diff --git a/examples/sql/doc/src/drilldown.qdoc b/examples/sql/doc/src/drilldown.qdoc index 8beb515a839..a7a9601c26d 100644 --- a/examples/sql/doc/src/drilldown.qdoc +++ b/examples/sql/doc/src/drilldown.qdoc @@ -437,6 +437,9 @@ \snippet drilldown/imageitem.h 0 + We declare a \c Type enum value for our custom item and reimplement + \l{QGreaphicsItem::}{type()}. This is done so we can safely use + qgraphicsitem_cast(). In addition, we implement a public \c id() function to be able to identify the associated location and a public \c adjust() function that can be called to ensure that the image item is given the diff --git a/examples/sql/drilldown/imageitem.h b/examples/sql/drilldown/imageitem.h index abb9103c7eb..324c847b122 100644 --- a/examples/sql/drilldown/imageitem.h +++ b/examples/sql/drilldown/imageitem.h @@ -60,8 +60,11 @@ class ImageItem : public QObject, public QGraphicsPixmapItem Q_OBJECT public: + enum { Type = UserType + 1 }; + ImageItem(int id, const QPixmap &pixmap, QGraphicsItem *parent = nullptr); + int type() const override { return Type; } void adjust(); int id() const;