From a2446c0eede445eb40905487b1ba7c689aa8baef Mon Sep 17 00:00:00 2001 From: Paul Wicking Date: Fri, 6 Mar 2020 07:29:12 +0100 Subject: Doc: Let SQL Drill Down example show correct use of qgraphicsitem_cast For qgraphicsitem_cast to work correctly with custom items, one must reimplement the type() function for each custom QGraphicsItem subclass. Do that in the example code. Fixes: QTBUG-7357 Change-Id: Ibf221817908355f0347cddfc46747b6955958f5f Reviewed-by: Andy Shaw --- examples/sql/doc/src/drilldown.qdoc | 3 +++ 1 file changed, 3 insertions(+) (limited to 'examples/sql/doc/src') diff --git a/examples/sql/doc/src/drilldown.qdoc b/examples/sql/doc/src/drilldown.qdoc index 8beb515a83..a7a9601c26 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 -- cgit v1.2.3