BUG: IROT::Register() and IOL::SetDisplayName() Inconsistency

IRunningObjectTable::Register() allows monikers that are not valid filenames to be registered as file monikers. However, if the display name string passed to IOleLink::SetSourceDisplayName() is not a valid filename, SetSourceDisplayName() returns STG_E_FILENOTFOUND.

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.

This inconsistency may become apparent when an OLE application is calling IOleLink::SetSourceDisplayName() to change the source of a link object. It is possible that a new file moniker that is not a valid source name will be registered on the running object table--for example, a moniker of "New 1" for a new, as yet unsaved document. It will not be possible to use SetSourceDisplayName() to link to this object, however, because "New 1" is not a valid filename, and therefore it will be rejected by SetSourceDisplayName().