How to communicate btw QGraphicsScene and QTreeWidget

[Cal]

Hey,

i wanna know whats the best way to communicate between a QGraphicScene and a QTreeWidget.

I have a QTreeWidget containing some QTreeWidgetItems and a QGraphicsView containing some QGraphicsItems, representing the positions of the items shown in the QTreeWidget.

What i want to do: if you select an item in the TreeView, the corresponding GraphicsItem in the GraphicsView should be selected. and the other way around: select an item in the graphics view and the corresponding QTreeWidgetItem should be highlighted.

I created a class which inherits both QGraphicItem and QTreeWidgetItem, but i couldnt figure out how to connect the view and the treewidget properly.

Maybe you have some ideas?

Greetings,
Lutz