Security settings for PDF forms

Hi galcott!

Below you'll find the code i'm using to set formfield-values.
It'll work for you, too.

You should try your code with a "ep" instead of "e" in the Encrypt ;-)

Cheers, Ingo

    QP := TQuickPDF713.Create;
    try
       QP.UnlockKey('MyKey');
       QP.LoadFromFile(FileName);
       If ( QP.Encrypted > 0 ) then
            QP.Unencrypt;

       ffc := QP.FormFieldCount;
//     there are different ways to set formfields.
//     With the appearance-functionality we can set
//     a field value (and it is visible) but we can
//     still overwrite it because it is still a formfield.
//     With the flatten-functionality AFTER setting a field-
//     content the fields will be converted to normal text.
       if ffc > 0 then // Are there any formfields?
          begin

//           first version with setting via fieldindex 
             QP.SetNeedAppearances(1);
             QP.SetFormFieldValue( 1, 'my first value' );
             QP.UpdateAppearanceStream( StrToInt(Trim(FieldName)) );
//           if we use the next line it will be text and no longer fieldcontent
//           QP.FlattenFormField( 1 );

{
//           second version with setting via fieldname.
//           You can get the names via GetFormFieldTitle. 
             QP.SetNeedAppearances(1);
             QP.SetFormFieldValueByTitle( 'field1', 'my first value' );
             nresult := QP.FindFormFieldByTitle('field1');
             QP.UpdateAppearanceStream(nresult);
//           if we use the next line it will be text and no longer fieldcontent
//           QP.FlattenFormField( nresult );
}
          end;
    finally
       QP.SaveToFile(FileName);
       QP.Free;
    end;



Edited by Ingo - 08 May 09 at 1:36AM

Is the pdf already encrypted before?
Then first unencrypt it.
Do you see the values you inserted in the fields?

Cheers, Ingo

Hi!

Then you didn't do it like i've described before?
Is it always this way or only one special file?

Cheers, Ingo



Edited by Ingo - 12 May 09 at 1:35AM

So i think these files are all from the same producer.
Are they working with non-standard-security handlers?
That can be the reason (like gnostice told you already).
A missing special security handler you can only get from the producer of the document.
@All: In cases like this it's always better if you send sample-files. Cases having to do with access-rights and / or security handlers can be determined immediately.

Cheers, Ingo

Hi Glenn,

The PDFs in your attachment have had extended usage rights added to them by Adobe LiveCycle Designer (or a similar Adobe related product). So when you use Quick PDF Library to modify the file (or any other non-Adobe product), it is corrupting the extended features in some way and then as a result Adobe Reader is showing you the error message about extended features no longer being available.

If you want to use Quick PDF Library with these PDFs then you will need to open the PDFs in Adobe Acrobat and choose File > Save a Copy... this will remove the extended features from the PDF and allow you to then modify the PDF without any further problems.

I have written a knowledge base article about Adobe Reader Extensions / Usage Rights that you might find useful.

Cheers,
- Rowan.