Re: [iText-questions] multiple form fields with the same name

[Carsten Frewert]

Hi Leonard!

On Thu, 16 May 2002, Leonard Rosenthol wrote:

> At 12:38 PM +0200 5/16/02, Carsten Frewert wrote:
> >I just discovered a way to crash Acrobat Reader 5 / Win32:
> 
>   Acrobat shouldn't crash, but...

ACK. Not rendering the document and providing an error message would
be ok, but crashing is really bad. 

> >If you put two or more form fields (I used textfields) with the same
> >name into a PDF document,
> 
>   Yes, you can NOT do that!   The way forms are implemented in 
> PDF sets it up so that can't have two forms with the same name...

Thanks for the info. This should be pointed out in the PDF spec, but
that's not an iText problem.

Bye,
Carsten

___

Have big pipes? SourceForge.net is looking for download mirrors. We supply
the hardware. You get the recognition. Email Us: [EMAIL PROTECTED]
___
iText-questions mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/itext-questions

Re: [iText-questions] multiple form fields with the same name

[Leonard Rosenthol]

At 7:25 PM +0200 5/16/02, David Teran wrote:
>>  The only way to change this would be to completely revamp how 
>>forms are structured internally in a PDF file.  They could do this, 
>>but it would break compatibility with all older viewers :(.
>>
>Bad news, i wonder why they  did it how its implemented now,

Because it was easy to fit into the existing PDF model (it's 
basically a dictionary of key/value pairs) and the engineer didn't 
study the real world.


LDR
-- 
---
Leonard Rosenthol
Chief Technical Officer  
PDF Sages, Inc.  215-629-3700 (voice)


___

Have big pipes? SourceForge.net is looking for download mirrors. We supply
the hardware. You get the recognition. Email Us: [EMAIL PROTECTED]
___
iText-questions mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/itext-questions

Re: [iText-questions] multiple form fields with the same name

[David Teran]

>   The only way to change this would be to completely revamp how forms are 
>structured internally in a PDF file.  They could do this, but it would break 
>compatibility with all older viewers :(.
>
Bad news, i wonder why they  did it how its implemented now, it definitly is 
problematic when one is used to HTML. For example, PDFGenerator dynamically  converts 
XML to PDF. Now as we switched to iText, it can also convert HTML forms to PDF forms 
on the fly (http://217.115.139.170/cgi-bin/WebObjects/PDFGeneratorExample0), but we 
had a lot of trouble with this limitation and it also means to have a workaround at 
the server side, too.

regards, david


>
> Leonard
> -- 
> ---
> Leonard Rosenthol
> Chief Technical Officer  
> PDF Sages, Inc.  215-629-3700 (voice)
>
>
> ___
>
> Have big pipes? SourceForge.net is looking for download mirrors. We supply
> the hardware. You get the recognition. Email Us: [EMAIL PROTECTED]
> ___
> iText-questions mailing list
> [EMAIL PROTECTED]
> https://lists.sourceforge.net/lists/listinfo/itext-questions
>


___

Have big pipes? SourceForge.net is looking for download mirrors. We supply
the hardware. You get the recognition. Email Us: [EMAIL PROTECTED]
___
iText-questions mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/itext-questions

Re: [iText-questions] multiple form fields with the same name

[Leonard Rosenthol]

At 12:38 PM +0200 5/16/02, Carsten Frewert wrote:
>I just discovered a way to crash Acrobat Reader 5 / Win32:

Acrobat shouldn't crash, but...


>If you put two or more form fields (I used textfields) with the same
>name into a PDF document,

Yes, you can NOT do that!   The way forms are implemented in 
PDF sets it up so that can't have two forms with the same name...


Leonard
-- 
---
Leonard Rosenthol
Chief Technical Officer  
PDF Sages, Inc.  215-629-3700 (voice)


___

Have big pipes? SourceForge.net is looking for download mirrors. We supply
the hardware. You get the recognition. Email Us: [EMAIL PROTECTED]
___
iText-questions mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/itext-questions

Re: [iText-questions] multiple form fields with the same name

[Leonard Rosenthol]

At 3:09 PM +0200 5/16/02, David Teran wrote:
>Adobe should change this as soon as possible, because in HTML its 
>normal to have multiple Checkboxes with the same name.
>

The only way to change this would be to completely revamp how 
forms are structured internally in a PDF file.  They could do this, 
but it would break compatibility with all older viewers :(.


Leonard
-- 
---
Leonard Rosenthol
Chief Technical Officer  
PDF Sages, Inc.  215-629-3700 (voice)


___

Have big pipes? SourceForge.net is looking for download mirrors. We supply
the hardware. You get the recognition. Email Us: [EMAIL PROTECTED]
___
iText-questions mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/itext-questions

Re: [iText-questions] multiple form fields with the same name

[David Teran]

This will not apply to radio button lists. Adobe should change this as soon as 
possible, because in HTML its normal to have multiple Checkboxes with the same name.

regards, david


On Thursday, May 16, 2002, at 12:38 PM, Carsten Frewert wrote:

> Hi!
>
> I just discovered a way to crash Acrobat Reader 5 / Win32:
>
> If you put two or more form fields (I used textfields) with the same
> name into a PDF document,
>
> - Acrobat Reader 4.0 displays all fields, and input in one field shows
>   up in all other fields, too.
>   This seems reasonable, as all fields use the same "variable text".
>
> - Acrobat Reader 5 crashes (sooner or later) if you enter a field with
>   the mouse pointer.
>
> So take care to use a different name for every form field... ;)
>
> Bye,
>
>   Carsten
>
> ___
>
> Have big pipes? SourceForge.net is looking for download mirrors. We supply
> the hardware. You get the recognition. Email Us: [EMAIL PROTECTED]
> ___
> iText-questions mailing list
> [EMAIL PROTECTED]
> https://lists.sourceforge.net/lists/listinfo/itext-questions
>


___

Have big pipes? SourceForge.net is looking for download mirrors. We supply
the hardware. You get the recognition. Email Us: [EMAIL PROTECTED]
___
iText-questions mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/itext-questions