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# XblMultiplayerEventArgsMembersCount

> XblMultiplayerEventArgsMembersCount

# XblMultiplayerEventArgsMembersCount

Retrieves additional information for `XblMultiplayerEventType::MemberJoined` and `XblMultiplayerEventType::MemberLeft` events.

## Syntax

```cpp theme={null}
HRESULT XblMultiplayerEventArgsMembersCount(  
         XblMultiplayerEventArgsHandle argsHandle,  
         size_t* memberCount  
)  
```

### Parameters

*argsHandle*   \_In\_\
Type: [XblMultiplayerEventArgsHandle](/reference/live/xsapi-c/multiplayer_manager_c/handles/xblmultiplayereventargshandle)

The event arguments handle for the multiplayer event.

*memberCount*   \_Out\_\
Type: size\_t\*

The size of the `members` caller-allocated array for [XblMultiplayerEventArgsMembers](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsmembers).

### Return value

Type: HRESULT

HRESULT return code for this API operation.

## Remarks

Call this function before you call the [XblMultiplayerEventArgsMembers](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsmembers) function, to return the size of the array you must allocate for the `members` parameter of the [XblMultiplayerEventArgsMembers](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsmembers) function. <br />The event arguments handle for a multiplayer event can be retrieved from the `EventArgsHandle` member of the [XblMultiplayerEvent](/reference/live/xsapi-c/multiplayer_manager_c/structs/xblmultiplayerevent) structure for that multiplayer event.  <br />For more information about multiplayer events, see [Multiplayer Manager API overview](/services/xbox-services/multiplayer/mpm/concepts/live-multiplayer-manager-api-overview).

## Requirements

**Header:** multiplayer\_manager\_c.h

**Library:** Microsoft.Xbox.Services.14x.GDK.C.lib

## See also

[multiplayer\_manager\_c](/reference/live/xsapi-c/multiplayer_manager_c/multiplayer_manager_c_members)\
[XblMultiplayerEventArgsFindMatchCompleted](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsfindmatchcompleted)\
[XblMultiplayerEventArgsMember](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsmember)\
[XblMultiplayerEventArgsMembers](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsmembers)\
[XblMultiplayerEventArgsPerformQosMeasurements](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsperformqosmeasurements)\
[XblMultiplayerEventArgsPropertiesJson](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargspropertiesjson)\
[XblMultiplayerEventArgsXuid](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsxuid)\
[XblMultiplayerEventType](/reference/live/xsapi-c/multiplayer_manager_c/enums/xblmultiplayereventtype)


## Related topics

- [XblMultiplayerEventArgsMember](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsmember.md)
- [XblMultiplayerEventArgsMembers](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsmembers.md)
- [XblMultiplayerEventArgsXuid](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsxuid.md)
- [XblMultiplayerEventArgsPropertiesJson](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargspropertiesjson.md)
- [XblMultiplayerEventArgsFindMatchCompleted](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsfindmatchcompleted.md)