timezoneapi.h header

This header is used by System Services. For more information, see:

• System Services

timezoneapi.h contains the following programming interfaces:

Functions

EnumDynamicTimeZoneInformation Enumerates DYNAMIC_TIME_ZONE_INFORMATION entries stored in the registry.
FileTimeToSystemTime Converts a file time to system time format. System time is based on Coordinated Universal Time (UTC).
GetDynamicTimeZoneInformation Retrieves the current time zone and dynamic daylight saving time settings. These settings control the translations between Coordinated Universal Time (UTC) and local time.
GetDynamicTimeZoneInformationEffectiveYears Gets a range, expressed in years, for which a DYNAMIC_TIME_ZONE_INFORMATION has valid entries.
GetTimeZoneInformation Retrieves the current time zone settings. These settings control the translations between Coordinated Universal Time (UTC) and local time.
GetTimeZoneInformationForYear Retrieves the time zone settings for the specified year and time zone. These settings control the translations between Coordinated Universal Time (UTC) and local time.
SetDynamicTimeZoneInformation Sets the current time zone and dynamic daylight saving time settings. These settings control translations from Coordinated Universal Time (UTC) to local time.
SetTimeZoneInformation Sets the current time zone settings. These settings control translations from Coordinated Universal Time (UTC) to local time.
SystemTimeToFileTime Converts a system time to file time format. System time is based on Coordinated Universal Time (UTC).
SystemTimeToTzSpecificLocalTime Converts a time in Coordinated Universal Time (UTC) to a specified time zone's corresponding local time.
SystemTimeToTzSpecificLocalTimeEx Converts a time in Coordinated Universal Time (UTC) with dynamic daylight saving time settings to a specified time zone's corresponding local time.
TzSpecificLocalTimeToSystemTime Converts a local time to a time in Coordinated Universal Time (UTC).
TzSpecificLocalTimeToSystemTimeEx Converts a local time to a time with dynamic daylight saving time settings to Coordinated Universal Time (UTC).

Structures

DYNAMIC_TIME_ZONE_INFORMATION Specifies settings for a time zone and dynamic daylight saving time.
TIME_ZONE_INFORMATION Specifies settings for a time zone.