回帖：assistant上面都是有成员构造的函数:
QHostAddress Class
.......
QHostAddress()
QHostAddress(quint32 ip4Addr)
QHostAddress(quint8 * ip6Addr)
QHostAddress(const Q_IPV6ADDR & ip6Addr)
QHostAddress(const sockaddr * sockaddr)
QHostAddress(const QString & address)
QHostAddress(const QHostAddress & address)
QHostAddress(SpecialAddress address)
~QHostAddress()