Debenu Quick PDF Library - PDF SDK Community Forum : GetImageID not working? http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 04 Apr 2026 20:10:31 +0000 Thu, 21 Feb 2013 20:57:47 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=2535 <![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[GetImageID not working? : Changing the content of a ready...]]> http://www.quickpdf.org/forum/getimageid-not-working_topic2535_post10505.html#10505 Author: Ingo
Subject: 2535
Posted: 21 Feb 13 at 8:57PM

Changing the content of a ready made pdf is hard stuff!
There will be ways but not with QuickPDF in a comfortable way ;-)
You should read the developer guid and the reference guide then you'll know more.
The library has many functions for a low cost price.
It's a good solution for many issues - for real pdf modifying not.

Cheers, Ingo
]]> Thu, 21 Feb 2013 20:57:47 +0000 http://www.quickpdf.org/forum/getimageid-not-working_topic2535_post10505.html#10505 <![CDATA[GetImageID not working? : So ReplaceImage(oldID, newID)...]]> http://www.quickpdf.org/forum/getimageid-not-working_topic2535_post10504.html#10504 Author: Bjarke
Subject: 2535
Posted: 21 Feb 13 at 3:08PM

So ReplaceImage(oldID, newID) only works with images that you have added to a pdf? Is there really no other way of replacing images already existing in a pdf?]]> Thu, 21 Feb 2013 15:08:57 +0000 http://www.quickpdf.org/forum/getimageid-not-working_topic2535_post10504.html#10504 <![CDATA[GetImageID not working? : Yes... Sorry... You&#039;re right.Resizing...]]> http://www.quickpdf.org/forum/getimageid-not-working_topic2535_post10503.html#10503 Author: Ingo
Subject: 2535
Posted: 20 Feb 13 at 9:36PM

Yes... Sorry... You're right.
Resizing images in an existing pdf won't work.
Getting the data of all images in a pdf is possible.
Anywhere (perhaps in the samples-section or an old newsletter) should be a sample.

Cheers, Ingo
]]> Wed, 20 Feb 2013 21:36:25 +0000 http://www.quickpdf.org/forum/getimageid-not-working_topic2535_post10503.html#10503 <![CDATA[GetImageID not working? : FindImages returns the number...]]> http://www.quickpdf.org/forum/getimageid-not-working_topic2535_post10502.html#10502 Author: Bjarke
Subject: 2535
Posted: 20 Feb 13 at 8:23AM

FindImages returns the number of images found - how can I access the images and get their ImageID?]]> Wed, 20 Feb 2013 08:23:04 +0000 http://www.quickpdf.org/forum/getimageid-not-working_topic2535_post10502.html#10502 <![CDATA[GetImageID not working? : Hi!FindImage you&#039;ll need:...]]> http://www.quickpdf.org/forum/getimageid-not-working_topic2535_post10501.html#10501 Author: Ingo
Subject: 2535
Posted: 19 Feb 13 at 8:37PM

Hi!

FindImage you'll need:
http://www.debenu.com/docs/pdf_library_reference/FindImages.php

Cheers and welcome here,
Ingo

]]> Tue, 19 Feb 2013 20:37:30 +0000 http://www.quickpdf.org/forum/getimageid-not-working_topic2535_post10501.html#10501 <![CDATA[GetImageID not working? : I&#039;m trying to resize all...]]> http://www.quickpdf.org/forum/getimageid-not-working_topic2535_post10498.html#10498 Author: Bjarke
Subject: 2535
Posted: 19 Feb 13 at 3:07PM

I'm trying to resize all images in a PDF (using the dll-version from c#) and tried to use GetImageID to get the Id of the image that is being replaced. After consulting the manual I found out that GetImageID only returns IDs of images that have been added to the document. But how do you get the ID of an image already existing in the document?



for (int pageIdx = 0; pageIdx < qp.PageCount(); pageIdx++){   qp.SelectPage(pageIdx);   var imageListID = qp.GetPageImageList(0);   for (int imageIdx = 1; imageIdx <= qp.GetImageListCount(imageListID); imageIdx++)   {      var image = new Bitmap(new MemoryStream(qp.GetImageListItemDataToString(imageListID, imageIdx, 0)));      image = ResizeBitmap(ref image);      int oldId = qp.GetImageID(imageIdx);      int newId = qp.AddImageFromString(ImageToByte(image), 0);      qp.ReplaceImage(oldId, newId);      qp.ClearImage(oldId);   }}
]]> Tue, 19 Feb 2013 15:07:49 +0000 http://www.quickpdf.org/forum/getimageid-not-working_topic2535_post10498.html#10498