Bug 213504 [Markers] Problems View no longer supports dragging into the Editor Area
I20071218-0800. You used to be able to drag an error into the Editor Area in order to open the associated file. I commonly use the DnD gesture to open a 'problem' but it appears that this isn't working in the new version...
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/ExtendedMarkersView.java
*            the columns to refresh
	 */
	private void createColumns(TreeColumn[] currentColumns) {
		Tree tree = viewer.getTree();
		TableLayout layout = new TableLayout();
		MarkerField[] fields = builder.getVisibleFields();
		IMemento columnWidths = null;
		if (memento != null)
			columnWidths = memento.getChild(TAG_COLUMN_WIDTHS);
		for (int i = 0; i < fields.length; i++) {
			MarkerField markerField = fields[i];
			TreeViewerColumn column;
			if (i < currentColumns.length)
				column = new TreeViewerColumn(viewer, currentColumns[i]);
			else {
				column = new TreeViewerColumn(viewer, SWT.NONE);
				column.getColumn().setResizable(true);
				column.getColumn().setMoveable(true);
				column.getColumn().addSelectionListener(getHeaderListener());
			}
			column.getColumn().setData(MARKER_FIELD, markerField);
			
			column.setLabelProvider(new MarkerColumnLabelProvider(markerField));
			column.getColumn().setText(markerField.getColumnHeaderText());
			column.getColumn().setToolTipText(
					markerField.getColumnTooltipText());
			column.getColumn().setImage(markerField.getColumnHeaderImage());
			EditingSupport support = markerField.getEditingSupport(viewer);
			if (support != null)
				column.setEditingSupport(support);