Inside Macintosh: Programming With MRJToolkit / Chapter 2 - MRJToolkit Reference / Application-Defined Methods
The MRJPrintDocumentHandler Interface The com.apple.mrj.MRJPrintDocumentHandler interface contains one method, handlePrintFile, which is called when a user prints a document file from the Finder.
com.apple.mrj.MRJPrintDocumentHandler
handlePrintFile