void XpCancelJob ( display, discard )
XpCancelJob cancels an in-progress job. If the job was started with output_mode XPGetData then the data stream to XpGetDocumentData is terminated. For many page description languages such arbitrary termination may invalidate the output.
If the job was started with output_mode XPSpool then depending on the driver and spooler configuration the entire job may be canceled or a partial job may be generated.
If discard is TRUE, all XPPrintNotify events with a detail field of XPEndPageNotify, XPEndDocNotify, or XPEndJobNotify are discarded before XpCancelJob returns.
For clients selecting XPPrintMask (see XpSelectInput), the event XPPrintNotify will be generated with its detail field set to XPEndJobNotify.
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