File Content Extraction 26.1
Filter SDK C++ Programming Guide

# may_contain_subfiles

Returns whether the subfile might contain subfiles. To determine conclusively whether it contains subfiles, you must extract it and process it like other containers.

## Syntax

    bool may_contain_subfiles() const;

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Version 26.1 | Last updated January 2026

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Product: File Content Extraction 26.1

Topic Title: may_contain_subfiles