Hello,

Does anyone have a technique to determine if a pdf file is in use (i.e. open in 
a pdf reader or editor)?

I know that if the file is in use, OUTPUT filename.pdf causes an error in 
R:Base. Therefore, this can be used to determine if the file is in use. 
However, if the file exists and is not in use, OUTPUT filename.pdf deletes the 
contents of the file. Is there a non-destructive way to check?

Thanks for any help with this.


Regards,

Stephen Markson
The Pharmacy Examining Board of Canada
416.979.2431 x251

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