在QT中将事件传播到最顶层的Widget/QMainWindow的最佳方式是什么

class EventFilter : public QObject
{
    Q_OBJECT

public:
    explicit EventFilter(QObject *parent = nullptr) : QObject(parent) {}

protected:
    bool eventFilter(QObject *obj, QEvent *event) override
    {
        if (event->type() == QEvent::SomeEventType) {
            // 处理事件的逻辑
            // 将事件传播到最顶层的Widget/QMainWindow
            return true;
        }

        return QObject::eventFilter(obj, event);
    }
};

EventFilter *filter = new EventFilter;
widget->installEventFilter(filter);

bool EventFilter::eventFilter(QObject *obj, QEvent *event)
{
    if (event->type() == QEvent::SomeEventType) {
        // 处理事件的逻辑

        // 将事件传播到最顶层的Widget/QMainWindow
        QMainWindow *mainWindow = qobject_cast<QMainWindow*>(obj->topLevelWidget());
        if (mainWindow) {
            QCoreApplication::sendEvent(mainWindow, event);
            return true;
        }
    }

    return QObject::eventFilter(obj, event);
}