>George,
>
>there are 2 vfp 7 runtimes (vfp7t and vfp7r). For the desktop part of my application the vfp7r is needed and for the (multithreaded) component the vfp7t because the non-blocking structure. can there be a problem with that?
>Can I force the usage of one of them?
>What I don't understand is that the same sourcecode built under windows 98 to a multithreaded dll doesn't give the problem whereas the same built under windows 2000 DOES.
>The only difference was, I recall, the tlb compiled into the dll under windows 2000?
>
>regards,

Erwin,

If you place the VFP7T.dll in the same folder with your in-process COM DLL, it will use that since it searches its own folder first prior to checking the system directory.

If you do a search in the VFP 7.0 help on vfp7t.dll, you'll get several items returned. I think that, in your case, the first three, which cover the two run times and how VFP chooses which DLL, should answer your questions.