Simulation support:

This function is mandatory for hardcopy drivers, but may simply return a DEVESC_NOTIMPLEMENTED code. For other drivers, it is simulated by a handling routine in the graphics engine.

Description:

GreEscape DEVESC_FLUSHOUTPUT flushes any output received for the current document. The handling routine discards all data (such as data stored in a spooler buffer or journal file) received for the current document.

#define INCL_GRE_DEVICE
#include <os2.h>

HDC      hdc;         /*  Device context handle. */
LONG     lEscape;     /*  DEVESC_FLUSHOUTPUT escape code. */
LONG     cInCount;    /*  The handling routine ignores this parameter. */
PBYTE    pInData;     /*  The handling routine ignores this parameter. */
PLONG    pcOutCount;  /*  The handling routine ignores this parameter. */
PLONG    pOutData;    /*  The handling routine ignores this parameter. */
PVOID    pInstance;   /*  Pointer to instance data. */
ULONG    lFunction;   /*  High-order WORD=flags; low-order WORD=NGreEscape. */
LONG     rc;          /*  Return Code. */

rc = GreEscape(hdc, lEscape, cInCount, pInData,
       pcOutCount, pOutData, pInstance, lFunction);