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# XblMultiplayerActivityAddInviteHandler

> XblMultiplayerActivityAddInviteHandler

# XblMultiplayerActivityAddInviteHandler

Registers an event handler for multiplayer activity invites.

## Syntax

```cpp theme={null}
XblFunctionContext XblMultiplayerActivityAddInviteHandler(  
         XblContextHandle xblContextHandle,  
         XblMultiplayerActivityInviteHandler* handler,  
         void* context  
)  
```

### Parameters

*xblContextHandle*   \_In\_\
Type: [XblContextHandle](/reference/live/xsapi-c/types_c/handles/xblcontexthandle)

XBOX Live context for the local user.

*handler*   \_In\_\
Type: XblMultiplayerActivityInviteHandler\*

The callback function that receives notifications.

*context*   \_In\_opt\_\
Type: void\*

Caller context to be passed to the handler.

### Return value

Type: XblFunctionContext

An `XblFunctionContext` object that can be used to unregister the event handler.

## Remarks

To unregister an event handler for multiplayer activity invites, call the [XblMultiplayerActivityRemoveInviteHandler](/reference/live/xsapi-c/multiplayer_activity_c/functions/xblmultiplayeractivityremoveinvitehandler) function. <br /><br /> For more information about multiplayer activities, see [Activities](/services/xbox-services/multiplayer/mpa/concepts/live-mpa-activities).

## Requirements

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

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

## See also

[multiplayer\_activity\_c](/reference/live/xsapi-c/multiplayer_activity_c/multiplayer_activity_c_members)


## Related topics

- [XblMultiplayerActivityRemoveInviteHandler](/reference/live/xsapi-c/multiplayer_activity_c/functions/xblmultiplayeractivityremoveinvitehandler.md)
- [XblMultiplayerActivityInviteHandler](/reference/live/xsapi-c/multiplayer_activity_c/functions/xblmultiplayeractivityinvitehandler.md)
- [XblMultiplayerActivityInviteData](/reference/live/xsapi-c/multiplayer_activity_c/structs/xblmultiplayeractivityinvitedata.md)
- [XblRealTimeActivityAddResyncHandler](/reference/live/xsapi-c/real_time_activity_c/functions/xblrealtimeactivityaddresynchandler.md)
- [XblRealTimeActivityAddConnectionStateChangeHandler](/reference/live/xsapi-c/real_time_activity_c/functions/xblrealtimeactivityaddconnectionstatechangehandler.md)