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# XblRealTimeActivityResyncHandler

> Callback type that's called when the Real-Time Activity (RTA) service sends a resync message.

Handler function for when there is a resync message from the Real-Time Activity (RTA) service.

## Syntax

```cpp theme={null}
void XblRealTimeActivityResyncHandler(  
         void* context  
)  
```

### Parameters

*context*   \_In\_opt\_\
Type: void\*

Caller context that will be passed back to the handler function.

### Return value

Type: void

## Requirements

**Header:** real\_time\_activity\_c.h

**Library:** Microsoft.Xbox.Services.142.C.lib or Microsoft.Xbox.Services.143.C.lib

## See also

[real\_time\_activity\_c](https://docs.xbox.com/reference/live/xsapi-c/real_time_activity_c/real_time_activity_c_members.md)


## Related topics

- [XblRealTimeActivityAddResyncHandler](https://docs.xbox.com/reference/live/xsapi-c/real_time_activity_c/functions/xblrealtimeactivityaddresynchandler.md)
- [real_time_activity_c (contents)](https://docs.xbox.com/reference/live/xsapi-c/real_time_activity_c/real_time_activity_c_members.md)
- [XblRealTimeActivityRemoveResyncHandler](https://docs.xbox.com/reference/live/xsapi-c/real_time_activity_c/functions/xblrealtimeactivityremoveresynchandler.md)
- [XblRealTimeActivitySubscriptionErrorHandler](https://docs.xbox.com/reference/live/xsapi-c/real_time_activity_c/functions/xblrealtimeactivitysubscriptionerrorhandler.md)
- [XblRealTimeActivityConnectionStateChangeHandler](https://docs.xbox.com/reference/live/xsapi-c/real_time_activity_c/functions/xblrealtimeactivityconnectionstatechangehandler.md)