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29

answers:

1

I'm trying to display a little square of solid color.

I've created a QGraphicsView widget myGraphicsView and call:

ui->myGraphicsView->setBackgroundBrush(QBrush(Qt::red, Qt::SolidPattern));

But it stays white. What am I doing wrong?

+1  A: 

You need to set the QGraphicsScene to the QGraphicsView before anything is drawn:

ui->myGraphicsView->setScene(myScene);
Roku
yes, and set the background brush on the scene then.
Frank