QGraphicsView 是否拥有其关联图形场景的所有权？
我想知道...如果我分配一个图形场景
QGraphicsScene* scene = new QGraphicsScene();
并将其与图形视图关联，
this->ui->graphicsView->setScene(scene);
图形视图是否拥有该场景的所有权？换句话说，图形视图是在其析构函数中删除场景还是我应该自己删除场景？
I was wondering... if I allocate a graphics scene
QGraphicsScene* scene = new QGraphicsScene();
and associate it with a graphics view
this->ui->graphicsView->setScene(scene);
does the graphics view take ownership of the scene? In other words, does the graphics view delete the scene in its destructor or should I delete the scene myself?
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答案是否。
这是因为 Qt 可以在多个视图中显示一个模型（在本例中为 QGraphicsScene），这是每个模型/视图框架的标准功能。
QGrahpicsView::setScene()的文档缺少有关场景所有权发生情况的信息，但情况与其他视图相同；例如来自void QWebView::setPage ( QWebPage * page )< 的文档/代码>The answer is no.
That's because Qt makes it possible to display one model (
QGraphicsScenein this case) in many views which is a standard feature of every model/view framework.Documentation of
QGrahpicsView::setScene()lacks information about what happens to ownership of a scene but the situation is the same as with others views; for example from documentation ofvoid QWebView::setPage ( QWebPage * page )