Bug 275910 [Widgets] PaintListener on Tree not invoked when item count is 0
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/ExtendedMarkersView.java
columnWidth = getFieldWidth(markerField, columnWidth, false);
			if (columnWidths != null) {
				
				columnWidths.putInteger(
						markerField.getConfigurationElement().getAttribute(
						MarkerSupportInternalUtilities.ATTRIBUTE_ID), columnWidth);
			}
			
			
			if (columnWidth < 0)
				layout.addColumnData(new ColumnPixelData(markerField
						.getDefaultColumnWidth(tree), true, true));
			else
				layout.addColumnData(new ColumnPixelData(columnWidth, true));
		}
		
		if (currentColumns.length > fields.length) {
			for (int i = fields.length; i < currentColumns.length; i++) {
				currentColumns[i].dispose();
			}
		}
		viewer.getTree().setLayout(layout);
		tree.setLinesVisible(true);
		tree.setHeaderVisible(true);
		tree.layout(true);
	}
	/**
	 * 
	 * @param markerField
	 * @param preferredWidth