> ## Documentation Index
> Fetch the complete documentation index at: https://docs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# PartyLocalChatControl::GetAudioOutput

> 提供聊天控件已配置为用于音频输出的首选扬声器或耳机设备。

提供聊天控件已配置为用于音频输出的首选扬声器或耳机设备。

## Syntax

```cpp theme={null}
PartyError GetAudioOutput(  
    PartyAudioDeviceSelectionType* audioDeviceSelectionType,  
    PartyString* audioDeviceSelectionContext,  
    PartyString* deviceId  
)  
```

### Parameters

**`audioDeviceSelectionType`**   [PartyAudioDeviceSelectionType\*](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/enums/partyaudiodeviceselectiontype.md)\
*output*

一个输出值，指示用于选择所提供 `deviceId` 的选择类型。

**`audioDeviceSelectionContext`**   [PartyString\*](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/typedefs.md)\
*library-allocated output*

当使用 [PartyAudioDeviceSelectionType::None](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/enums/partyaudiodeviceselectiontype.md) 或 [PartyAudioDeviceSelectionType::SystemDefault](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/enums/partyaudiodeviceselectiontype.md) 时，`audioDeviceSelectionContext` 将为空。当使用 [PartyAudioDeviceSelectionType::PlatformUserDefault](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/enums/partyaudiodeviceselectiontype.md) 或 [PartyAudioDeviceSelectionType::Manual](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/enums/partyaudiodeviceselectiontype.md) 时，`audioDeviceSelectionContext` 将是先前调用 [SetAudioOutput()](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/classes/PartyLocalChatControl/methods/partylocalchatcontrol_setaudiooutput.md) 时提供的值。字符串的内存保持有效，直到通过 [PartyManager::StartProcessingStateChanges()](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/classes/PartyManager/methods/partymanager_startprocessingstatechanges.md) 提供下一个 [PartyLocalChatAudioOutputChangedStateChange](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/structs/partylocalchataudiooutputchangedstatechange.md) 或聊天控件被销毁为止。

**`deviceId`**   [PartyString\*](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/typedefs.md)\
*library-allocated output*

一个输出值，指示所选音频输出设备的标识符。字符串的内存保持有效，直到通过 [PartyManager::StartProcessingStateChanges()](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/classes/PartyManager/methods/partymanager_startprocessingstatechanges.md) 提供下一个 [PartyLocalChatAudioOutputChangedStateChange](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/structs/partylocalchataudiooutputchangedstatechange.md) 或聊天控件被销毁为止。

### Return value

PartyError

如果调用成功，则返回 `c_partyErrorSuccess`；否则返回错误代码。可通过 [PartyManager::GetErrorMessage()](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/classes/PartyManager/methods/partymanager_geterrormessage.md) 检索错误代码的可读形式。

## Remarks

空的设备标识符字符串表示未选择任何输出。

## Requirements

**Header:** Party.h

## See also

[PartyLocalChatControl](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/classes/PartyLocalChatControl/partylocalchatcontrol.md)\
[PartyLocalChatControl::SetAudioOutput](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/classes/PartyLocalChatControl/methods/partylocalchatcontrol_setaudiooutput.md)\
[PartyLocalChatControl::GetAudioInput](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/classes/PartyLocalChatControl/methods/partylocalchatcontrol_getaudioinput.md)


## Related topics

- [PartyLocalChatControl::SetAudioOutput](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/classes/PartyLocalChatControl/methods/partylocalchatcontrol_setaudiooutput.md)
- [PartyLocalChatControl::GetAudioInput](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/classes/PartyLocalChatControl/methods/partylocalchatcontrol_getaudioinput.md)
- [PartyLocalChatControl::SetAudioInput](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/classes/PartyLocalChatControl/methods/partylocalchatcontrol_setaudioinput.md)
- [PartyLocalChatControl](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/classes/PartyLocalChatControl/partylocalchatcontrol.md)
- [PartyLocalChatControl::GetAudioRenderVolume](https://docs.xbox.com/zh-CN/services/playfab/multiplayer/networking/reference/classes/PartyLocalChatControl/methods/partylocalchatcontrol_getaudiorendervolume.md)