Source code of Windows XP (NT5)
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//----------------------------------------------------------------------------
//
// Copyright (c) 1997-1999 Microsoft Corporation
// All rights reserved.
//
// File Name:
// timezone.h
//
// Description:
// This file contains definitions for loading the timezone info
// out of the registry and into internal data structs.
//
//----------------------------------------------------------------------------
#define TZ_IDX_GMT 0x55 // Idx of GMT
#define TZ_IDX_UNDEFINED -1 // Idx for nothing being set
#define TZ_IDX_SETSAMEASSERVER -2 // Idx for Set Same As Server
#define TZ_IDX_DONOTSPECIFY -3 // Idx for Do Not Specify this setting
#define TZNAME_SIZE 128 // buffer size
//
// Registry key names for getting timezone info out of the registry.
//
#define REGKEY_TIMEZONES \
_T("Software\\Microsoft\\Windows NT\\CurrentVersion\\Time Zones")
#define REGVAL_TZ_DISPLAY _T("Display")
#define REGVAL_TZ_INDEX _T("Index")
#define REGVAL_TZ_STDNAME _T("Std")
//
// This is where the timezone for the current machine lives. We use
// this for the regload feature and strcmp CUR_STDNAME with the StdName
// of each entry.
//
#define REGKEY_CUR_TIMEZONE \
_T("System\\CurrentControlSet\\Control\\TimeZoneInformation")
#define REGVAL_CUR_STDNAME _T("StandardName")
//
// For each valid timezone...
//
// DisplayName e.g. (GMT-08:00) Pacific Time
// StdName e.g. Pacific Standard Time
// Index Timezone=xx in the unattend.txt
//
// All of this info is in REGKEY_TIMEZONES
//
typedef struct {
TCHAR DisplayName[TZNAME_SIZE];
TCHAR StdName[TZNAME_SIZE];
int Index;
} TIME_ZONE_ENTRY;
//
// An array of time zone entries ...
//
typedef struct {
int NumEntries; // size of array
TIME_ZONE_ENTRY *TimeZones; // array of timezone entries
} TIME_ZONE_LIST;