QML QtObject Element

This property holds the QObject::objectName for this specific object instance.

This allows a C++ application to locate an item within a QML component using the QObject::findChild() method. For example, the following C++ application locates the child Rectangle item and dynamically changes its color value:

 // MyRect.qml

 import QtQuick 1.0

 Item {
     width: 200; height: 200

     Rectangle {
         anchors.fill: parent
         color: "red"
         objectName: "myRect"
     }
 }

 // main.cpp

 QDeclarativeView view;
 view.setSource(QUrl::fromLocalFile("MyRect.qml"));
 view.show();

 QDeclarativeItem *item = view.rootObject()->findChild<QDeclarativeItem*>("myRect");
 if (item)
     item->setProperty("color", QColor(Qt::yellow));