Source code of Windows XP (NT5)
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/*++
Copyright (c) 1990 Microsoft Corporation
Module Name:
com.hxx
Abstract:
Header specific to LPT
Author:
Ramon Juan San Andres (ramonsa) 26-Jun-1991
Revision History:
--*/
#include "string.hxx"
//
// Registry key with the names of the serial ports
//
#define LPT_KEY_NAME "HARDWARE\\DEVICEMAP\\PARALLEL PORTS"
//
// Data for request type REQUEST_TYPE_LPT_SETUP
//
typedef struct _REQUEST_DATA_LPT_SETUP {
//
// These flags tell what options to set
//
BOOLEAN SetCol; BOOLEAN SetLines; BOOLEAN SetRetry; //
// Options
//
ULONG Col; ULONG Lines; WCHAR Retry;
} REQUEST_DATA_LPT_SETUP, *PREQUEST_DATA_LPT_SETUP;
//
// Data for request type REQUEST_TYPE_LPT_REDIRECT
//
typedef struct _REQUEST_DATA_LPT_REDIRECT {
DEVICE_TTYPE DeviceType; ULONG DeviceNumber;
} REQUEST_DATA_LPT_REDIRECT, *PREQUEST_DATA_LPT_REDIRECT;
//
// Data for request type REQUEST_TYPE_CODEPAGE_SELECT
//
typedef struct _REQUEST_DATA_LPT_CODEPAGE_SELECT {
ULONG Codepage; // CodePage
} REQUEST_DATA_LPT_CODEPAGE_SELECT, *PREQUEST_DATA_LPT_CODEPAGE_SELECT;
//
// Data for requests to LPT
//
typedef union _LPT_REQUEST_DATA {
REQUEST_DATA_LPT_SETUP Setup; REQUEST_DATA_LPT_REDIRECT Redirect; REQUEST_DATA_LPT_CODEPAGE_SELECT CpSelect;
} LPT_REQUEST_DATA, *PLPT_REQUEST_DATA;
//
// Structure of a request to LPT
//
typedef struct _LPT_REQUEST {
REQUEST_HEADER Header; // Request Header
LPT_REQUEST_DATA Data; // Request data
} LPT_REQUEST, *PLPT_REQUEST;
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