}
// virtual
-void Guide::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *w) {
+void Guide::paint(QPainter *painter, const QStyleOptionGraphicsItem */*option*/, QWidget */*w*/) {
painter->setMatrixEnabled(false);
QLineF guideline = painter->matrix().map(line());
painter->setPen(pen());