---
title: soWordCallBack
framework: applicationservices
role: symbol
role_heading: Global Variable
path: applicationservices/sowordcallback
---

# soWordCallBack

## Declaration

```swift
var soWordCallBack: OSType { get }
```

## Discussion

Discussion Set the callback function to be called everytime the Speech Synthesis Manager is about to generate a word onthe speech channel. The speechInfo parameteris a pointer to an application-defined word callback function, whose syntax is described in SpeechWordProcPtr.Passing NULL in speechInfo disablesthe word callback function. This selector works with the SetSpeechInfo function.