FIsARefNum (LabVIEW Manager Function)

Bool32 FIsARefNum(refNum);

Purpose

Determines whether refNum is a valid file refnum.

Parameters

Name Type Description
refNum LVRefNum File refnum you want to verify.

Return Value

Bool32, which can contain the following values.

Value Description
TRUE File refnum has been created and not yet disposed.
FALSE File refnum is not valid.