MAPIUID
The MAPIUID
structure is used to uniquely identify a service provider.
Quick Info
|
Header
file: |
MAPIDEFS.H |
|
Related
macro: |
IsEqualMAPIUID |
typedef struct _MAPIUID
{
BYTE
ab[16];
} MAPIUID, FAR *LPMAPIUID;
Members
ab
An array
containing a 16-byte identifier.
Remarks
A MAPI unique
identifier, or MAPIUID, is a GUID structure put into Intel processor byte
order. That is, MAPIUID and GUID structures have the same byte
order when used on an Intel-processor computer. However, on a computer that
uses a different byte order for
example, a Motorola -processor computer the MAPIUID has the same byte order as on the
Intel machine and the GUID uses the byte order specific to the computer.
MAPI creates MAPIUID
structures in a way that makes it extremely rare for two different items to
have the same identifier. MAPIUID structures can be stored as binary
properties or as files, without regard to the byte ordering of the computer
storing or accessing the information.
MAPIUID structures are used:
To identify a profile section.
In the entry identifiers of
message store and address book objects to identify the responsible service
provider.
In the PR_SEARCH_KEY property
of messages.
To generate a
MAPIUID identifier for a profile section or an entry identifier, service
providers call the Microsoft utility UUIDGEN.EXE. To generate a MAPIUID
identifier for a search key, service providers call IMAPISupport::NewUID.
When a client
transmits a message across a network, it should use a protocol or transmission
format that does not change the byte order of MAPIUID data.
See Also