DEVESC_SETMODE

GreEscape DEVESC_SETMODE sets the printer into a particular mode.

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.

Syntax

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

Parameters

hdc (HDC) - input

Device context handle.

lEscape (LONG) - input

DEVESC_SETMODE escape code.

cInCount (LONG) - input

Number of bytes pointed to by pInData.

pInData (PBYTE) - input

Pointer to the buffer that contains an ESCMODE structure.

pcOutCount (PLONG) - input

The handling routine ignores this parameter.

pOutData (PLONG) - input

The handling routine ignores this parameter.

pInstance (PVOID) - input

Pointer to instance data.

lFunction (ULONG) - input

High-order WORD=flags; low-order WORD=NGreEscape.

Returns

rc (LONG) - returns

Return Code.

The handling routine returns:

DEV_OK

Successful

DEVESC_NOTIMPLEMENTED

Escape not implemented for specified code

DEVESC_ERROR

Error

Remarks

Although it is optional for hardcopy drivers to support this function, those that do support it need to know the code page of any of the built-in fonts. For example, if only Code Page 437 is built-in, it is the code page used if 437 is requested by GreEscape DEVESC_SETMODE. If Code Page 865 is requested, a suitable code page or font could be downloaded.

This escape code is metafiled and recorded.

Source Code Sample

Declaration:

#define INCL_GRE_DEVICE
#include <os2.h>

HDC      hdc;         /* Device context handle. */
LONG     lEscape;     /* DEVESC_SETMODE escape code. */
LONG     cInCount;    /* Number of bytes pointed to by pInData. */
PBYTE    pInData;     /* Pointer to the buffer that contains an ESCMODE structure. */
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);