acad2000 vs 2004 lib ref

win2k
both 2002 and 2004 installed

vb project with a reference to acad2004 lib
acad2002 running

this line returns error
Set moAcad = GetObject(, "AutoCAD.Application")

how to make version agnostic?

 

You can't do this, because GetObject() is
looking for a running instance of AutoCAD,
using the curver setting in the registry,
which is set to AutoCAD 2002 when its started.

 

so i need two versions of any given project - one that references 2002 and
the other that refs 2004 or 5 etc?

or would this work?
On Error Resume Next
Set moAcad = GetObject(, "AutoCAD.Application")
If err then
err.clear
Set moAcad = GetObject(, "AutoCAD.Application16")'or whatever the
right reference is
If err then
err.clear
Set moAcad = GetObject(, "AutoCAD.Application1X")'etc

....probably not if the 2004 lib is referenced and 2002 is running.
And i'm sure it wouldn't work if 2002 was referenced and 2004 was running.

so is that a reason to not reference libs and use late binding?
in which case the on error thing above might work?

 

Mark - If one is running, you are probably stuck.

You will probably need 2 versions of your app.

 

Thanks