问我可以设置toolTip出现在QGraphicsItem上的时间吗？

EN

void QToolTip::showText(const QPoint &pos, const QString &text, QWidget *w, const QRect &rect, int msecDisplayTime)

//CREATE AN EMPTY RECT
QRect rect();

//HANDLE THE QEvent::ToolTip
if (event->type() == QEvent::ToolTip) {
        QHelpEvent *helpEvent = static_cast<QHelpEvent *>(event);
        int index = itemAt(helpEvent->pos());
        if (index != -1) {

        //HERE YOU CAN CONTROL TIME.
            QToolTip::showText(helpEvent->globalPos(), shapeItems[index].toolTip(), nullptr,rect,<<TIME YOU WANT TO SET>>);
        } else {
            QToolTip::hideText();
            event->ignore();
        }

        return true;
    }
    return QWidget::event(event);
}