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.

• IUnknown_AtomicRelease
• IUnknown_DoContextMenuPopup (6.00)
• IUnknown_EnableModeless
• IUnknown_Exec
• IUnknown_GetClassID
• IUnknown_GetSite
• IUnknown_GetWindow
• IUnknown_HandleIRestrict
• IUnknown_HasFocusIO (6.00)
• IUnknown_OnFocusChangeIS (6.00)
• IUnknown_OnFocusOCS
• IUnknown_ProfferService (6.00)
• IUnknown_ProfferServiceOld (5.50)
• IUnknown_QueryService
• IUnknown_QueryServiceExec (6.00)
• IUnknown_QueryServiceForWebBrowserApp (6.00)
• IUnknown_QueryServicePropertyBag (6.00)
• IUnknown_QueryStatus
• IUnknown_Set
• IUnknown_SetOwner
• IUnknown_SetSite
• IUnknown_ShowBrowserBar (6.00)
• IUnknown_TranslateAcceleratorIO (6.00)
• IUnknown_TranslateAcceleratorOCS
• IUnknown_UIActivateIO (6.00)

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.