C++ signal to QML slot in Qt

You should use Connections in this case (maybe it’s the only way to connect).

1. Put your object myObj to QML file by setContextProperty

   qmlVectorForm->rootContext()->setContextProperty("YourObject", myOb);
   

2. Your signal is

   finishedGatheringDataForItem(QString signalString)
   

3. In QML file, add Connectios likes below:

   Connections {
       target: YourObject 
       onFinishedGatheringDataForItem: {
           qmlString = signalString
       }
   }