Qt 如何将QML中声明的信号连接到C++；方法或lambda

我在QML中声明了如下矩形：

Rectangle {
        objectName: "myquickitemobject"
        signal doSomething
        MouseArea {
            anchors.fill: parent
            onClicked: { 
                doSomething() 
            }
        }
    }

QQuickItem *my_quickitem = m_qml_item_root->findChild<QQuickItem*>("myquickitemobject");
QObject::connect(my_quickitem, SIGNAL(doSomething()), this, SLOT(DoSomething()));

可以将MyQuestItObjult/Cube >类似C++ <

// main.cpp
QQuickItem *my_quickitem = m_qml_item_root->findChild<QQuickItem*>("myquickitemobject");

---

在类中声明如下所示的插槽：

Q_SLOT void DoSomething() {
    std::cout << "Do something" << std::endl;
}

Q_槽空DoSomething（）{
标准：：cout
QQuickItem *my_quickitem = m_qml_item_root->findChild<QQuickItem*>("myquickitemobject");
QObject::connect(my_quickitem, SIGNAL(doSomething()), this, SLOT(DoSomething()));