Adding QGraphicsView to QVBoxLayout

[stampede]

What are you doing with the layout after adding QGraphicsView ? You need to set it on a widget:

QLayout * layout = new QVBoxLayout();
QGraphicsView * view = new QGraphicsView();
layout->addWidget(view);
QWidget * w = new QWidget();
w->setLayout(layout);
w->show();

QLayout * layout = new QVBoxLayout();
QGraphicsView * view = new QGraphicsView();
layout->addWidget(view);
QWidget * w = new QWidget();
w->setLayout(layout);
w->show();

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