Problem with displaying graphs on a Qt canvas

Question

Let's say I'm a Qt newbie. I want a good Qt library for displaying simple graphs. I've found the quanava library. But there is a problem. When I compiled a basic example it looks like graph edges are not painted properly when moving nodes. I don't have any idea where is a bug but this code seems to be rather simple. I think this is a problem with paint method in NodeItem class. Maybe someone has already solved this problem because this library is quite popular.

Answer 1

I usually go for Qwt for my graphing needs - a bit technical for "office graphs", but still, it works.

Answer 2

+1 for Qwt. It gets the job done, and is pretty configurable. The documentation is weak, but the number of examples are extensive enough to make up for it.

Answer 3

Ok, first of all saying graph i mean mathematical concept G=(V,E). I improved quanava library, which is a very good starting point for graph visualization.