> ## 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.

# PFLobbyGetMaxMemberCount

> 使用 PlayFab Multiplayer C++ SDK API 讀取 PlayFab 大廳中允許之最大成員數目的 PFLobbyGetMaxMemberCount 參考。

取得大廳的最大成員計數。

## 語法

```cpp theme={null}
HRESULT PFLobbyGetMaxMemberCount(  
    PFLobbyHandle lobby,  
    uint32_t* maxMemberCount  
)  
```

### 參數

**`lobby`**   PFLobbyHandle

大廳的控制代碼。

**`maxMemberCount`**   uint32\_t\*\
*輸出*

輸出的最大成員計數。

### 傳回值

類型：HRESULT

如果呼叫成功，則為 `S_OK`；否則為錯誤碼。可透過 [PFMultiplayerGetErrorMessage()](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pfmultiplayer/functions/pfmultiplayergeterrormessage.md) 擷取結果的人類可讀形式。

## 備註

如果此大廳物件是透過呼叫 [PFMultiplayerJoinLobby()](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/functions/pfmultiplayerjoinlobby.md) 建立的，則在 [PFMultiplayerStartProcessingLobbyStateChanges()](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/functions/pfmultiplayerstartprocessinglobbystatechanges.md) 提供 [PFLobbyUpdatedStateChange::maxMembersUpdated](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/structs/pflobbyupdatedstatechange.md) 設定為 true 的 [PFLobbyUpdatedStateChange](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/structs/pflobbyupdatedstatechange.md) 之前，此方法會傳回錯誤。 如果加入大廳成功，保證在 PFMultiplayerStartProcessingLobbyStateChanges() 提供 [PFLobbyJoinLobbyCompletedStateChange](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/structs/pflobbyjoinlobbycompletedstatechange.md) 時已填入此欄位。 \
\
 如果此大廳物件是透過呼叫 [PFMultiplayerClaimServerLobby()](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/functions/pfmultiplayerclaimserverlobby.md) 建立的，則在 [PFMultiplayerStartProcessingLobbyStateChanges()](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/functions/pfmultiplayerstartprocessinglobbystatechanges.md) 提供 [PFLobbyUpdatedStateChange::maxMembersUpdated](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/structs/pflobbyupdatedstatechange.md) 設定為 true 的 [PFLobbyUpdatedStateChange](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/structs/pflobbyupdatedstatechange.md) 之前，此方法會傳回錯誤。 如果宣告大廳成功，保證在 PFMultiplayerStartProcessingLobbyStateChanges() 提供 [PFLobbyClaimServerLobbyCompletedStateChange](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/structs/pflobbyclaimserverlobbycompletedstatechange.md) 時已填入此欄位。

## 需求

**標頭：** PFLobby.h

## 另請參閱

[PFLobby 成員](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/pflobby_members.md)


## Related topics

- [Lobby.MaxMemberCount](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/Lobby/MaxMemberCount.md)
- [Lobby.LobbyMaxMemberPropertyCount](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbyConstants/LobbyMaxMemberPropertyCount.md)
- [Lobby.LobbyMaxMemberCountLowerLimit](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbyConstants/LobbyMaxMemberCountLowerLimit.md)
- [Lobby.LobbyMaxMemberCountUpperLimit](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbyConstants/LobbyMaxMemberCountUpperLimit.md)
- [LobbyCreateConfiguration.MaxMemberCount](https://docs.xbox.com/zh-TW/services/playfab/multiplayer/lobby/unity-multiplayer-api-reference/PlayFab.Multiplayer/LobbyCreateConfiguration/MaxMemberCount.md)