CheckNetAccessFile
function CheckNetAccessFile (const NetAccess : TNetAccess) : Boolean;
TNetAccess = packed record
Fh : Integer;
Key : TKey;
CheckValue : Word;
Index : Word;
end;
CheckNetAccessFile verifies that the net access file referenced by NetAccess has at least one slot that is not in use.
If there is at least one open slot in the net access file, CheckNetAccessFile returns true, otherwise false.
This routine is defined in the OgNetWrk unit.