+ /**
+ * Paints the signal's current error message text.
+ * @param p the QPainter to paint into.
+ * @param pp The painting parameters object to paint with.
+ */
+ virtual void paint_error(QPainter &p, const ViewItemPaintParams &pp);
+
+ virtual QMenu* create_header_context_menu(QWidget *parent);
+
+ virtual QMenu* create_view_context_menu(QWidget *parent, QPoint &click_pos);