MouSetScaleFact

typedef struct _SCALEFACT {   /* mousc */
  USHORT rowScale;            /* row scaling factor */
  USHORT colScale;            /* column coordinate scaling factor */
} SCALEFACT;

#define INCL_MOU

USHORT  rc = MouSetScaleFact(ScaleStruct, DeviceHandle);

PSCALEFACT       ScaleStruct;   /* 2-word structure */
HMOU             DeviceHandle;  /* Mouse device handle */

USHORT           rc;            /* return code */