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  • Subject: Re: PRTF Overflow
  • From: "Peter Dow" <pcdow@xxxxxxxxx>
  • Date: Sat, 11 Dec 1999 13:41:20 -0800

Just after I sent that it occurred to me that if you're worried about
someone changing the printer file used by your programs, do you also handle
changed page widths, font sizes, etc.? How far do you go?

----- Original Message -----
From: Simon Coulter <shc@flybynight.com.au>
To: <RPG400-L@midrange.com>
Sent: Saturday, December 11, 1999 3:25 AM
Subject: Re: PRTF Overflow


>
> Hello Peter,
>
> It doesn't matter if the groups are fixed sizes or not.  The real problem
is that the program
> cannot assume the page length.  If I follow your example and someone
alters the page size of
> the printer file used by my program I will have groups of records spanning
pages because the
> rules changed.  Anytime you are printing blocks of records you should use
the feedback area
> because things can change outside your program -- and your program should
still cope -- belts
> and braces -- bug-free and all that!
>
> Regards,
> Simon Coulter.
>
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> file://--- forwarded
letter -------------------------------------------------------
> > X-Mailer: Microsoft Outlook Express 5.00.2314.1300
> > Date: Fri, 10 Dec 1999 18:53:03 -0800
> > From: "Peter Dow" <pcdow@yahoo.com>
> > To: RPG400-L@midrange.com
> > Reply-To: RPG400-L@midrange.com
> > Subject: PRTF Overflow
>
> >
> > It depends upon the application. If you are always printing a fixed
number
> > of lines in each block, then the overflow indicator method will work
fine as
> > long as you adjust the overflow line on the printer file.
> >
> > If it's a variable number of lines per printed block, then the file
feedback
> > method is required.
> >
> > Peter Dow
> > Dow Software Services, Inc.
> > 909 425-0194 voice
> > 909 425-0196 fax
> >
> > From: Simon Coulter <shc@flybynight.com.au>
> > > Simply relying on the overflow indicator fails when you require all
lines
> > in a group to be on
> > > the same page.  Your example makes assumptions about the page size.
If
> > the page size is
> > > changed to 15 your code will allow the last group of 10 to span two
pages
> > which is exactly what
> > > the other appends are trying to avoid.
> > >
> > > Using the file feedback area allows the program to determine the
actual
> > number of lines
> > > available on the page, and use the current line to determine whether
the
> > data to print will fit
> > > before the end of the page.  If so, print the block, if not, skip to a
new
> > page and print the
> > > block.
> >
>
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