[This is preliminary documentation and subject to change.]
A client application can access all of an object's properties through the IAccessible interface. To retrieve an object property, you must first have the address of the object's IAccessible interface. Then, call the property's corresponding property access method (like IAccessible::get_accName) to retrieve the desired information.
All property access methods can access information for a container object and any simple elements it contains—it is the server's responsibility to maintain property information for simple elements.
For more information about object properties, see Properties for Accessible Objects.