IUnknown Functions

Starting from version 5.00, SHLWAPI exports a growing collection of functions for calling some of an object’s methods without needing to have already a pointer to the right interface. Some of the functions are sophisticated enough to work with collections of objects through a service-provider object.

All these functions are exported by ordinal only. Only IUnknown_QueryService is documented in the January 2004 edition of the MSDN Library on CD. A handful were documented later in 2004.