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

# XblMultiplayerAddSubscriptionLostHandler

> XblMultiplayerAddSubscriptionLostHandler

# XblMultiplayerAddSubscriptionLostHandler

註冊事件處理常式，以在多人遊戲訂閱遺失時接收通知。使用傳回的 XblFunctionContext 取消註冊處理常式。

## 語法

```cpp theme={null}
XblFunctionContext XblMultiplayerAddSubscriptionLostHandler(  
         XblContextHandle xblContext,  
         XblMultiplayerSessionSubscriptionLostHandler* handler,  
         void* context  
)  
```

### 參數

*xblContext*   \_In\_\
類型：[XblContextHandle](/zh-TW/reference/live/xsapi-c/types_c/handles/xblcontexthandle)

本機使用者的 XBOX Live 內容。

*handler*   \_In\_\
類型：XblMultiplayerSessionSubscriptionLostHandler\*

接收通知的回呼函式。

*context*   \_In\_opt\_\
類型：void\*

要傳遞給處理常式的呼叫端內容。

### 傳回值

類型：XblFunctionContext

為事件註冊的函式內容權杖。

## 需求

**標頭：** multiplayer\_c.h

**程式庫：** Microsoft.Xbox.Services.14x.GDK.C.lib

## 另請參閱

[multiplayer\_c](/zh-TW/reference/live/xsapi-c/multiplayer_c/multiplayer_c_members)


## Related topics

- [從 MPSD 移至 PlayFab Multiplayer 與 MPA](/zh-TW/services/xbox-services/multiplayer/mpsd/concepts/live-mpsd-to-mlp.md)
- [XblMultiplayerRemoveSubscriptionLostHandler](/zh-TW/reference/live/xsapi-c/multiplayer_c/functions/xblmultiplayerremovesubscriptionlosthandler.md)
- [XblMultiplayerSessionSubscriptionLostHandler](/zh-TW/reference/live/xsapi-c/multiplayer_c/functions/xblmultiplayersessionsubscriptionlosthandler.md)
- [XblMultiplayerAddSessionChangedHandler](/zh-TW/reference/live/xsapi-c/multiplayer_c/functions/xblmultiplayeraddsessionchangedhandler.md)
- [XblMultiplayerActivityAddInviteHandler](/zh-TW/reference/live/xsapi-c/multiplayer_activity_c/functions/xblmultiplayeractivityaddinvitehandler.md)