Bill,
Best and most reliable way of getting the Y figure is by simulate a printout
without actually writing the PRTF lines and just counting the page number.
After the simulate printing restart with actual printing using the counted
page number as Y.
This technique depends on how you obtain the page number, either counting by
the program
or using the infds for the PRTF. The last of course require actual printing
and in this case
you would have to delete the created spoolfile before recreating with Y.
Brgds
Helge
-----Oprindelig meddelelse-----
Fra: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] På vegne af Bill Howie
Sendt: 21. oktober 2014 17:20
Til: RPG programming on the IBM i (AS/400 and iSeries)
Emne: How to reliably determine total pages
Hello all,
I'm working on a program that generates a report which includes a "Page X of
Y" description in the corner. I'm struggling trying to get the total number
of pages to reliably be calculated. I'll try to explain how it works now.
The program does the "two-loop" approach where it reads through all the
items it will eventually print to try to calculate a total number
of items. I believe this part of it to be working correctly (but I could
be wrong).
At the end of this first loop it attempts to calculate the total number of
pages. I'll preface this by saying that this report basically has what
I'll call a "header" page and a "continuation" page. The "header" page
prints mostly heading information and one or two detail items. Then the
"continuation" page just prints detail items. Here's how the calculation
currently works:
if total number of lines > max allowable lines on "header" page then total
lines = total lines - (total lines - max allowable on "header")
- 1
total pages work field = (total lines/max allowable lines on continuation
page)
if the decimal portion of the total pages work field > 0 total pages = whole
portion of the total pages work field + 2 else total pages = total pages
work field + 1 endif endif
This works sometimes, and sometimes it doesn't. It doesn't appear to be
as simple as just dividing the total number of lines by the maximum per
page, because we have two different maximums (because of the whole "header"
and "continuation" thing).
Hopefully this isn't COMPLETELY confusing. Anyone out there know of a
really reliable formula for computing this when two different max lines
amounts are involved? As always any help is appreciated. Thanks!
Bill
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