How do use vla-item to select an open drawing

[deheylen690271]

I have a lisp routine that creates a new drawing from the active drawing using EXPORTTOAUTOCAD, then opens it. Since I know the file name (having just created it) I want this drawing to become the active drawing using vla-item. When I run this code:

(setq Filename "C:\\ProjDir\\NewDrawing.dwg")
(vla-item (vla-get-documents (vlax-get-acad-object)) Filename) I get this error:

error: Automation Error. Description was not provided.

This code works just fine however:

(setq Filename "C:\\ProjDir\\NewDrawing.dwg")
(vlax-for dwg (vla-get-documents (vlax-get-acad-object))
(if (= (vla-get-FullName dwg) FileName) (vla-activate dwg)))

Can someone please explain how to use vla-item with a known drawing name to get the vla-object out of the documents collection?

Thanks

[Tharwat]

Hi,

Like this:

(vla-item (vla-get-documents (vlax-get-acad-object)) (strcat (vl-filename-base FileName) (vl-filename-extension FileName)))

[deheylen690271]

Thanks for the help. It turns out that my code didn't work becausr I was using some lower-case letters in my text string whereas AutoCAD was using all upper-case for the drawing name and rejecting the match. When I feed vla-item the string with all upper-case, it works fine. Seems a little bit lame to me but at least I figured it out. Thanks again.

[Tharwat]

You are welcome.

[Opie]

Thanks for the help. It turns out that my code didn't work becausr I was using some lower-case letters in my text string whereas AutoCAD was using all upper-case for the drawing name and rejecting the match. When I feed vla-item the string with all upper-case, it works fine. Seems a little bit lame to me but at least I figured it out. Thanks again.

Yes, when comparing text, the case needs to match on both sides of the comparison.

Glad you figured it out.