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[提问]Qt信号与槽的connect方法参数的含义 [复制链接]

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离线vechary

只看楼主倒序阅读楼主发表于: 2016-03-25

成员函数的指针作为信号和槽
static QMetaObject::Connection connect(
const QObject *sender,
PointerToMemberFunction signal,
const QObject *receiver,
PointerToMemberFunction method,
Qt::ConnectionType type = Qt::AutoConnection
);
成员函数作为信号，全局函数，lambda表达式等普通函数作为槽
static QMetaObject::Connection connect(
const QObject *sender,
PointerToMemberFunction signal,
Functor functor
);
TODO:context做什么用的？
static QMetaObject::Connection connect(
const QObject *sender,
PointerToMemberFunction signal,
const QObject *context,
Functor functor,
Qt::ConnectionType type = Qt::AutoConnection
);

最后一种重载中，connect(sender, signal, context, functor);
context是什么意思？应该如何传参？

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