How do I add a QGraphicsScene to a QGridLayout?

I have this:

Code:

---

class MainWidget(QWidget):
    def __init__(self):
        self.tree = TreeArea(self)
        self.display = DisplayArea(self)
 
        gridLayout = QGridLayout()
        gridLayout.addWidget(self.tree, 0, 0)
        gridLayout.addWidget(self.display, 0, 1)

---

where TreeArea is:

Code:

---

class TreeArea(QTreeWidget):
    def __init__(self, parent):
        QTreeWidget.__init__(self, parent)

---

and DisplayArea is:

Code:

---

class DisplayArea(QGraphicsScene):
    def __init__(self, parent):
        QGraphicsScene.__init__(self, parent)

---

Qt doesn't like it when I do gridLayout.addWidget(self.display, 0, 1) since self.display does not inherit QWidget. So how do I add a QGraphicsScene to a layout?

you can add only widgets to a layout. Widgets are those you see on the screen. A QGraphicScene is a model class; in other words stores information/data about a scene. You should create a QGraphicsView and add that to the layout.

QGraphicScene is for rendering designing area for QGraphicsView() . so instaed of adding QGraphicsScene u first design a QGraphicsView() with the QGraphicsScene and add that graphicsView to your widget mainwindow

Thank you, that has worked.