How to adapt Item size to a QWidget

Fheanor

Hello,

I try to put an Item (a Rectangle for example) in a QQuickWidget that I will put in a QDockWidget.
My problem is that if I resize my QDockWidget, I don't know how to say to the Rectangle to adapt its size.
When I use QML, I can fixanchors on parent but because the QMLrectangle is fixed on a QWidget, I don't know how to fix anchors on a "non" qml object.

For example, if my QDockWidget is 400x400 sized, I can fix manually my Rectangle size to 400*400. But I would like that if I change my QDockWidget size during the execution that the Rectangle size is automatically changed.

I can give you a code example if my explanation is not clear.
Thanks a lot !

SGaist

Hi,

AFAIK, just create your QtQuick GUI as usual and load it in the QQuickWidget.

ambershark

@Fheanor As long as your rectangle fills the dock widget it should resize on it's own.

I.e.

Rectangle {
   anchors.fill: parent
   color: "black"
}

That should resize with the container just fine with no extra work from you. Just a guess though, didn't actually confirm it. ;)

Fheanor

@ambershark said in How to adapt Item size to a QWidget:

@Fheanor As long as your rectangle fills the dock widget it should resize on it's own.

I.e.
Rectangle {
   anchors.fill: parent
   color: "black"
}
That should resize with the container just fine with no extra work from you. Just a guess though, didn't actually confirm it. ;)

Hello, I tried this solution but it didn't work because parent is not defined.

I finally found a solution:
In QML I do not need to do anything:

Rectangle {
      color: "black"
    //Nothing else to do
}

And then in my cpp file where I use my DockWidget:

    QQuickWidget *view = new QQuickWidget;
    view->setSource(QUrl::fromLocalFile("qmlFile"));
    view->setGeometry(0, 200, 600, 400);    //This is where you set the size
    view->setResizeMode(QQuickWidget::SizeRootObjectToView);  //Note that it also works with QQuickView for example !

    dockWidget->setWidget(view);

Thanks a lot for the help and have a good day !