Nice help indeed. I was trying myself.
DWGicon.dll from the first link for some reason don't give result on my pc under windows xp pro sp3 32 bit.
So, the simple and effective solution of : Open the file in Notepad (or some other ASCII or HEX editor) and read the first 6 bytes , offered by your second link is perfect.
I have tried two programs more from http://www.cadstudio.cz/dl_file.asp?ID=111
(is not english, seems from Polland and the option to examine and browse to the dwg to study is : prochÃ¡zet
But for me is equal or less confortable than the simple and effective solution of the notepad and read the first 6 bytes)http://www.jmsware.com/index.html
The AVE is perfect as a browser for the occasion. And with a look we can determine the version of several files.
and the other program
AcadPVI Shell Extension from the same web I am having problems just now because distort the contextual menu. .... :
A Screenshot :
Shutdown and enter again don't solve the issue.....
Thank a lot for your help.