Empty parameter using C++ --> OpenCatalog/Ex

[oldhenry]

Hi out there !
Does anybody know how to use "opencatalog" / "opencatalogEx"
with C++ using Impromptu as a com-server ?
I got to use parameters AccmanSignonName + AccManPassword,
(which are parameter 8 & 9)
but not "DistributedCopyFilePath", as our catalog isn't distributed.

Using
pAppAuto->OpenCatalogEx (strKatalog,pD1,pDummy,pDummy,pDummy,"0", (char *)NULL,pUser,pPassword);
will result in an exception, telling me that because of the
"non distributed catalog" parameter 7 is not allowed.

So, the problem is how to tell impromptu that the 7th parameter isn't there.

Thanks a lot

Oldhenry