QGraphicsScene scene; scene.setBackgroundBrush(Qt::gray);
QGraphicsScene scene; QLinearGradient gradient(0, 0, 0, 100); gradient.setColorAt(0, Qt::white); gradient.setColorAt(1, Qt::black); scene.setBackgroundBrush(gradient);
QGraphicsScene scene; QPixmap pixmap(":/images/image.png"); QBrush brush(pixmap); scene.setBackgroundBrush(brush);This code sets a textured image as the background of the QGraphicsScene. Overall, QGraphicsScene setBackgroundBrush is a versatile and essential function for setting the background of the QGraphicsScene. It is part of the Qt library's QGraphicsScene package.