create transparent pdf document

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   Hi all,
is it possible to make pdf document transparent in order to import/overlay it to another pdf document using QuickPdf?

I'm trying to print the pdf document using the 'PrintDocument' method. But I can't find an option to switch the document to transparent. I would like to have the white space transparent.

The problem I'm having is that the printed document covers the other pdf documents content when I use the 'MergeDocument' and 'DrawCapturedPage'.

Hope you guys have some advice!

Thanks,
Martin

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MartinCS Members Profile Find Members Posts Beginner Joined: 27 Nov 12 Status: Offline Points: 3	Post Options Post Reply Quote MartinCS Report Post Thanks(0) Quote Reply Topic: create transparent pdf document Posted: 23 Jan 13 at 1:14PM
	Hi all, is it possible to make pdf document transparent in order to import/overlay it to another pdf document using QuickPdf? I'm trying to print the pdf document using the 'PrintDocument' method. But I can't find an option to switch the document to transparent. I would like to have the white space transparent. The problem I'm having is that the printed document covers the other pdf documents content when I use the 'MergeDocument' and 'DrawCapturedPage'. Hope you guys have some advice! Thanks, Martin

edvoigt Members Profile Find Members Posts Senior Member Joined: 26 Mar 11 Location: Berlin, Germany Status: Offline Points: 111	Post Options Post Reply Quote edvoigt Report Post Thanks(0) Quote Reply Posted: 07 Feb 13 at 6:13PM
	Hi Martin, you cannot change the colors in an existing PDF. Sometimes a white area is used to make underlying parts invisible. It would not work, if anybody could change this white color anyway to nocolor. But it would be a work deep inside then PDF-structure to realize a such behavior. You have to find the "white objects" and give them a new life with no content. Nothing for a short time... If you are the producer of this PDF, thats another play. Cheers, Werner

alinux08 Members Profile Find Members Posts Team Player Joined: 20 Jun 12 Status: Offline Points: 20	Post Options Post Reply Quote alinux08 Report Post Thanks(0) Quote Reply Posted: 08 Feb 13 at 1:02AM
	It all depends on what kind of pdf you have. If it is a simple pdf file with text, you can extract all the text with locations, then recreate in your program with a transparent background. If it has images, other objects, then you have more work to do by extract them, recreate them like the text. Or you can work on rendered document's pixels, change them one by one. None of the above is a easy job to do.