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

Return true if the wrapped FILE* is nullptr, false otherwise.

== Synopsis

Declared in `<streams.h>`

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

== Return Value

True if no file is wrapped, false otherwise.


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