You are passing an AcadDatabase COM object, and
expecting to receive a Database managed wrapper
for AcDbDatabase. I don't think so.
If you're making an assumption like that, then I
would suggest making an investment in learning
a bit more about the .NET managed wrapper API,
before attempting any significant development
with it, beyond simple band-aids. Contrary to
what may have been implied by 'managed', the
possiblity of crashing AutoCAD is quite good even
with the safety net provided by managed code.
See the Database.FromAcadDatabase() method.
AcadXTabs: MDI Document Tabs for AutoCAD 2004/2005/2006
"Terry W. Dotson" wrote in message news:email@example.com...
I'm trying to use VBA to call a VB.NET sub, and pass a drawing database
as a parameter. I've included a string passed MyTestSub1 to verify that
the communication is there, and the alert dialog shows.
However when trying to pass a drawing database I get an error indicating
it "does not support expected interface".
Can "db As Autodesk.AutoCAD.DatabaseServices.Database" be used as an