---
title: soRefCon
framework: Application Services
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.0+]
path: applicationservices/1552228-speech-channel_information_constants/sorefcon
---

# soRefCon

## Declaration

```occ
soRefCon = 'refc'
```

## Discussion

Set a speech channel’s reference constantvalue. The reference constant value is passed to application-definedcallback functions and might contain any value convenient for theapplication. The `speechInfo` parameteris a long integer containing the reference constant value. In contrastwith other selectors, this selector does not require that the `speechInfo` parameter’s valuebe a pointer value. Typically, however, an application does usethis selector to pass a pointer or handle value to callback functions.

This selector works with the `SetSpeechInfo` function.