File Content Extraction 26.3
Filter SDK C Programming Guide

# fpFileToInputStreamFree()

DEPRECATED: The `fpFileToInputStreamFree()` function is deprecated in KeyView version 23.2 and later. Use fpOpenDocumentFromStream() instead.

This function frees the memory allocated for the input stream created from a file.

## Syntax

    BOOL pascal fpFileToInputStreamFree(
        KVFilterSession   session,
        KVInputStream    *pInput)

## Arguments

`session` | A Filter session that you initialized by calling fpInit().
`pInput` | A pointer to the developer-assigned instance of KVInputStream. The structure `KVInputStream` defines the input stream that contains the source.

## Returns

- If the call is successful, the return value is `TRUE`.
- If the call is unsuccessful, the return value is `FALSE`.

## Discussion

- After filtering is complete, call this function to free the memory allocated by `fpFileToInputStreamCreate()`.
- You can access this function through the KV_GetFilterInterfaceEx() function, or call it directly.

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Version 26.3 | Last updated July 2026

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Product: File Content Extraction 26.3

Topic Title: fpFileToInputStreamFree()