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From: jgb@prism.gatech.EDU (James G. Baker)
Newsgroups: comp.databases
Subject: Re: So does Clipper do it ?
Message-ID: <29638@hydra.gatech.EDU>
Date: 22 May 91 18:42:02 GMT
References: <77135@eerie.acsu.Buffalo.EDU> <24910@well.sf.ca.us>
Organization: Georgia Institute of Technology
Lines: 24

In article <24910@well.sf.ca.us> kms@well.sf.ca.us (Kelly Stanonik) writes:
>Well, first of all, what version of Clipper are you trying to use?  Second
>of all you can index on a function to display the update bar.  I personally
>shy away from this approach since it places garbage in your index key, but
>it will work. 

Very true.  BUT, you can use low-level file calls to change to index
expression in the .NTX file.  fopen, fread, fwrite.  I have an index routine
that does an INDEX ON expression+stat_bar() TO index_file and then calls
a function to clean up the index_file.  (Places a null right after it finds
"expression".  Might seem a bit dangerous, but it works.  Of course your
stat_bar() needs to handle what ever type expression is and return 0 or ""
appropriately after to displays the status bar.

I've got code, if anyone is interested.  Hmmm... the xbase news seems 
to be growing... maybe it is time for a comp.databases.xbase or
comp.databases.sources.

-J Baker
-- 
BAKER,JAMES G - Undergraduate Lab Instructor, School of Electrical Engineering
____  _    _    Georgia Institute of Technology, Atlanta Georgia, 30332
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