I created a dialog with shadow effect
Qt::WindowFlags flags = Qt::Dialog| Qt::FramelessWindowHint;
QGraphicsDropShadowEffect* effect = new QGraphicsDropShadowEffect;
effect->setOffset(4);
effect->setBlurRadius(9);
contWdget->setGraphicsEffect(effect);
This works perfect on windows but when I open the same dialog in Linux its showing dark black color border around the dialog.
What work around I need to do to make it work on Linux.