Qt QGraphicsDropShadowEffect is not showing

Question

I am creating a custom widget my_widget inheriting from QWidget.

Here, I have a label to which I would like to apply QGraphicsDropSha

Answer 1

Works for me in C++. I did the following in a QDialog containing a QLabel object named titleLabel. I'm using Qt 4.8.4 on a Windows XP computer.

QGraphicsDropShadowEffect* eff = new QGraphicsDropShadowEffect(this);
eff->setBlurRadius(5);
titleLabel->setGraphicsEffect(eff);