Echelon OpenLNS - Manual (Page 1004)

OpenLNS Programmer's Reference 967
instead of Windows messaging.
You must call the Advise
method from the event handler
that is handling the update error events for the network
variable monitor point. For more information on this, see
the Advise method of the NvMonitorPoint object .
The object created in step 1 will now call this method
whenever a network variable monitor point error is received.
Availability Local and full clients.
Syntax object. UpdateErrorEvent updateType
Element Description
object An object that implements either the
ILcaNvMonitorPointListener interface.
updateType A value indicating the type of monitor
point update which returned an error.
This will be set to 1.
Added to API LNS Release 3.0.
UpdateEvent
Summary Allows an object to execute a callback for network variable
monitor point updates. This can only be used in
multi-threading programming environments such as Visual
C++. It cannot be used in Visual Basic. To cause events to be
generated in this manner, follow these steps:
1. Create an object that implements the
ILcaNvMonitorPointListener interface.
2. Define the object's behavior when the UpdateEvent
method is called .
3. Call the Advise method of the NvMonitorPoint object
with the object created in step 1 as the object element.
OpenLNS will then provide event notification of update
events using callbacks instead of Windows messaging.
You must call the Advise method from the event handler
that is handling the update events for the network
variable monitor point. For more information, see the
Advise method of the NvMonitorPoint object .
For completion code messages, the InputDp, OutputDp, and
Src parameters are NULL.
Availability Local and full clients.
Syntax UpdateErrorEvent (UpdateType as Integer)
Element Description
object An object that implements the
ILcaNvMonitorPointListener interface.
updateType A value indicating the type of network
variable monitor point update. This will