Simulation support:

This function is mandatory for all drivers and must be implemented in order to have a valid OS/2 hardcopy driver.

Description:

GreEscape DEVESC_QUERYESCSUPPORT queries whether a particular escape code is implemented by the presentation driver. The presentation driver returns DEV_OK if the specified escape is supported.

Refer to Dynamic Job Properties for related information

#define INCL_GRE_DEVICE
#include <os2.h>

HDC      hdc;         /*  Device context handle. */
LONG     lEscape;     /*  DEVESC_QUERYESCSUPPORT escape code. */
LONG     cInCount;    /*  Number of bytes pointed to by pInData. */
PBYTE    pInData;     /*  Pointer to an escape code value specifying the escape function to be checked. */
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);