How do I determine which control in a cluster fired the <All elements> value change event?

[Radiator]

Hello all

I have a cluster (control) which looks like this:

This is a single channel of data, consisting of a gauge with two needles (set point and actual), a separate numeric control linked to the gauge (fixed point data type), three combo boxes and a button. When the user interacts with any of  these items I generate a Modbus packet to retrieve / set the data. My current implementation uses events, one for every single control in the channel - and I have 5 channels. Is there a way of using the <All elements> setting in the event handler and then using the source node (or similar) to determine which control was actually clicked? I might then be able to use an array of clusters to simplify further. I am struggling to understand the source node.

Thanks for any help

Ray

[jcarmody · Accepted solution]

[crossrulz]

As Jim showed, your best bet is to just do a comparison between "New Value" and "Old Value" and search for a FALSE.

The Source just tells you what caused the event to fire.  This gives you a distinction between ActiveX events, User Events, and actions the user performed on the GUI.

[Radiator]

Thanks to you both, I'm glad it was simple.