Simulation support:

None.

Description

GreEscape DEVESC_HWREQUEST is called by EnDIVE users to take advantage of enhanced aquire functions. In addition to performing the same serialization functions, GreEscape DEVESC_HWREQUEST lets each using process find out if its video memory buffer has been relocated or if system memory could not be allocated.

#define INCL_GRE_DEVICE
#include <os2.h>

HDC      hdc;         /*  Device context handle. */
LONG     ICODE;       /*  DEVESC_HWREQUEST escape code. */
LONG     lInCount;    /*  Number of bytes pointed to by pbInData. */
PBYTE    pbInData;    /*  Pointer to VRAMREQUESTIN data structure. */
PLONG    plOutCount;  /*  Number of bytes pointed to by pbOutData. */
PLONG    pbOutData;   /*  Pointer to VRAMREQUESTOUT data structure. */
LONG     rc;          /*  Return Codes. */

rc = GreEscape(hdc, ICODE, lInCount, pbInData,
       plOutCount, pbOutData);