[#FlatFilePos-IsNull] = xref:FlatFilePos.adoc[FlatFilePos]::IsNull :relfileprefix: ../ :mrdocs: Returns true when the position is null (no file assigned). == Synopsis Declared in `<flatfile.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- bool IsNull() const; ---- == Return Value true if the file index is ‐1. [.small]#Created with https://www.mrdocs.com[MrDocs]#