This function is part of the Presence Interface.
Remarks
Register to receive notifications when presence changes. If the returned NotificationId is valid, you must call RemoveNotifyOnPresenceChanged when you no longer wish to have your NotificationHandler called
Return Value
Notification ID representing the registered callback if successful, an invalid NotificationId if not
See Also
EOS_INVALID_NOTIFICATIONID, EOS_Presence_RemoveNotifyOnPresenceChanged
Parameters
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Parameter Type And Name |
Usage Information |
|---|---|
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EOS_HPresence Handle |
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const EOS_Presence_AddNotifyOnPresenceChangedOptions* Options |
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void* ClientData |
Data the is returned to when NotificationHandler is invoked |
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const EOS_Presence_OnPresenceChangedCallback NotificationHandler |
The callback to be fired when a presence change occurs |
This function enables your callback (the NotificationHandler parameter) to respond to events that happen on the back-end service. Remember to remove your callback function when it is no longer needed.
Callback Function Information
Because this function is asynchronous, it employs a callback of type EOS_Presence_OnPresenceChangedCallback to report the results of its operation.
Callback Remarks
Callback for information related to notifications from EOS_Presence_AddNotifyOnPresenceChanged triggering.
Callback Parameters
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Parameter Type And Name |
Usage Information |
|---|---|
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const EOS_Presence_PresenceChangedCallbackInfo* Data |