import org.eclipse.nebula.widgets.nattable.layer.CompositeLayer; //导入依赖的package包/类
@Override
public Control construct(Composite parent) {
	Composite content = new Composite(parent, SWT.NONE);
	GridDataFactory.fillDefaults().grab(true, true).applyTo(content);
	GridLayoutFactory.fillDefaults().numColumns(1).applyTo(content);

	CompositeLayer layer = new CompositeLayer(1, 1);
	layer.setChildLayer(GridRegion.BODY,
			new ViewportLayer(
					new SelectionLayer(new SpanningDataLayer(new DummySpanningBodyDataProvider(1000000, 1000000)))),
			0, 0);
	NatTable table = new NatTable(content, layer);
	
	GridDataFactory.fillDefaults().grab(true, true).applyTo(table);

	return content;
}