The IncludeRecurrences property gets and sets a value that indicates whether to include Appointment recurrence instances in a collection of Appointment items (sorted on the IAppointment::get_Start property, in ascending order).
To set the value of the IncludeRecurrences property, call the property method described here.
To get the value of the IncludeRecurrences property, see the IPOutlookItemCollection::get_IncludeRecurrences property method.
If VARIANT_TRUE, recurring Appointments are expanded to all dates upon which they occur. If VARIANT_FALSE (the default), recurring Appointments are only associated with the first day upon which they occur.
Set this property to VARIANT_TRUE when you want to find all Appointments that fall on a specific date.
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)