ITimeZone::get_SupportsDST
A version of this page is also available for
4/8/2010
The SupportsDST property retrieves a value that indicates whether a Time Zone supports Daylight-Saving Time.
Syntax
HRESULT get_SupportsDST(
VARIANT_BOOL * pfSupportsDST
);
Parameters
- pfSupportsDST
[out] Reference to the Boolean flag. VARIANT_TRUE when the Time Zone supports Daylight-Saving Time. For information about the VARIANT_BOOL type, see the union member of the PROPVARIANT structure.
Return Value
This method returns the standard values E_INVALIDARG, E_OUTOFMEMORY, E_UNEXPECTED, and E_FAIL, as well as the following:
- S_OK
The method completed successfully.
Remarks
All other ITimeZone properties are defined only if the SupportsDST property is VARIANT_TRUE.
The VARIANT_BOOL data type (also known as VT_BOOL) uses the value -1 to represent TRUE and 0 to represent FALSE. It is defined in the wtypes.h header file in the following manner:
typedef short VARIANT_BOOL;
A common programming error occurs when, for readability purposes, you want to set a VARIANT_BOOL value to TRUE or FALSE. You can achieve the same effect by using the aliases VARIANT_TRUE and VARIANT_FALSE, which are also defined in the wtypes.h header file.
#define VARIANT_TRUE ((VARIANT_BOOL)0xffff)
#define VARIANT_FALSE ((VARIANT_BOOL)0)
Requirements
| Header | pimstore.h |
| Library | Pimstore.lib |
| Windows Embedded CE | Windows CE 2.0 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |
See Also
Reference
ITimeZone
Pocket Outlook Object Model Interfaces