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.\" ========================================================================
.\"
.IX Title "DateTime::TimeZone::Local::Win32 3"
.TH DateTime::TimeZone::Local::Win32 3 "2007-12-31" "perl v5.8.8" "User Contributed Perl Documentation"
.SH "NAME"
DateTime::TimeZone::Local::Win32 \- Determine the local system's time zone on Windows
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&  my $tz = DateTime::TimeZone->new( name => 'local' );
.Ve
.PP
.Vb 1
\&  my $tz = DateTime::TimeZone::Local->TimeZone();
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module provides methods for determining the local time zone on a
Windows platform.
.SH "HOW THE TIME ZONE IS DETERMINED"
.IX Header "HOW THE TIME ZONE IS DETERMINED"
This class tries the following methods of determining the local time
zone:
.ie n .IP "* $ENV{\s-1TZ\s0}" 4
.el .IP "* \f(CW$ENV\fR{\s-1TZ\s0}" 4
.IX Item "$ENV{TZ}"
It checks \f(CW$ENV{TZ}\fR for a valid time zone name.
.IP "* Windows Registry" 4
.IX Item "Windows Registry"
We check for a registry key called
\&\*(L"HKEY_LOCAL_MACHINE\eSYSTEM\eCurrentControlSet\eControl\eTimeZoneInformation\eStandardName\*(R".
.Sp
If this exists, it contains a Windows name for the time zone. We use a
lookup table to translate this into an equivalent time zone name.
.Sp
This lookup table was borrowed from the Chronos Smalltalk
library.
.SH "AUTHOR"
.IX Header "AUTHOR"
Dave Rolsky, <autarch@urth.org>
.SH "COPYRIGHT & LICENSE"
.IX Header "COPYRIGHT & LICENSE"
Copyright (c) 2003\-2007 David Rolsky.  All rights reserved.  This
program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
.PP
The full text of the license can be found in the \s-1LICENSE\s0 file included
with this module.