Issue with opening PDF file from FilePro

[Bill Campbell]

On Thu, May 28, 2009, Kenneth Brody wrote:
>Bob Rasmussen wrote:
>[...]
>>> 2.  How do I check if a file can be opened in R/W mode in FP?
>> 
>> I don't know this one.
>
>As someone else answered, use OPEN(filename,"rw") and check for success or 
>failure.
>
>Might I suggest a "better" solution, which requires a change to PrintWizard? 
>  I have seen numerous cases where the program generating the file uses a 
>temporary filename while the job is running, and then renames it to the 
>final name once it is complete.
>
>For example, PrintWizard creates "~~PW####.tmp" (where "####" is some unique 
>number), and writes the PDF output there.  Once you have a complete PDF file 
>generated, you close the file and rename it "whatever.pdf".

This is pretty standard practice when creating/updating files,
particularly where one needs to do it as an ``atomic'' process
such that the file, when visible, is intact and consistent.

As an example, the rsync program basically does binary diffs to
``patch'' an existing file, creating a new version that isn't
normally visible (e.g. it starts with '.filename'), then does a
*nix ``mv'' or rename command when the file is complete.

Bill
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