File Content Extraction 26.1
Filter SDK C Programming Guide

# fpFilterToFile()

Filters text from a document and outputs the text to a file.

## Syntax

    KVErrorCode (pascal* fpFilterToFile)(
        KVDocument pDocument,
        const char* szOutputFile);

## Arguments

`pDocument` | A `KVDocument` that you created with fpOpenDocumentFromFile() or fpOpenDocumentFromStream().
`szOutputFile` | A pointer to a string that contains the path of the output file. On Windows, the path must be encoded in the local Windows code page.

## Returns

The return value is an error code.

- If the call is successful, the return value is `KVError_Success` and the plain text content of the document is output to the file you specified.
- If the call is unsuccessful, the return value is an error code that indicates the problem.

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Version 26.1 | Last updated January 2026

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Product: File Content Extraction 26.1

Topic Title: fpFilterToFile()