c++ - 以下代码中嵌入的 "new"是否会导致内存泄漏？

Question

我不这么认为，我认为内存在函数终止时被删除，但我想与社区核实。

void MainWindow::editCopy   (void)
{
    QWidget *pqwgtFocus = QApplication::focusWidget();

    if (pqwgtFocus != 0)
    {
        QApplication::postEvent (   pqwgtFocus,
                                    new QKeyEvent   (   QEvent::KeyPress,
                                                        Qt::Key_C,
                                                        Qt::ControlModifier
                                                    )
                                );

        QApplication::postEvent (   pqwgtFocus,
                                    new QKeyEvent   (   QEvent::KeyRelease,
                                                        Qt::Key_C,
                                                        Qt::ControlModifier
                                                    )
                                );
    }

    return;
}

Answer 1

是的，该应用程序将取得所有权并且它非常安全。

The event must be allocated on the heap since the post event queue will take ownership of the event and delete it once it has been posted. It is not safe to access the event after it has been posted.

https://doc.qt.io/qt-5/qcoreapplication.html#postEvent