Is there a datafollow ptojerct for qt?

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QT

signal

hi,for my work,i should programming a dataflow programming project.
my question is there for Qt a framework dataflow programming that is easy .
too i can fast develop it?
i need a framework that their code is clear,not our team should decode it?

What I have tried:

i too saw :
good examples for starting in Qt:

The Diagram Scene Example
Elastic Nodes Example

a Qtnodeeditor
http://nukengine.com/qt-node-editor/
graphviz
http://www.graphviz.org/Download_windows.php

but they are not complete.