Debenu Quick PDF Library - PDF SDK Community Forum : Can't signing a signature field http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Fri, 01 May 2026 05:16:45 +0000 Tue, 16 Feb 2021 22:27:10 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=3896 <![CDATA[Debenu Quick PDF Library - PDF SDK Community Forum]]> http://www.quickpdf.org/forum/forum_images/QPDF_Forum_Title.png http://www.quickpdf.org/forum/ <![CDATA[Can't signing a signature field : Regarding SetNeedApp... you can...]]> http://www.quickpdf.org/forum/cant-signing-a-signature-field_topic3896_post15622.html#15622 Author: Ingo
Subject: 3896
Posted: 16 Feb 21 at 10:27PM

Regarding SetNeedApp... you can read this in the documentation:
"...
Most PDF viewers will create the appearance stream for all form fields when the document is opened
..."
This isn't correct behavior if you want to sign a document.
It should be firmed and unchanged.
So try SetNeeApp... with 0 or -1 and it should work as expected.

Cheers and welcome here,
Ingo



Edited by Ingo - 16 Feb 21 at 10:28PM]]> Tue, 16 Feb 2021 22:27:10 +0000 http://www.quickpdf.org/forum/cant-signing-a-signature-field_topic3896_post15622.html#15622 <![CDATA[Can't signing a signature field : Thanks for your replay.I Am checking...]]> http://www.quickpdf.org/forum/cant-signing-a-signature-field_topic3896_post15618.html#15618 Author: Adia
Subject: 3896
Posted: 16 Feb 21 at 10:42AM

Thanks for your replay.

I Am checking the res value in debug.
SetNeedAppearances, SetSignProcessFieldall, SetSignProcessFieldImageFromFile,SetSignProcessSubFilter, SetSignProcessInfo,SetSignProcessPFXFromFile return 1.
EndSignProcessToFile return 0.
GetSignProcessResult return 13.

I moved the SetNeedAppearances precede to the NewSignProcessFromFile call
but I getting the same result - 13.





]]> Tue, 16 Feb 2021 10:42:52 +0000 http://www.quickpdf.org/forum/cant-signing-a-signature-field_topic3896_post15618.html#15618 <![CDATA[Can't signing a signature field : First, I suggest not discarding...]]> http://www.quickpdf.org/forum/cant-signing-a-signature-field_topic3896_post15617.html#15617 Author: tfrost
Subject: 3896
Posted: 16 Feb 21 at 10:27AM

First, I suggest not discarding all the res values; check each one.  And also I would recommend moving your SetNeedAppearances to precede the NewSignProcess call.]]> Tue, 16 Feb 2021 10:27:10 +0000 http://www.quickpdf.org/forum/cant-signing-a-signature-field_topic3896_post15617.html#15617 <![CDATA[Can't signing a signature field : HiI am trying to sign document...]]> http://www.quickpdf.org/forum/cant-signing-a-signature-field_topic3896_post15615.html#15615 Author: Adia
Subject: 3896
Posted: 16 Feb 21 at 9:20AM

Hi
I am trying to sign document using PFX file.
in the document I already have a signature filed name "Sig" -  code snip:

int signProcessID = debenu.NewSignProcessFromFile(fileName, "");
int res = debenu.SelectPage(1);          
res = debenu.SetSignProcessField(signProcessID, "Sig");          
res = debenu.SetSignProcessFieldImageFromFile(signProcessID,  Path.Combine(Directory.GetCurrentDirectory(), $"SigImage.jpg"), 0);
res = debenu.SetNeedAppearances(0);
res = debenu.SetSignProcessSubFilter(signProcessID, 3);         
res = debenu.SetSignProcessInfo(signProcessID, "To test digital signatures", "The World", "Contact me");
res = debenu.SetSignProcessPFXFromFile(signProcessID, GetPFXFileName(), "123456");
res = debenu.EndSignProcessToFile(signProcessID, Path.Combine(Directory.GetCurrentDirectory(), $"{Guid.NewGuid().ToString().Substring(0, 5)}.pdf"));
res = debenu.GetSignProcessResult(signProcessID);
res = debenu.ReleaseSignProcess(signProcessID);

I  getting code 13 from GetSignProcessResult 

Please Advice 




 
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