The COIXWABook class encapsulated Internet address book management.
The Internet address book is address book that we usually use 
with Outlook or Outlook Express programs as well as another
mailer programs. This address book represented in Windows 
by wab32.dll. The dll exposed it functionality with COM interfaces,
so there is nothing to worry about implementation of this dll.
Actually we can have access to 3 interfaces for sure:
IAddrBook, IWABObject, IABContainer (implements personal address book)
These interfaces are not described in details, but some information 
we can get is in MSDN in shell API reference. Consider reading
descriptions of MAPI implementation of the functions because
it provides more info and is more clearly.

The class allows browse for users, select users in predefined
edit boxes, create, delete and edit users and users' properties.

To use the class you first of all must call function Init() and 
make sure it is succeed. Otherwise you will not be able to work with the class.
The COXWABook class uses 2 helper classes. 
One of them is COXMailUser class that encapsulated user properties and operations
with these properties. Another one, COXPropValue has been created for
simplify use of SPropValue structure.

To use this class make sure you have added "Edkguid.lib"
in Project->Settings->Link->Object/Library modules