Class CTzConverter

class CTzConverter : public CBase;

Description

Converts between time expressed in UTC and local time.

Derivation

• CBase - Base class for all classes to be instantiated on the heap

• CTzConverter - Converts between time expressed in UTC and local time

Members

Defined in CTzConverter:
ConvertToLocalTime(), ConvertToLocalTime(), ConvertToUniversalTime(), ConvertToUniversalTime(), CurrentTzId(), NewL(), ~CTzConverter()

Inherited from CBase:
Delete(), Extension_(), operator new()

See also:

• RTz

static IMPORT_C CTzConverter *NewL(RTz &aTzServer);

Description

CTzConverter factory method.

Provides client side caching for conversions in the local time zone. Caching is done through RTz but enabled through this interface. When caching has been enabled by this class and the RTz functions for local time zone conversion are used, they too will use the cache instead of the server. Multiple CTzConverter's can use the same RTz session. Each converter will be notified by the server if the time zone changes, and the cache will be updated appropriately.

To disable caching in RTz, the session must be closed. Caching will be re-enabled if a CTzConverter associated with the RTz is later used again for local time zone conversions.

This will leave with KErrNotReady if the RTz passed in is not connected.

Parameters

RTz &aTzServer Connection to the time zone server.

Return value

CTzConverter * A pointer to the new CTzConverter object. The caller takes ownership.

IMPORT_C ~CTzConverter();

Description

Destructor.

IMPORT_C TInt ConvertToLocalTime(TTime &aTime);

Description

Converts a time from UTC to local (wall-clock) time for the current system time zone.

Parameters

TTime &aTime On entry, contains the UTC time to be converted and the converted value on exit.

Return value

TInt KErrNone if successful, otherwise another system error code.

IMPORT_C TInt ConvertToLocalTime(TTime &aTime, const CTzId &aZone);

Description

Converts a time from UTC to the local (wall-clock) time for the specified time zone.

Parameters

TTime &aTime On entry, contains the UTC time to be converted, and the converted value on exit. const CTzId &aZone Time zone ID.

Return value

TInt KErrNone if successful, otherwise another system error code.

IMPORT_C TInt ConvertToUniversalTime(TTime &aTime);

Description

Converts a local (wall-clock) time for the current system time zone into UTC.

Parameters

TTime &aTime On entry, contains the local time to be converted, and the converted value on exit.

Return value

TInt KErrNone if successful, otherwise another system error code.

IMPORT_C TInt ConvertToUniversalTime(TTime &aTime, const CTzId &aZone);

Description

Converts a local (wall-clock) time for the specified time zone into UTC.

Parameters

TTime &aTime On entry, contains the local time to be converted, and the converted value on exit. const CTzId &aZone The time zone ID.

Return value

TInt KErrNone if successful, otherwise another system error code.

IMPORT_C TUint16 CurrentTzId();

Description

Get the numerical ID of the current time zone.

Return value

TUint16 The time zone ID.