Qt 信号槽交互。

Question

如果我想使用私有对象的信号来产生其父对象的信号，我会执行以下操作：

1. I create a signal and a slot (named, let's say, ParentSignal, ParentSlot)
2. connect(private_objcet, SIGNAL(someSignal()), this, SLOT(ParentSlot()));
3. and define parent slot like this:

void ParentSlot()
{
    emit ParentSignal();
}

有没有办法直接做这个过程，即不用ParentSlot？

Answer 1

QObject::connect(private_object, SIGNAL(someSignal()), this, SIGNAL(ParentSignal()));

见http://doc.qt.io/qt-5/qobject.html#connect