I cant get the time zone information with :
TZInfo.TIME_ZONE_INFORMATION
GetTimeZoneInformation_(TZInfo)
How can I get information about summer time or winter time (+/- 0100 GMT) ?
Summer/Winter time ?
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gnozal
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The GetTimeZoneInformation function retrieves the current time-zone parameters. These parameters control the translations between Coordinated Universal Time (UTC) and local time.
DWORD GetTimeZoneInformation(
LPTIME_ZONE_INFORMATION lpTimeZoneInformation // address of time-zone settings
);
Parameters
lpTimeZoneInformation
Points to a TIME_ZONE_INFORMATION structure to receive the current time-zone parameters.
Return Values
If the function succeeds, the return value is one of the following values:
Value Meaning
TIME_ZONE_ID_UNKNOWN The operating system cannot determine the current time zone. This is usually because a previous call to the SetTimeZoneInformation function supplied only the bias (and no transition dates).
TIME_ZONE_ID_STANDARD The operating system is operating in the range covered by the StandardDate member of the structure pointed to by the lpTimeZoneInformation parameter.
TIME_ZONE_ID_DAYLIGHT The operating system is operating in the range covered by the DaylightDate member of the structure pointed to by the lpTimeZoneInformation parameter.