> ## 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.

# PartyXblManager::StartProcessingStateChanges

> 检索自上次此类调用以来要处理的所有 Party XBOX Live 状态更改的数组。

检索自上次此类调用以来要处理的所有 Party XBOX Live 状态更改的数组。

## 语法

```cpp theme={null}
PartyError StartProcessingStateChanges(  
    uint32_t* stateChangeCount,  
    PartyXblStateChangeArray* stateChanges  
)  
```

### 参数

**`stateChangeCount`**   uint32\_t\*\
*输出*

用于写入标题在 `stateChanges` 数组中要处理的 PartyXblStateChange 条目数量的位置。

**`stateChanges`**   [PartyXblStateChangeArray\*](/services/playfab/multiplayer/networking/xblreference/xbltypedefs)\
*大小为 `*stateChangeCount` 的库分配的输出数组*

用于存储指向所有 PartyXblStateChange 条目数组的指针的位置,标题应处理这些条目,然后传递给 FinishProcessingStateChanges()。

### 返回值

PartyError

若调用成功则返回 `c_partyErrorSuccess`,否则返回错误代码。可通过 [GetErrorMessage()](/services/playfab/multiplayer/networking/xblreference/classes/PartyXblManager/methods/partyxblmanager_geterrormessage) 检索该错误代码的可读形式。

## 备注

此方法为 Party XBOX Live 帮助程序库提供一个机会,以检索自上次调用此方法以来标题当前可用的所有更改的列表。标题应使用所提供的 0 个或多个更改的数组更新其自身状态或 UI,然后及时调用 [FinishProcessingStateChanges()](/services/playfab/multiplayer/networking/xblreference/classes/PartyXblManager/methods/partyxblmanager_finishprocessingstatechanges) 并传入这些更改。<br /><br /> 库公开的状态可能会在此调用期间发生变化,因此您必须在使用它时保证线程安全。应频繁调用 StartProcessingStateChanges() —— 至少每 100 毫秒一次。它设计为快速执行和返回,以便可以在主 UI 线程上调用而影响可忽略不计。为获得最佳结果,还应尽量减少在调用 FinishProcessingStateChanges() 之前处理状态更改所花费的时间。<br /><br /> 由 StartProcessingStateChanges() 返回的每个状态更改必须准确地返回给 FinishProcessingStateChanges() 一次,但可以按不同顺序返回,并且可以与其他 StartProcessingStateChanges() 调用返回的状态更改交错。与特定状态更改关联的任何资源都保证在状态更改返回给 FinishProcessingStateChanges() 之前保持有效。

## 要求

**头文件:** PartyXboxLive.h

## 另请参阅

[PartyXblManager](/services/playfab/multiplayer/networking/xblreference/classes/PartyXblManager/partyxblmanager)\
[PartyXblStateChange](/services/playfab/multiplayer/networking/xblreference/structs/partyxblstatechange)\
[PartyXblManager::FinishProcessingStateChanges](/services/playfab/multiplayer/networking/xblreference/classes/PartyXblManager/methods/partyxblmanager_finishprocessingstatechanges)


## Related topics

- [PartyXblManager::FinishProcessingStateChanges](/zh-CN/services/playfab/multiplayer/networking/xblreference/classes/PartyXblManager/methods/partyxblmanager_finishprocessingstatechanges.md)
- [PartyXblStateChange](/zh-CN/services/playfab/multiplayer/networking/xblreference/structs/partyxblstatechange.md)
- [PartyXblLocalChatUser::GetAccessibilitySettings](/zh-CN/services/playfab/multiplayer/networking/xblreference/classes/PartyXblLocalChatUser/methods/partyxbllocalchatuser_getaccessibilitysettings.md)
- [PartyManager::StartProcessingStateChanges](/zh-CN/services/playfab/multiplayer/networking/reference/classes/PartyManager/methods/partymanager_startprocessingstatechanges.md)
- [PartyManager::FinishProcessingStateChanges](/zh-CN/services/playfab/multiplayer/networking/reference/classes/PartyManager/methods/partymanager_finishprocessingstatechanges.md)