QML and Qt Quick

You can use the fact that the popup's contentItem of the ComboBox is a ListView and use ScrollBar vertical attached property: Binding { target: comboBox.popup.contentItem.ScrollBar property: "vertical" value: ScrollBar { policy: ScrollBar.AlwaysOn } }

Thanks, I will try it.

on Linux (GStreamer backend) , usually udp should be used to playback the stream

https://bugreports.qt.io/browse/QTBUG-103367

Try running your application with the QML_IMPORT_TRACE set to 1 and look at the messages in the console.

That's normal. You had two applications fighting for the same resources (your application and the X server).

They should refer to the Qt AlignmentFlag enum. Therefore, you should be able to do something like this: Q_PROPERTY(int hAlign READ getHorizontalAlignment NOTIFY objectChanged) Q_PROPERTY(int vAlign READ getVerticalAlignment NOTIFY objectChanged) int MyClass::getHorizontalAlignment() { return Qt::AlignHCenter; } int MyClass::getVerticalAlignment() { return Qt::AlignBottom; } TextEdit { anchors.fill: parent text: "Hello World" horizontalAlignment: MyContextPropertyOrModel.hAlign verticalAlignment: MyContextPropertyOrModel.vAlign }

I got it, thanks

Ok I think i have got it. The following did the trick. I added anchors.fill in Sandbox.qml root item. I removed the code for view3d render mode setting from the main.qml into the sandbox.qml file so the Component.onCompleted just does this Component.onCompleted: { dynamicallyCreatedItem = Qt.createComponent('qrc:/Sandbox.qml').createObject(window, {value1: 0.5, value2:0.5, value3:0.5, value4:0.5, value5:0.5, value6:0.5, isEnabled1: false, isEnabled2: false, isEnabled3: false}) toptitle.text = dynamicallyCreatedItem.sessionText } Doing this works fine and I get the two viewports as in original code. The issue is solved. The github repo contains the correct code for anyone who is stuck.

It turns out that zoomReset() resets the scroll as well, so all the scrolling made while zommed in is reverted: (from the Docs) Note: This will also reset scrolling and explicit axis range settings specified between the first zoom operation and calling this method. If no zoom operation has been performed, this method does nothing.

Loving the attitudes here.......waiting for someone else to provide a fix, yet not one of you have bothered posting a code snippet for 'us' to look at or play with. Help us help you, the more info you give, the better the help is likely to be and if dragthreshold doesn't work, why are only 5 people complaining about it?, I suggest your code is mising something.