control = new Composite( parent, SWT.NONE ); previewEditor.createPartControl( (Composite) control );
super.createPartControl( parent ); Control[] children = parent.getChildren( ); control = children[children.length - 1];
	public void createPartControl( Composite parent )	{		// Control[] children = parent.getChildren();		control = new Composite( parent, SWT.NONE );		previewEditor.createPartControl( (Composite) control );	}