QQuickWidget size

[Mark81]

I don't understand how to handle sizes of a QQuickWidget. For example I place it in a QTabWidget:

QQuickWidget _formOverview;
_formOverview.setSource(QUrl("qrc:/qml/main.qml"));
_formOverview.setResizeMode(QQuickWidget::SizeRootObjectToView);
_formOverview.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
ui->tabView->addTab(&_formOverview, tr("Overview"));

main.qml file:

import QtQuick 2.11

Rectangle {
    anchors.fill: parent
    visible: true
    color: "blue"
}

but the size of the rectangle is 0,0.
How to fill the whole area?

[Yunus]

@Mark81 Hi. Did you try to add 'width and height' parameters to the rectangle?

[J.Hilk]

@Mark81

try it without the anchors.fill: parent

Usually, for me at least, the root item of a QQuickWidgets qml file does not have a size specified and matched the parent QQuickWidget automatically.

If I remember correctly, that QQuickView doesn't do that and you would have to specify a size for the root element.

[Mark81]

@Yunus said in QQuickWidget size:

@Mark81 Hi. Did you try to add 'width and height' parameters to the rectangle?

Of course it would work, but I don't want a fixed size! I want to fill the actual area of the parent.

[Mark81]

@J.Hilk said in QQuickWidget size:

try it without the anchors.fill: parent

Usually, for me at least, the root item of a QQuickWidgets qml file does not have a size specified and matched the parent QQuickWidget automatically.

If I remember correctly, that QQuickView doesn't do that and you would have to specify a size for the root element.

You're right. It works!
I didn't find this information in the documentation, and it's not so intuitive!