EventUnregisterCallback (FUN)

FUNCTION EventUnregisterCallback : RTS_IEC_RESULT

Unregister a callback interface from an event specified by handle and callback interface

InOut:

Scope	Name	Type	Comment
Return	EventUnregisterCallback	RTS_IEC_RESULT
Input	hEvent	RTS_IEC_HANDLE	Event handle
	hInterface	RTS_IEC_HANDLE	Callback handle is returned by EventRegisterCallback() or EventRegisterCallback2()!!!