QT Display a QWidget above QGraphicsScene - c++

Question

Currently I have a QGraphicsScene that is put inside a QGraphicsView and is shown on the display. I add all my elements to my scene that I set as the active scene.
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QGraphicsView w;
GameScene *gameScene = new GameScene(); // GameScene extends QGraphicsScene, adds tons of elements to the scene
w.setScene(gameScene);
w.show();
return a.exec();
}
Above this scene I want a bar that contains several layout elements, like several QProgressBar.
For what I have found so far, QWidget's can be positioned easily. I've made already a widget of what I need to be displayed above the scene:
QWidget *dummyWidget = new QWidget();
QFormLayout *formLayout = new QFormLayout;
QProgressBar *bar1 = new QProgressBar();
QProgressBar *bar2 = new QProgressBar();
bar1->setValue(20);
bar2->setValue(100);
formLayout->addRow("&Health:", bar1);
formLayout->addRow("&Energy:", bar2);
dummyWidget->setLayout(formLayout);
dummyWidget->show();
But how do I get this to be displayed above my QGraphicsScene?

Answer 1

If you want to display your widget above the view you can have a layout similar to the one for dummyWidget and add the widget and view in it :
QGraphicsView w;
QWidget *widget = new QWidget();
QFormLayout *formLayout2 = new QFormLayout(widget);
QWidget *dummyWidget = new QWidget();
QFormLayout *formLayout = new QFormLayout;
QProgressBar *bar1 = new QProgressBar();
QProgressBar *bar2 = new QProgressBar();
bar1->setValue(20);
bar2->setValue(100);
formLayout->addRow("&Health:", bar1);
formLayout->addRow("&Energy:", bar2);
dummyWidget->setLayout(formLayout);
formLayout2->addRow("", dynamic_cast<QWidget*>(dummyWidget));
formLayout2->addRow("", dynamic_cast<QWidget*>(&w));
widget->show();
If you want to add the widget in the scene, you can use QGraphicsScene::addWidget which creates a new QGraphicsProxyWidget for widget, adds it to the scene, and returns a pointer to the proxy :
QGraphicsProxyWidget * item = gameScene->addWidget(dummyWidget);
item->setPos(100,100);
item->setZValue(1);
You can also add it to an item :
item->setParentItem(anOtherItem);