Re: More GPL questions

[Alfred M. Szmidt]

   >    This example program would dynamically link to both Qt and my
   >    sdk's library.
   >
   > This would make this non-free SDK library a derivate of Qt and
   > the example program.

   I disagree. 

And the FSF disagrees with you.  From the GPL FAQ
(http://www.gnu.org/licenses/gpl-faq.html):

Q: You have a GPL'ed program that I'd like to link with my code to
build a proprietary program. Does the fact that I link with your
program mean I have to GPL my program?

A: Yes.