Uses the system default locale settings, rather than custom locale settings.
VAR_TIMEVALUEONLY
Omits the date portion of a VT_DATE and returns only the time. Applies to conversions to or from dates. Not used for VariantChangeType and VariantChangeTypeEx.
VAR_DATEVALUEONLY
Omits the time portion of a VT_DATE and returns only the date. Applies to conversions to or from dates. Not used for VariantChangeType and VariantChangeTypeEx.