---
title: kSpeechSpeechDoneCallBack
framework: applicationservices
role: symbol
role_heading: Global Variable
path: applicationservices/kspeechspeechdonecallback
---

# kSpeechSpeechDoneCallBack

Set the callback function to be called when the Speech Synthesis Manager has finished generating speech on the speech channel.

## Declaration

```swift
let kSpeechSpeechDoneCallBack: CFString
```

## Discussion

Discussion The value associated with this property is CFNumber object whose value is a pointer to an application-defined speech-done callback function, whose syntax is described in SpeechDoneProcPtr. Passing NULL for the value of this property disables the speech-done callback function. This property works with the SetSpeechProperty(_:_:_:) function.