Echelon OpenLNS - Manual (Page 691)

OpenLNS Programmer's Reference 654
UpdateErrorEvent
Summary Indicates that a write failure or a poll failure has occurred on
the network variable monitor point that generated the event.
This event can only be used in development environments
that support events being generated on threads other than
the client thread (such as Visual C++). In these
environments, it is usually more efficient to generate events
from a non-client thread.
To cause events to be generated in this manner, create an
object which implements the ILcaNvMonitorPointListener
interface and calls an NvMonitorPoint object's Advise method
with the created object as the argument. The object will now
receive these events directly. The behavior of the object
depends on how the user implements the UpdateEvent
method.
Syntax UpdateErrorEvent (UpdateType as Integer)
Element Description
updateType This element always returns the value
1.
Data Type Integer.
Added to API LNS Release 3.0.
UpdateEvent
Summary Indicates that a network variable monitor point update has
arrived.
This event can only be used in development environments
that support events being generated on threads other than
the client thread (such as Visual C++). In these
environments, it is usually more efficient to generate events
from a non-client thread.
To cause events to be generated in this manner, create an
object which implements the ILcaNvMonitorPointListener
interface and calls an NvMonitorPoint object's Advise method
with the created object as the argument. The object will now
receive these events directly. The behavior of the object
depends on how the user implements the UpdateEvent
method.
For completion code messages, the InputDp, OutputDp, and
Src parameters are NULL.
Syntax UpdateErrorEvent (UpdateType as Integer)
Element Description
UpdateType This element always returns the value
0.
The possible values for this parameter,