Parameter hArcData (Archive HANDLE)

In many plugin functions parameter hArcData (type: HANDLE) is used.

The parameter is returned by ArcOpenW (or deprecated OpenArchiveW or OpenArchive).

hArcData – a unique identifier for the archive. Presumably this is a pointer on a data structure, describing the open archive.

To end archive processing the program calls CloseArchive, to let plugin execute closing (free memory, etc.).