O'Reilly logo

Game Programming Using Qt by Lorenz Haas, Witold Wysota

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Time for action – rendering the scene's content to an image

Let's try to render a scene to an image. In order to do that, we take the following code snippet from our first example where we tried to put items on a scene:

QGraphicsScene scene;
QGraphicsRectItem *rectItem = new QGraphicsRectItem();
rectItem->setRect(0,0,50,50);
rectItem->setBrush(Qt::green);
rectItem->setPen(QColor(255,0,0));
scene.addItem(rectItem);

The only change we make here is that we set a brush resulting in a green-filled rectangle with a red border, which was defined through setBrush() and setPen(). You can also define the thickness of the stroke by passing a QPen object with the corresponding arguments. To render the scene, you only need to call render(), which takes a pointer ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required