I posted this question yesterday, but do not see it in my list of messages so reposting....


I have a class defined for com interop with a .net dll which works great -- i hook into the events and can pass to/from the .net dll and fire events in vfp from the .net dll.

The issue is Windows 7 64 versus 32 bit. The .net dll is always installed in the program files unless of course it is 64 bit windows which then installs into program files (x86).....

In the DEFINE CLASS section, I have to point to the .tlb in the IMPLEMENTS statement

If I point explicitly to the location:

DEFINE CLASS AppEvents AS SESSION
IMPLEMENTS iEvents IN "C:\Program Files\netappdirectory\filename.tlb"

or

IMPLEMENTS iEvents IN "C:\Program Files (x86)\netappdirectory\filename.tlb"

both work fine.

However in the class definition, I cannot use (syntax errors -- not allowed):

IF DIRECTORY(look for x86) AND FILE() etc...
IMPLEMENTS iEvents IN "C:\Program Files (x86)\netappdirectory\filename.tlb"
ELSE
.....
ENDIF

But I can:
before class definition: lcNetDirfile = "C:\Program Files....."
and then in the class definition do this:

IMPLEMENTS iEvents IN (EVALUATE(lcNetDirFile))

however, it doesn't really work. It builds fine (no errors), but doesn't really work. I cannot hook into the events.

I need a way to have a conditional use of implements in the class definition....

Any ideas?