iSEDQuickPDF does not clean Document Properties

Here is my problem, I wrote a proram that clean the metadata in pdf document such as:
"author", "title", "subject", "keywords", "creator", "producer", "creation date", "last save time"
it`s works fine but when I setup Adobe Acrobat 6.0 Professional and create my own pdf on it, and clean by my program it`s does not clean. Why it can be and what I need to do in this case? This is error of iSEDQuickPDF or some issue of Adobe Acrobat?

I try on 2 PC,the problem appears on both machines.
OS:Windows 2 SP:2
iSEDQuickPDF version: 5.20
IDE:vb6

I will try new version of dll tomorow, yes I check the result of execute function it true and after this I read value that clean once more and it is clean but when I open cleaned file in Adobe Acrobat the Document properties stay here!

If I delete Adobe Acrobat Proffesionl from PC, it`s work fine.

Hi Ingo
Foxit Reader shows that all property cleaned.

How I can send you email? I try to use the own mail system on this site but here not suport attachments,can you give me the @mail adres?

Sorry I did not seen it before,I about email)

Your advice about new pdf not suitable, you see, I have a program that must clean all PDF property in different
documents.
So iSEDQuickPDF can not do anything with this problem? As I now most of people use like viewer of pdf document Adobe Acrobat.

Will you working on this issue and create new version of dll that will clean the document property in both reader of pdf?

Hi Ingo

I send you document to email.I understand that Acrobat take the Document from another place that QuickPDF does not check, thats why I asking, can you check it, and do something with this.
Thanks.

Hi Alex!

First thing you has to do in this case is like you did it:
Decrypt the pdf after loading.
Clean the property-fields with QuickPDF.
Save the file with a new name unencrypt.
Load the new file content into a stream or so:

filecontent := '';
fs := TFileStream.Create(pdffile,fmOpenRead+fmShareDenyWrite);
try
  SetLength(filecontent,fs.Size);
  fs.Read(PChar(filecontent)^,fs.Size);
finally
  fs.Free;
end;

Now you can search in the string for (in your example):

pdf:Producer='Acrobat Web Capture 6.0'
pdf:Keywords='TestKewyWords'
xml:lang='x-default'>TestSubject</rdf:li>
xml:lang='x-default'>file:///D|/test.txt</rdf:li>

You change all things like this:

pdf:Producer=''
pdf:Keywords=''
xml:lang='x-default'></rdf:li>
xml:lang='x-default'></rdf:li>

At least you should write the string back to harddisk with a new name.
Delete the original file.
Rename the new file with the original name.

One bad point: QuickPDF can't load the pdf-document in a proper way now!
The Foxit Reader and the Acrobat Reader doesn't have any problems with the new file.
You can test this all using Notepad - It works! I've sent you an email with original and new file...