Flags used to distinguish the format of the strings in the SMAPIFormProp structure. The following flag can be set:
The strings returned are in Unicode format. If MAPI_UNICODE is not set, the strings are in ANSI format.
Type of the named property, with the most significant word set to zero.
Name for the named property, which includes a GUID structure identifying the property set and either a numeric or string value that represents an interface identifier and form name.
Pointer to the display name of the named property.
Value describing the type of data included in the u member. Possible values are as follows:
The u member does not contain an enumeration.
The u member contains a structure that describes an enumeration.
Union describing the association between the name and number of the named property. By using some properties, the u member is empty. With other properties, it is represented in a structure consisting of the following members:
The MAPINAMEID structure that contains the property set and identifier for the named property.
The SMAPIFormProp structure contains information about a form property used as part of the definitions of the IMAPIFormInfo interface; nSpecialType contains a tag that applies to the u union that is part of SMAPIFormProp.