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Modifying output of print operation

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Modifying output of print operation

Subject: Modifying output of print operation
From: "Gerriet M. Denkmann" <email@hidden>
Date: Sun, 8 Oct 2006 13:32:07 +0200

When an NSPrintOperation gets a runOperation message it obviously asks its view for some data containing pdf code.

When NSPrintOperation has finished, and before it delivers its data to some file, a printer or Preview.app, I would like to intercept this data (hopefully as NSMutableData) and append a few bytes.

How can this be done?

I don't see any methods in NSPrintOperation giving me access to this data.

There is [NSView endDocument] which looks promising - but how to get at the data containing the pdf code?

Another problem: NSPrintOperation has a method "deliverResult". The documentation says: "Do not invoke this method directly" But it also says: "You should not subclass NSPrintOperation". So: what is this method good for, if it can be neither invoked nor overridden?


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