Unsubscribe(String,EventSummaryCallback,IntPtr)
Unsubscribes to event channels matching the specified id, callback, and userData.
Passing NULL values makes it possible to unsubscribe from multiple channels in the same call.
Sending a NULL or empty id matches any id.
Sending a NULL callback matches any callback.
Sending a NULL userData matches any userData.
The call is synchronous.
See Subscribe(String,EventSummaryCallback,IntPtr) for more information.
Parameters
id : string : Name of the channel to unsubscribe from.
callback : EventSummaryCallback : The EventSummaryCallback that specifies the function to call when the data is available.
userData : IntPtr : The userData sent to the callback when invoked.
Return
Status : Status that indicates if the operation succeeds.