QWidget expanding in QGraphicsScene/View

Hello, Here is my issue. I have a CustomWidget class which inherits from QWidget and has a UI file. This widget’s main layout has its policy to x expanding, y expanding. I want this widget to fit in a QGraphicsView by taking all the space available by the view (horizontally and vertically) For that, I created a QGraphicsScene, then used fitInView form the view. Then used scene->addWidget(customwidget) The CustomWidget is centered in the view but doesnt fit it. Also, the widget’s global dimensions in the view are the same as the ones in the CustomWidget’s UI file , which means no automatic expansion … Cant figure out what’s happening here :( Cheers,