Hi bernardo

Just reading an archive mail so this might arrive late for you.

A way to control QC from PD through OSC would be to 

create the QC project and load it into a SuperCollider window

(SuperCollider has a QC view). You then send your OSC

messages to a OSCresponderNode in SuperCollider that

redirects your message to the QC view.

No MIDI involved, thank the gods.

Good luck

thor