> ## 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.

# 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()](/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pfmultiplayer/functions/pfmultiplayergeterrormessage) 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()](/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/functions/pfmultiplayerjoinlobby) 建立的，則在 [PFMultiplayerStartProcessingLobbyStateChanges()](/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/functions/pfmultiplayerstartprocessinglobbystatechanges) 提供 [PFLobbyUpdatedStateChange::maxMembersUpdated](/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/structs/pflobbyupdatedstatechange) 設定為 true 的 [PFLobbyUpdatedStateChange](/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/structs/pflobbyupdatedstatechange) 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](/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/structs/pflobbyjoinlobbycompletedstatechange) 時已填入此欄位。 <br /><br /> 如果此大廳物件是透過呼叫 [PFMultiplayerClaimServerLobby()](/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/functions/pfmultiplayerclaimserverlobby) 建立的，則在 [PFMultiplayerStartProcessingLobbyStateChanges()](/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/functions/pfmultiplayerstartprocessinglobbystatechanges) 提供 [PFLobbyUpdatedStateChange::maxMembersUpdated](/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/structs/pflobbyupdatedstatechange) 設定為 true 的 [PFLobbyUpdatedStateChange](/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/structs/pflobbyupdatedstatechange) 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](/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/structs/pflobbyclaimserverlobbycompletedstatechange) 時已填入此欄位。

## 需求

**標頭：** PFLobby.h

## 另請參閱

[PFLobby 成員](/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/pflobby_members)


## Related topics

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