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authoraxis <qt-info@nokia.com>2009-10-27 08:32:25 (GMT)
committeraxis <qt-info@nokia.com>2009-10-27 08:32:25 (GMT)
commit51bfafed59d77b791f0266fa1bfc36634597c5c4 (patch)
tree630d9fbc5aad375950b03d80cf775c228f31a741 /src/gui/graphicsview/qgraphicsitem.cpp
parentcb3a2633bb9d8a0e949c403d0f0631caef254599 (diff)
parent5a4909d9f87b9abf471908a085c0e9f31b7e0a50 (diff)
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Merge branch '4.6' of git@scm.dev.nokia.troll.no:qt/qt into 4.6
Diffstat (limited to 'src/gui/graphicsview/qgraphicsitem.cpp')
-rw-r--r--src/gui/graphicsview/qgraphicsitem.cpp21
1 files changed, 20 insertions, 1 deletions
diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp
index 97979e5..edd2d7c 100644
--- a/src/gui/graphicsview/qgraphicsitem.cpp
+++ b/src/gui/graphicsview/qgraphicsitem.cpp
@@ -1228,7 +1228,8 @@ void QGraphicsItemCache::purge()
}
/*!
- Constructs a QGraphicsItem with the given \a parent.
+ Constructs a QGraphicsItem, passing \a item to QGraphicsItem's constructor.
+ It does not modify the parent object returned by QObject::parent().
If \a parent is 0, you can add the item to a scene by calling
QGraphicsScene::addItem(). The item will then become a top-level item.
@@ -7283,6 +7284,21 @@ static void qt_graphicsItem_highlightSelected(
The class extends a QGraphicsItem with QObject's signal/slot and property mechanisms.
It maps many of QGraphicsItem's basic setters and getters to properties and adds notification
signals for many of them.
+
+ \section1 Parents and Children
+
+ Each graphics object can be constructed with a parent item. This ensures that the
+ item will be destroyed when its parent item is destroyed. Although QGraphicsObject
+ inherits from both QObject and QGraphicsItem, you should use the functions provided
+ by QGraphicsItem, \e not QObject, to manage the relationships between parent and
+ child items.
+
+ The relationships between items can be explored using the parentItem() and childItems()
+ functions. In the hierarchy of items in a scene, the parentObject() and parentWidget()
+ functions are the equivalent of the QWidget::parent() and QWidget::parentWidget()
+ functions for QWidget subclasses.
+
+ \sa QGraphicsWidget
*/
/*!
@@ -7320,6 +7336,9 @@ void QGraphicsObject::grabGesture(Qt::GestureType gesture, Qt::GestureContext co
\property QGraphicsObject::parent
\brief the parent of the item
+ \note The item's parent is set independently of the parent object returned
+ by QObject::parent().
+
\sa QGraphicsItem::setParentItem(), QGraphicsItem::parentObject()
*/