I think you need to read this
It explains how to get a link to a qml object in the section "Loading QML Components from C ++"
QML - , , , . QML QObject:: objectName QObject:: findChild(). , MyItem.qml Rectangle:
, , -
QObject *object = yourview.rootObject();
QObject *your_obj = object->findChild<QObject*>("yourobjName");