment = SWT.END; cmpButton.setLayoutData( gd ); } buttonpanel = new ButtonPanel( cmpButton, SWT.NONE, this );
	private void placeComponents( )	{		GridLayout glTest = new GridLayout( );		glTest.numColumns = 1;		glTest.marginHeight = 10;		glTest.marginWidth = 20;		cmpTaskContainer = new Canvas( shell, SWT.NONE );		slTaskContainer = new StackLayout( );		cmpTaskContainer.setLayout( slTaskContainer );		cmpTaskContainer.setLayoutData( new GridData( GridData.FILL_BOTH ) );	}