DragSource dragSource = DragSource.getDefaultDragSource();
dragSource.createDefaultDragGestureRecognizer(treetable,
DnDConstants.ACTION_COPY_OR_MOVE, this);
dragSource.addDragSourceListener(this);
DropTarget dropTarget = new DropTarget(treetable,
new GanttTreeDropListener());
dropTarget.setDefaultActions(DnDConstants.ACTION_COPY_OR_MOVE);
getTreeTable().setToolTipText("aze");
getTreeTable().getTreeTable().setToolTipText("rty");
}