OPC client with Qt

Hi!

I searched now a lot, and did not found anything about an OPC client written in Qt. So probably someone here could help me and post a link or something? I would try to write an application which displays some data from an plc, and I found only OPC sdk for the .Net framework or activeX controls... Is there someone who developed a similar application? Mainly the application should work on windows, but it would be great if its also OS independent :) I'm new to Qt and this should be my first bigger application, because I find the framework very useful and interesting, so it would be great when I can solve this...

Thank you for your help
Wilfried