There are some useful LISP programs out there that place object
references into fields for doing calculations like area and
perimeter, but they all depend on obtaining the ObjectId
of an entity. The function that is always used,
(vla-get-objectID entity), is visual lisp / activeX, so
it only works on Windows platforms. Is there a way to get the
ObjectId with mac autolisp? Alternatively, is there another way
to put an object reference inside a field?
Using AutoCAD for Mac, 2017 version.