Add a watermark to a document in the print spooler C#

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Hi,

I am using Windows API functions to monitor a printjob and able to get the information like document name, job id, machine name etc. Now I paused the current print job by using the jobid successfully. The question is now I want to add a watermark to the document and resume the printer. I tried to get the Full path of the document but no data structure in Windows API printing gives it. Any help would be appreciated.

What I have tried:

Tried

PRINTER_NOTIFY_INFO_DATA

structre
PrintQueue class
PrintSystemJobInfo class

Posted 17-Jun-18 20:50pm

Dilan Shaminda

Updated 18-Jun-18 0:17am

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2 solutions

Solution 1

Google is your friend:

Google - c# add watermark to printed page[^]

Posted 17-Jun-18 23:55pm

#realJSOP

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Dilan Shaminda 18-Jun-18 5:59am

I googled a lot. There are a lot of examples. But my question is, how to add a watermark to a document which is already in the printer queue?

#realJSOP 18-Jun-18 7:26am

As far as I know, once it's in the queue, it cannot be modified. It can only be removed from the queue. If your printer does not have a watermark feature, you have to add the watermark to your document before sending it to the printer.

Dilan Shaminda 18-Jun-18 8:32am

Thank you

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Maciej Los · Accepted Answer · 2018-06-18T00:18:00

Solution 2

I believe you can't add a watermark to a printed document through the WinAPI, because a print queue is not the same as a list of filenames. It's a list of jobs to print with their names, but it doesn't mean you have an access to the list of documents, which are already printed....

Posted 18-Jun-18 0:18am

Maciej Los

Comments

Dilan Shaminda 18-Jun-18 6:50am

Thanks for the info :-) Is there any way that I can get the full path of the document?

Maciej Los 18-Jun-18 7:11am

Trully... i think it's impossible...

Dilan Shaminda 18-Jun-18 8:32am

Thank you

Maciej Los 18-Jun-18 8:33am

You're very welcome