The QtObject element is the most basic element in QML. More...
QtObject instantiates the C++ class QObject
The QtObject element is a non-visual element which contains only the objectName property.
It can be useful to create a QtObject if you need an extremely lightweight element to enclose a set of custom properties:
import QtQuick 1.0
Item {
QtObject {
id: attributes
property string name
property int size
property variant attributes
}
Text { text: attributes.name }
}
It can also be useful for C++ integration, as it is just a plain QObject. See the QObject documentation for further details.
objectName : string |
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));