/// <summary>
/// Register a callback listening function to be called when a listening event (e.g. data is received with Tellstick Duo) occurs
/// </summary>
/// <param name="listeningFunc">Callback function to be called</param>
/// <param name="obj">Context object that will be echoed back when function is called. Only the object when the first function is registered will be used. Set to null if not used.</param>
/// <returns>Callback event id</returns>
public unsafe int tdRegisterRawDeviceEvent(RawListeningCallbackFunction listeningFunc, Object obj)
{
int returnValue = 0;
if (rawListenerList.Count == 0)
{
//first added, register with dll too
//only the context object of the first event will be registered
UnmanagedImport.RawListeningDelegate listeningFunctionDelegate = new UnmanagedImport.RawListeningDelegate(rawListeningFunction);
registeredRawListenerFunctionId = UnmanagedImport.tdRegisterRawDeviceEvent(listeningFunctionDelegate, (void *)null);
GC.Collect();
callbackFunctionReferenceList.Add(registeredRawListenerFunctionId, listeningFunctionDelegate);
}
++lastEventID;
returnValue = lastEventID;
RawEventFunctionContext rawEventFuncContext = new RawEventFunctionContext();
rawEventFuncContext.rawCallbackFunc = listeningFunc;
rawEventFuncContext.context = obj;
rawEventFuncContext.callbackId = returnValue;
rawListenerList.Add(returnValue, rawEventFuncContext);
return(returnValue);
}