Did you consider using the QtGraphicalEffects module ?

@Kinesis You should delete them when they are not needed anymore

@mrjj i think i'll just write the code :p will do tomorrow and see what i get, thanks!

OK
found a solution, for those interested, it's based on the fact that maybe the root item can't access the handle but the handle on the other hand can access the root item. So I created a binding between handle's state and slider's state :

Slider { anchors { fill: parent margins: 10; } id: slider value: 0.5 style : SliderStyle { groove: Rectangle { id: background /* ... */ } handle: Rectangle { id: handle /* ... */ opacity: 0.0 // Bind slider's state and handle's state state: slider.state == "hovered" ? "hovered" : "" states : [ State { name: "hovered" PropertyChanges { target: handle ; opacity: 1.0 } } ] } } MouseArea { anchors.fill: parent hoverEnabled: true onEntered: { slider.state = "hovered" } onExited: { slider.state = "" } } states: [ State { name: "hovered" } ] }

First of all I have never done what you wanted, so my advises might not work well

You might want to override :

void QAbstractScrollArea::setupViewport ( QWidget * viewport ) [protected slot]
This slot is called by QAbstractScrollArea after setViewport(viewport) has been called. Reimplement this function in a subclass of QAbstractScrollArea to initialize the new viewport before it is used.

You can actually either hide scrollbar provided by QAbstractScrollArea and display your own instead or subclass scrollbar and set it to itemView.

Hi,

Did you check the values that you are sending ? Do you have any code running on the Arduino that your wrote ?