IPrintOemDriverUni::DrvWriteAbortBuf method (prcomoem.h)

Artikel
04/01/2021

The IPrintOemDriverUni::DrvWriteAbortBuf method is provided by the Unidrv driver to allow an OEM rendering plug-in to send printer clean-up code after a user terminates a print job.

Syntax

HRESULT DrvWriteAbortBuf(
  PDEVOBJ pdevobj,
  PVOID   pBuffer,
  DWORD   cbSize,
  DWORD   dwWait
);

Parameters

pdevobj

Caller-supplied pointer to a DEVOBJ structure.

pBuffer

Caller-supplied pointer to a buffer containing a code fragment to be sent to the printer.

cbSize

Caller-supplied number of bytes in the buffer pointed to by pBuffer.

dwWait

Caller-supplied length of time the printer must wait, in milliseconds, before it can start a new print job after the current job is aborted.

Return value

The method must return one of the following values.

Return code	Description
S_OK	The operation succeeded.
E_FAIL	The operation failed.
E_NOTIMPL	The method is not implemented.

Remarks

OEMs use IPrintOemDriverUni::DrvWriteSpoolBuf to send output to the printer. If a print job is terminated by the user, IPrintOemDriverUni::DrvWriteSpoolBuf returns E_FAIL and can no longer be used to send any data to the printer. When this occurs, certain printers must have a clean-up code fragment sent to them, resetting their states before they can start new print jobs. For these printers, IPrintOemDriverUni::DrvWritetAbortBuf is used to send this code fragment to the printer.

IPrintOemDriverUni::DrvWriteAbortBuf can only be called after IPrintOemDriverUni::DrvWriteSpoolBuf has returned E_FAIL. IPrintOemDriverUni::DrvWriteAbortBuf should not be called more than once per job.

Rendering plug-ins are described in Customizing Microsoft's Printer Drivers.

Requirements

Requirement	Value
Target Platform	Desktop
Header	prcomoem.h (include Prcomoem.h)

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