VLA & VLAX (unknown functions)

Hello. I attempted to use a vla function in a LISP routine and kept
receiving an unknown function error. Do I need to load in a reference
before using the vla & vlax libraries similarly to VBA? If so, which one?
Any help on this would be greatly appreciated.

Regards,
Steven Craig Basham

 

You must run (vl-load-com) at least once in a drawing prior to using vla-,
vlax-, vlr- functions. I've added to my acaddoc.lsp to make sure it's always
loaded.

HTH,
Jeff

 

Just a bit of a clarification: (vl-load-com) only needs to run once per
_AutoCAD_ session; it does not need to be run with each drawing. However,
there is certainly no problem in doing so, right Jeff?! ;^)

--
R. Robert Bell


You must run (vl-load-com) at least once in a drawing prior to using vla-,
vlax-, vlr- functions. I've added to my acaddoc.lsp to make sure it's always
loaded.

HTH,
Jeff

 

Heh,
Drawing/Session, aren't they the same thing Uhm, what he said ^^^^^

 

My 2 cents:

AutoCAD_Session = call acad.exe
Drawing Opened = just that.

You (can) load (vl-load-com) either with 'start' of AutoCAD,
or (foreach) drawing open..in acaddoc.lsp. Either way.
If it is already 'loaded', it just returns nil, with virtually no delay.

Bob

 

Actually, if successful, it always returns a SYM, just like (princ).
So you can use it in a Kosteresque fashion, sorta like ...
(and
(or
(= (type vl-load-com) 'SUBR)
(prompt "\nvl-load-com is not a function")
)
(= (type (vl-load-com)) 'SYM)
(print "OK so far")
)

That wasn't meant to be an all-encompassing example of bullet-proofing, but just
a little pointer.
Hmmm... it's really kinda stupid since if VL.ARX is missing the whole AutoLisp
thing seems to go kaput. :/

 

<snort>

--
R. Robert Bell


....
Hmmm... it's really kinda stupid since if VL.ARX is missing the whole
AutoLisp
thing seems to go kaput. :/