One data point about Apple's preference: Safari's Bookmarks menu uses a "globe" icon for pages that lack their own icon, and that monochrome globe icon does switch between light and dark when selected.

@BigBen
When you go QMenu::addAction("SomeString") it creates a QAction for you, and returns it. And QMenu::exec() returns the QAction which was clicked. So you could check which one is returned and act on it, like:

QAction *hideAction = myMenu.addAction("Hide"); QAction *showAction = myMenu.addAction("Show"); QAction* selectedAction = myMenu.exec(globalPos); if (selectedAction == hideAction) qInfo() << "Hide"; else if (selectedAction == showAction) qInfo() << "Show";

Alternatively, when you create the QActions you could attach a slot to its triggered signal:

connect(hideAction, &QAction::triggered, this, []() { qInfo() << "Hide"; } );

You could use a QRubberBand to setup the line and once you release it add the QGraphicsLineItem to your scene.

Hi, well the case is that I was trying to build mumble with QtCreator and I couldn't get it to build the application, I thought why not set it using stylesheet. I'll have to fight with Qt again, thanks for your reply.

@onek24

For the benefit of anyone finding this post, I found a much simpler solution for attaching information to a menu action :

void QAction::setData(const QVariant & userData) QVariant QAction::data() const

I currently prefer it over the much heavier solution of implementing a custom QAction class.

I would try on this snippet , Hope it works well.

@Korchkidu For me it works with both.