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NAME

PWrite
internal write to printer port

SYNOPSIS

error = (*PrinterData->pd_PWrite)(buffer, length);
D0

LONG PWrite(UBYTE *, ULONG);

FUNCTION

PWrite writes 'length' bytes directly to the printer. This function is generally called by printer drivers to send their buffer(s) to the printer.

This function is accessed by referencing off the PrinterData (PD) structure. Below is a code fragment to show how to do get access to a pointer to the PrinterData (PD) structure.

#include exec/types.h
#include devices/printer.h
#include devices/prtbase.h

struct IODRPReq PReq;
struct PrinterData *PD;
struct PrinterExtendedData *PED;

/* open the printer device (any version); if it opened... */
if (OpenDevice("printer.device", 0, &PReq, 0) == NULL) {

/* get pointer to printer data structure */
PD = (struct PrinterData *)PReq.io_Device;

/* write something directly to the printer */
(*PD->pd_PWrite)("Hello world\n", 12);

CloseDevice(&PReq); /* close the printer device */
}