SchedUnregisterExternalEvent (FUN)

FUNCTION SchedUnregisterExternalEvent : RTS_IEC_RESULT

<description> <p>Unregister an external event, which was registered by SchedRegisterExternalEvent() before.</p> <p>This function should be called on system shutdown</p> <p>Valid Hook: CH_EXIT2</p> </description> <param name=”hExtEvent” type=”IN”>Handle to the external event, that should be unregistered.</param> <errorcode name=”RTS_IEC_RESULT” type=”ERR_OK”>Event was deregistered successfully</errorcode> <errorcode name=”RTS_IEC_RESULT” type=”ERR_PARAMETER”>The event handle was not registered before</errorcode> <result>Error code</result>

InOut:

Scope	Name	Type
Return	SchedUnregisterExternalEvent	RTS_IEC_RESULT
Input	hExtEvent	RTS_IEC_HANDLE