title: Create directed Graph with movable nodes (with QT / Boost)
body: <p>I'm looking for a tool to create directed graphs where I can move the nodes around and expand / shrink the graph when I, for example, click on a node. I want to use the graph in a QT interface. I thought about trying the Boost Graph Library but it seems that I can only create an image file of the graph with it. I'm not that deep into BGL yet; so does anybody know if its possible to greate graphs with BGL where I can move the nodes around afterwards? And is it possible to use it in QT? Or are there other tools?</p>