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use _get_timezone() under VC8 as _timezone is not available in all CRT versions (#4691)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@54417 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2008-06-29 01:21:37 +00:00
parent 8aba745d1d
commit 180e65df2d
1 changed files with 8 additions and 27 deletions
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35
src/common/datetime.cpp
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@@ -169,37 +169,18 @@ wxCUSTOM_TYPE_INFO(wxDateTime, wxToStringConverter<wxDateTime> , wxFromStringCon
#define WX_TIMEZONE wxGetTimeZone()
#elif defined(__DARWIN__)
#define WX_GMTOFF_IN_TM
#elif defined(__WXWINCE__) && defined(__VISUALC8__)
// _timezone is not present in dynamic run-time library
#if 0
// Solution (1): use the function equivalent of _timezone
#elif defined(__VISUALC8__)
// _timezone is not present in VC8 static run-time library but
// _get_timezone() is
static long wxGetTimeZone()
{
static long s_Timezone = MAXLONG; // invalid timezone
if (s_Timezone == MAXLONG)
{
int t;
_get_timezone(& t);
s_Timezone = (long) t;
}
return s_Timezone;
static int s_timezone = INT_MAX; // invalid timezone
if ( s_timezone == INT_MAX )
_get_timezone(&s_timezone);
return s_timezone;
}
#define WX_TIMEZONE wxGetTimeZone()
#elif 1
// Solution (2): using GetTimeZoneInformation
static long wxGetTimeZone()
{
static long timezone = MAXLONG; // invalid timezone
if (timezone == MAXLONG)
{
TIME_ZONE_INFORMATION tzi;
::GetTimeZoneInformation(&tzi);
timezone = tzi.Bias;
}
return timezone;
}
#define WX_TIMEZONE wxGetTimeZone()
#endif
#else // unknown platform - try timezone
#define WX_TIMEZONE timezone
#endif