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GetDynamicTimeZoneInformation function

Retrieves the current time zone and dynamic daylight saving time settings. These settings control the translations between Coordinated Universal Time (UTC) and local time.

Syntax

C++


DWORD WINAPI GetDynamicTimeZoneInformation(
  _Out_  PDYNAMIC_TIME_ZONE_INFORMATION pTimeZoneInformation
);

Parameters

pTimeZoneInformation [out]: A pointer to a DYNAMIC_TIME_ZONE_INFORMATION structure.

Return value

If the function succeeds, it returns one of the following values.

Return code/value	Description
TIME_ZONE_ID_UNKNOWN 0	Daylight saving time is not used in the current time zone, because there are no transition dates.
TIME_ZONE_ID_STANDARD 1	The system is operating in the range covered by the StandardDate member of the DYNAMIC_TIME_ZONE_INFORMATION structure.
TIME_ZONE_ID_DAYLIGHT 2	The system is operating in the range covered by the DaylightDate member of the DYNAMIC_TIME_ZONE_INFORMATION structure.

If the function fails, it returns TIME_ZONE_ID_INVALID. To get extended error information, call GetLastError.

Remarks

The StandardName and DaylightName members of the resultant DYNAMIC_TIME_ZONE_INFORMATION structure are localized according to the current user default UI language.

Windows Phone 8: This API is supported.

Requirements

Minimum supported client	Windows Vista [desktop apps \| Windows Store apps]
Minimum supported server	Windows Server 2008 [desktop apps \| Windows Store apps]
Header	Winbase.h (include Windows.h)
Library	Kernel32.lib
DLL	Kernel32.dll

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