object->setProperty not working QML C++

AmalRaj

Hi All

I am trying to change QML loader visibie property from true to false from c++ code and its not working here is the code attached. please give me some suggestions.

#Game.qml

GameForm {
    Loader {
        id: scene1
        objectName: "scene1"
        source:"GameIntro.qml"
        visible: true
    }
    Loader {
        id: scene2
        objectName: "scene2"
        source:"GameBoard.qml"
        visible: false
    }
}

#Game.cpp

QQmlEngine engine;
QQmlComponent component(&engine, QUrl(QStringLiteral("qrc:/Game.qml")));
QObject *object = component.create();


QObject *scene1 = object->findChild<QObject*>("scene1");
if(scene1)
{
        qDebug() << "Entered here";
        scene1->setProperty("visible", QString("false"));
       //scene1->setProperty("visible", false);
}

When i run this "Entered here" is coming. but the visible property not working.

Note: i tested without passing as string too.

Thanks for your help.
Amal

p3c0

Hi @AmalRaj and Welcome,
Whenever you create an item using QQmlComponent and create you must set it a visual parent using setParentItem. For that you will need to cast it to QQuickItem otherwise it wont be displayed

QQmlComponent component(&engine, QUrl(QStringLiteral("qrc:/Game.qml")));
QQuickItem *object = qobject_cast<QQuickItem*>(component.create());

Then try setting its properties.

P.S: The forum use markdown syntax. So while posting code surround it with ``` (3 backticks) so that it appears more readable. I have edited it this time.