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_CHAR_EXTRA changes the width of all characters, including the break character on a hardcopy device. The handling routine sets or resets, as defined by the value of cInCount, an extra width value. Upon completion, the width of a character is the default width specified by the font plus the extra width set by DEVESC_CHAR_EXTRA. The extra width can be positive, zero, or negative.

#define INCL_GRE_DEVICE
#include <os2.h>

HDC      hdc;         /*  Device context handle. */
LONG     lEscape;     /*  DEVESC_CHAR_EXTRA escape code. */
LONG     cInCount;    /*  Number of bytes pointed to by pInData. */
PBYTE    pInData;
PLONG    pcOutCount;  /*  The handling routine ignores this parameter. */
PLONG    pOutData;    /*  The handling routine ignores this parameter. */
PVOID    pInstance;   /*  Pointer to instance data. */
ULONG    lFunction;
LONG     rc;          /*  Return Code. */

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