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CAD tip CAD tip # 2009:

Question CAD 
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Q - question

How to find in LISP which AutoCAD version has created the DWG file?

A - answer E.g. to find which AutoCAD version has written the MYDRAWING.DWG drawing, use the following code:

(setq f (open "mydrawing.dwg "r"))
(setq li (read-line f))
(setq dwgver (substr li 1 6))
(close f)

Compare the resulting dwgver variable with the version table - see TIP 868.
100% *  CAD 
2.3.2002    5656×  
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applies to: AutoCAD ·

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