PidTagNull Canonical Property
Represents a null value or setting of a property or reserves array space.
This property is used to reserve space in arrays of SPropValue structures. It is used in an array of SPropTagArray structures to tell the method to reserve space in the returned array of SPropValue structures. This allows for computed properties to be filled in an inexpensive way.
For more information, see MAPI Property Type Overview.
Specifies the properties and operations that are permissible on contacts and personal distribution lists.
Provides data type definitions.
Contains definitions of properties listed as associated properties.