diff options
| -rw-r--r-- | src/gui/graphicsview/qgraphicsscene.cpp | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp index 182a3f5..c80b314 100644 --- a/src/gui/graphicsview/qgraphicsscene.cpp +++ b/src/gui/graphicsview/qgraphicsscene.cpp @@ -1561,7 +1561,10 @@ QGraphicsScene::QGraphicsScene(qreal x, qreal y, qreal width, qreal height, QObj } /*! - Destroys the QGraphicsScene object. + Removes and deletes all items from the scene object + before destroying the scene object. The scene object + is removed from the application's global scene list, + and it is removed from all associated views. */ QGraphicsScene::~QGraphicsScene() { @@ -2443,23 +2446,26 @@ void QGraphicsScene::destroyItemGroup(QGraphicsItemGroup *group) } /*! - Adds or moves the item \a item and all its childen to the scene. + Adds or moves the \a item and all its childen to this scene. + This scene takes ownership of the \a item. If the item is visible (i.e., QGraphicsItem::isVisible() returns true), QGraphicsScene will emit changed() once control goes back to the event loop. - If the item is already in a different scene, it will first be removed from - its old scene, and then added to this scene as a top-level. + If the item is already in a different scene, it will first be + removed from its old scene, and then added to this scene as a + top-level. - QGraphicsScene will send ItemSceneChange notifications to \a item while - it is added to the scene. If item does not currently belong to a scene, only one - notification is sent. If it does belong to scene already (i.e., it is - moved to this scene), QGraphicsScene will send an addition notification as - the item is removed from its previous scene. + QGraphicsScene will send ItemSceneChange notifications to \a item + while it is added to the scene. If item does not currently belong + to a scene, only one notification is sent. If it does belong to + scene already (i.e., it is moved to this scene), QGraphicsScene + will send an addition notification as the item is removed from its + previous scene. - If the item is a panel, the scene is active, and there is no active panel - in the scene, then the item will be activated. + If the item is a panel, the scene is active, and there is no + active panel in the scene, then the item will be activated. \sa removeItem(), addEllipse(), addLine(), addPath(), addPixmap(), addRect(), addText(), addWidget(), {QGraphicsItem#Sorting}{Sorting} |