在qml中對陣列Array可以進行push [index] .length clear;等操作
而從c++中向qml中匯入list

//這裡是例項化一個QQmlListProperty，分別使用這四個函式指標
QQmlListProperty<Person> BirthdayParty::guests()
{
    return QQmlListProperty<Person>(this, this,
             &BirthdayParty::appendGuest,
             &BirthdayParty::guestCount,
             &BirthdayParty::guest,
             &BirthdayParty::clearGuests);
//    return QQmlListProperty<Person>(this, m_guests);
 

}

//這是最終執行的函式
void BirthdayParty::appendGuest(Person* p) {
    qDebug() << "appendGuest1";
    m_guests.append(p);
}
int BirthdayParty::guestCount() const
{
    return m_guests.count();
}
Person *BirthdayParty::guest(int index) const
{
    return m_guests.at(index);
}
void BirthdayParty::clearGuests() {
    qDebug() << "lll"
 
;
    while(m_guests.size() > 0)
    {
        m_guests.takeFirst()->destroyed();
    }
//    return m_guests.clear();
}

// ![0]

//這三個函式是在qml中分別操作"push" "=[]"  "[index]"  ".length"時使用的
void BirthdayParty::appendGuest(QQmlListProperty<Person>* list, Person* p) {
    qDebug() << "appendGuest2"
 
;
    reinterpret_cast< BirthdayParty* >(list->data)->appendGuest(p);
}

void BirthdayParty::clearGuests(QQmlListProperty<Person>* list) {
    qDebug() << "clearGuests";
    reinterpret_cast< BirthdayParty* >(list->data)->clearGuests();
}

Person* BirthdayParty::guest(QQmlListProperty<Person>* list, int i) {
    qDebug() << "guest";
    return reinterpret_cast< BirthdayParty* >(list->data)->guest(i);
}

int BirthdayParty::guestCount(QQmlListProperty<Person>* list) {
    qDebug() << "guestCount";
    return reinterpret_cast< BirthdayParty* >(list->data)->guestCount();
}