qt5在收到信号后新建一个按钮，右键按钮会弹出菜单，一个为连接一个为断开，点击连接会发送按钮的属性到连接函数

可以按照以下步骤来实现：

1. 在信号的槽函数中，新建一个按钮并设置其属性：

void MyClass::onSignalReceived()
{
    QPushButton *newButton = new QPushButton(this);
    newButton->setText("New Button");
    newButton->setObjectName("myButton"); // 设置对象名为 myButton
    connect(newButton, SIGNAL(clicked()), this, SLOT(onButtonClicked()));
}

2. 在槽函数中创建一个右键菜单，并将连接和断开操作添加到菜单中：

void MyClass::onButtonClicked()
{
    QPushButton *button = qobject_cast<QPushButton*>(sender()); // 获取触发信号的按钮
    QMenu *menu = new QMenu(this);
    QAction *connectAction = new QAction("Connect", this);
    QAction *disconnectAction = new QAction("Disconnect", this);
    menu->addAction(connectAction);
    menu->addAction(disconnectAction);
    connect(connectAction, SIGNAL(triggered()), this, SLOT(onConnectClicked()));
    connect(disconnectAction, SIGNAL(triggered()), this, SLOT(onDisconnectClicked()));
    menu->exec(button->mapToGlobal(QPoint(0, button->height()))); // 显示菜单
}

3. 实现连接和断开操作的槽函数，并在其中获取按钮的属性：

void MyClass::onConnectClicked()
{
    QAction *action = qobject_cast<QAction*>(sender());
    QMenu *menu = qobject_cast<QMenu*>(action->parent());
    QPushButton *button = qobject_cast<QPushButton*>(menu->parent());
    QString buttonName = button->objectName(); // 获取按钮的对象名
    // 进行连接操作
}

void MyClass::onDisconnectClicked()
{
    QAction *action = qobject_cast<QAction*>(sender());
    QMenu *menu = qobject_cast<QMenu*>(action->parent());
    QPushButton *button = qobject_cast<QPushButton*>(menu->parent());
    QString buttonName = button->objectName(); // 获取按钮的对象名
    // 进行断开操作
}