QtObject QML Type▲
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Import Statement: import QtQml
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Inherited By:: Action, ActionGroup, ButtonGroup, ColorGroup, Dialog, Direction3D, EmitBurst3D, GraphicsApiFilter, Item, ItemGrabResult, KeyboardStyle, Keyframe, KeyframeGroup, Menu, MenuBar, MenuItem, MenuItemGroup, MorphTarget, Object3D, ParticleAbstractShape3D, ParticleSystem3DLogging, PdfStyle, Popup, SplitHandle, SpriteSequence3D, StandardPaths, StencilOperationArguments, StencilTestArguments, SystemInformation, SystemTrayIcon, and Timeline
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Instantiates:: QObject
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Group: QtObject is part of qml-utility-elements
Detailed Description▲
The QtObject type 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 type to enclose a set of custom properties:
import QtQuick 2.0
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.
Property Documentation▲
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 2.0
Item {
width: 200; height: 200
Rectangle {
anchors.fill: parent
color: "red"
objectName: "myRect"
}
}// main.cpp
QQuickView view;
view.setSource(QUrl::fromLocalFile("MyRect.qml"));
view.show();
QQuickItem *item = view.rootObject()->findChild<QQuickItem*>("myRect");
if (item)
item->setProperty("color", QColor(Qt::yellow));