@ZeroOID

Returns a NULL OID.
A zero OID is required in certain situations.
For example, for DocLinks or to transfer document copies to other databases.

Example: @ZeroOID

DBHANDLE1:=@OpenDB("TEST.NSF");
DBHANDLE2:=@OpenDB("TEST2.NSF");
VIEWHANDLE:=@OpenView(DBHANDLE1;"TEST VIEW");
VIEWPOSITION:=1:1:1:0:0:0:0:0:0:0;
NOTEHANDLE1:=@OpenNoteByPosition(DBHANDLE1;VIEWHANDLE;VIEWPOSITION;NOTEHANDLE1);
Ret:=@SetNoteDB(NOTEHANDLE1;DBHANDLE2);
@SetNoteID(NOTEHANDLE1;0);
@SetNoteOID(NOTEHANDLE1;@ZeroOID);
NOTEHANDLE1:=@CloseNote(NOTEHANDLE1;0);
VIEWHANDLE:=@CloseView(VIEWHANDLE);
DBHANDLE1:=@CloseDB(DBHANDLE1);
DBHANDLE2:=@CloseDB(DBHANDLE2);

Two databases, source and target, are opened. A document is searched for and opened, its DBHANDLE is set to DBHANDLE2, thereby copying the document into the target database. The document is then closed again, and finally both databases are closed again.
For such a copy operation to work, both the NOTEID and the OID must be set to 0.
@ZeroOID returns a zero OID for this purpose, for example.

Note : This text was machine-translated and may contain inaccuracies.