[#AutoFile-IsNull]
= xref:AutoFile.adoc[AutoFile]::IsNull
:relfileprefix: ../
:mrdocs:

Return true if the wrapped FILE&ast; is nullptr, false otherwise&period;

== Synopsis

Declared in `&lt;streams&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
IsNull() const;
----

== Return Value

True if no file is wrapped, false otherwise&period;


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