Debenu Quick PDF Library - PDF SDK Community Forum : Load File/Open File Differences http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 04 Apr 2026 19:29:01 +0000 Wed, 08 May 2013 14:04:59 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=2631 <![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[Load File/Open File Differences : Chris,As Ingo says, when you load...]]> http://www.quickpdf.org/forum/load-file-open-file-differences_topic2631_post10830.html#10830 Author: AndrewC
Subject: 2631
Posted: 08 May 13 at 2:04PM

Chris,

As Ingo says,  when you load a file using DAOpenFile then you can only use functions starting with DA to work with this file.   The standard functions will not work with a file that has been opened with DAOpen file.  

Basically, you cannot mix DA and standard calls and expect them to work.  Both sets of functions use completely different methods to work with a PDF file.

GetAnalysisInfo is a 3rd way of working with a PDF file as it uses a filename - the function automatically opens the file, gets the required information and closes the file for you.

There is of DALoadFromFile - only DAOpenFile.  Most people use QP.LoadFromFile.  You really only need the DA functions for quite large PDF files.

Andrew.
]]> Wed, 08 May 2013 14:04:59 +0000 http://www.quickpdf.org/forum/load-file-open-file-differences_topic2631_post10830.html#10830 <![CDATA[Load File/Open File Differences : Hi Ingo, Here is the link to...]]> http://www.quickpdf.org/forum/load-file-open-file-differences_topic2631_post10815.html#10815 Author: chrisreed
Subject: 2631
Posted: 03 May 13 at 11:09AM

Hi Ingo,
Here is the link to my code in LabVIEW.....  http://postimg.org/gallery/6uafpxai/
 
I get what you're saying, but even when I did use the DAGetInformation function with the other DA Functions I still didn't get exactly the same results, but that's OK GetAnalysisInfo function matches.
 
P.S. Is there such a function as DALoadFromFile, because I couldn't find it? 
 
Chris
]]> Fri, 03 May 2013 11:09:13 +0000 http://www.quickpdf.org/forum/load-file-open-file-differences_topic2631_post10815.html#10815 <![CDATA[Load File/Open File Differences : Hi Chris!For free upload-space...]]> http://www.quickpdf.org/forum/load-file-open-file-differences_topic2631_post10812.html#10812 Author: Ingo
Subject: 2631
Posted: 02 May 13 at 12:24PM

Hi Chris!
 
For free upload-space you can search on Google.
There are many file hoster offering their services.
The other thing:
You can't use LoadFromFile and DAOpenFile together.
It doesn't matter if one way round it works and the other
way round not - Don't mix it.
Still from your first post:
If you're using DALoadFromFile it's absolutely necessary
to use the DA-functions to get the metadata like "author",
"subject", and so on. Again: Don't mix DA- and non-DA
in one code part between create and free.
 
Cheers, Ingo
 


Edited by Ingo - 02 May 13 at 12:26PM]]> Thu, 02 May 2013 12:24:05 +0000 http://www.quickpdf.org/forum/load-file-open-file-differences_topic2631_post10812.html#10812 <![CDATA[Load File/Open File Differences : No it happens on ANY PDFFile Iload...]]> http://www.quickpdf.org/forum/load-file-open-file-differences_topic2631_post10810.html#10810 Author: chrisreed
Subject: 2631
Posted: 02 May 13 at 8:10AM

No it happens on ANY PDF File I load or open.
 
What is strange is that if I use the LoadFile function first followed by the DAOpenFile function the two GetInformation function both get the correct information, but not the other way around.
 
I would show you my code, but it is in LabVIEW and hence is a picture and I can't upload a picture to this post.  Is there a public space on the web where I can upload my pictures to and provide a link to that?
 
Chris
]]> Thu, 02 May 2013 08:10:16 +0000 http://www.quickpdf.org/forum/load-file-open-file-differences_topic2631_post10810.html#10810 <![CDATA[Load File/Open File Differences : Hi Chris!Perhaps the problem...]]> http://www.quickpdf.org/forum/load-file-open-file-differences_topic2631_post10809.html#10809 Author: Ingo
Subject: 2631
Posted: 02 May 13 at 7:25AM

Hi Chris!
 
Perhaps the problem will be clearer if you can offer the document anywhere for test download.
Or is it a common prob with any document?
 
Cheers, Ingo
]]> Thu, 02 May 2013 07:25:41 +0000 http://www.quickpdf.org/forum/load-file-open-file-differences_topic2631_post10809.html#10809 <![CDATA[Load File/Open File Differences : I understand the difference between...]]> http://www.quickpdf.org/forum/load-file-open-file-differences_topic2631_post10808.html#10808 Author: chrisreed
Subject: 2631
Posted: 02 May 13 at 4:33AM

I understand the difference between the LoadFromFile and DAOpenFile functions, but what I don't understand is that once the PDF file has been loaded/opened why do other functions used afterwards produce different results:
 
eg. HasFontResources
LoadFromFile = 1
DAOpenFile = 0
 
eg. GetInformation
LoadFromFile -> Author = Administrator, Title = Old Report
DAOpenFile ->    Author = "",                   Title = ""
Plus Creator, Producer, Creation Date and Modification Date are all different.
 
Isn't the format/contents of the PDF exactly the same regardless of how you Load/Open the PDF File?
 
Chris
]]> Thu, 02 May 2013 04:33:29 +0000 http://www.quickpdf.org/forum/load-file-open-file-differences_topic2631_post10808.html#10808