CR 8.5 to CR 10 in Visual C++

Hello,

I have an application in Visual C++ working with CR 8.5. To do it, I'm using crpe.h, cpre32m.lib,... but in CR10 these files don't exist.
In CR 10, the print engine is replaced by RDC.
My question is , can I use RDC without use managed code? All samples on Crystal work with managed code but I can't use in my application !!!!
How can I link my application to the new print engine?

Thanks a lot for your helpDid you ever find the answer to this question?? I have the same issue.|||See if you find solution here
http://support.businessobjects.com/|||how do i refresh crystal report data through codes|||CR.Refresh

where CR is the Crystal Reports component