默认情况下，从工作线程发出 Qt::signal 会使主线程上的 UI 更新?

I am new to Qt. I have worker thread that is an std::thread. The worker thread function continuously fetches some some data in a loop. The size of the data is frequently updated on a Text element on a QML UI. I have a listener callback which is nothing but an std::function and it gets called from the thread's function. It sends me callbacks based on which I updated the Text element on QML. I update it using signal slot mechanism.

以下是 QML : Text 元素:

Text {
  id: mytext
  objectName: "mytextobject"

  function slotUpdateData(someValue){
    mytext = someValue
  }
}

SignalUpdateData 与位于 QML 端的 slotUpdateData 相连.每次我从 std::thread 获得数据事件回调时，我都会 发出 SignalUpdateData，它会更新 UI 上的 QML 文本元素.

void CallBackReceivedFromWorkerThread(float someValue) {
  emit SignalUpdateData(someValue)
}

QObject::connect(this, SIGNAL(SignalUpdateData(QVariant)), myTextItemQObject, SLOT(slotUpdateData(QVariant)));