File Content Extraction 25.4
Filter SDK C++ Programming Guide

# parent

If the subfiles are arranged in a hierarchy, this returns the index of the parent of this subfile. Returns `-1` if no other subfile is a parent to this subfile.

## Syntax

    int64_t Subfile::parent() const

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Version 25.4 | Last updated October 2025

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Product: File Content Extraction 25.4

Topic Title: parent