Dibujar gráficos ALA Graphviz en QT a través de PyQt4 [cerrado]

You can implement a fully interactive graph with QGraphicsView. That will probably be preferable than a static image in a QLabel. Qt has un ejemplo for this particular case. You can build on it. PyQt version comes with installation inside examples/graphicsview.

Though, I don't know any ready-made widgets/api that works with graphviz.

I have made a library of Qt extension widgets - one of which is a node graph. You are able to fully define how to draw your nodes for custom looks, or can control generically via member methods. Feel free to have a look and use.

To get a feel for its look, the Orbiter application uses it to build database ORM graphs. Thats the only example at the moment - but I am planning to get more docs up in the next couple of weeks.

You can see the Orbiter app here:

http://www.projexsoftware.com/software/orbiter/

The specific class is non-application specific and is called XNodeWidget, here's the beginning docs:

http://docs.projexsoftware.com/api/projexui/widgets/xnodewidget/

And information on how to get the library can be found here:

http://dev.projexsoftware.com/projects/projexui/

Lemme know if that works out!

Otra opción podría ser utilizar networkx. It allows to create your graph, layout it and draw it (either using matplotlib or graphviz)