(Disclaimer: First I must admit my knowledge of PDF is
limited and I have not worked with it for a year or
more, since I originally implemented it.)

True, this does force ADOBE to regenerate this
information.  Although, loading on the client takes a
lot less than the 10-12 seconds it takes on the server
- which the user also has to wait for. 

Now if there are potential rendering issues then that
could be a problem. Isn't ADOBE rebuilding the
appearances from the original fields added during the
creation of the form, similar to what iText is doing?
If not where does it get the appearances - both during
this 'rebuilding' of the appearances and whenever a
form is edited using Adobe?

What sort of problems are likely to come up? (We are
using only Text fields - and these forms are read-only
forms.)

We have been using this method with another package
for a year or more with no noticable problems. We have
been using Reader 3 and 4 and Acrobat 4, but mostly
version 4 of each. 

Thanks for your help!

Rich


--- Leonard Rosenthol <[EMAIL PROTECTED]> wrote:
> At 01:10 PM 4/4/2003 -0800, Rich McAneny wrote:
> >In working with another PDF package, I found that
> >there is a PDF value(?) called:
> >
> >/NeedAppearances true
> >
> >which I needed to add to the AcroForm Object. (This
> >caused the Appearances to be rebuilt by PDF.
> 
>          Using NeedAppearances is BAD - it's
> behavior is inconsistent with 
> different versions of Adobe Acrobat (and OS
> platforms) and is useless on in 
> other PDF Viewers.
> 
>          iText does form filling the CORRECT way by
> generating correct 
> appearances for the data as it fills it in.
> 
> 
> 
> >I tried this using iText and it worked as well.
> Below
> >is the code that I used/changed. It dropped the
> >creation time from 14-15 seconds down to 2-3.
> 
>          Because you left appearance generation for
> client side, so that 
> your user will have to wait longer for their forms
> to appear - IF they 
> appear at all!  I suggest you spend some time trying
> this with different 
> versions of Acrobat 3 vs. 4 vs. 5 vs. 5.1, and
> Reader vs. Approval vs. 
> Acrobat.  You will find some that the user
> experience will vary greatly AND 
> in some cases will be unacceptable (since the user
> will see the WRONG THING!).
> 
> 
> Leonard
>
---------------------------------------------------------------------------
> Leonard Rosenthol                           
> <mailto:[EMAIL PROTECTED]>
> Chief Technical Officer                     
> <http://www.pdfsages.com>
> PDF Sages, Inc.                             
> 215-629-3700 (voice)
> 


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