Hi Everyone, I’m working on the project where customer has the requirement to have a TreeView on multiple levels (10) where each level can have up to 64 sublevels and so on… You can think about the object browsing in UAExpert. This is very complex to design in an compound widget (thought nested Gro…

Hi @kovarj , I’m in contact with mappView PM regarding this. Most likely I’ll have to study a possible implementation in WTDC.

Hi, what is the status of this topic, have you found solution for you?

WDTC (Widget Development Tool Chain) is something I have high expectations for. Filipe, I know that you are an expert. Can you share your solution with us later, at least the general concept? That would be cool and appreciated by the community :slight_smile:

Hi @filipe.costa , I moved your question from the general forum to this new category because you were advised to use WDTC. Have you had time to get some experiences with WTDC you can share with us?

Hi @kovarj , Unfortunately not yet. For the TreeView we could find a much more simple solution for customer! Thanks for asking!

Hi @filipe.costa I could take a look at a TreeView widget if you want, just a question about it, for inputs data it’s a formated file like JSON or XML ? Did the configuration of the Tree could change during runtime ? Regards, Florent

HI @florent.boissadier , The idea was to have a tree view like in Ua Expert to browse through the nodes and select one node as source for a gauge data display. Inputs => result of the UA_Browse FUB of Library AsOpcUac (AR 6.X) Yes the configuration of the tree view can change during runtime depen…

Hi, Ok so you want a OPC UA Browser widget, where you can select a node and get the nodeId with : namespace identifier type (interger, string …) identifier (example “::AsGlobalPV:testvar”) Is this widget is for an B&R OpcUa server or for generic OpcUa servers ?

Hi @florent.boissadier , In customer use case the purpose was to browse and select nodes on an third party Opc Ua Server. As I said we decided together with customer a simpler approach with one level tree view. But if you decided to make your own Treeview multi levels that would be awesome for the …

Looking forward to see solution using WDTC @florent.boissadier :slight_smile:

Hi @filipe.costa Sorry for the late response, I was busy on others things ! I’ve work a bit on the widget, it’s based on the OpcUa servers you have in the mappView settings : [image] In this example I use a local OpcUa server as example. Based on the Alias you’ve set in the config, you can pas…

TreeView in mappView

CoLab Projects Widget Development Tool Chain

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New features for OPC UA browsing in recent mappView versions HMI & Visualization mapp-view	2	148	May 4, 2026
WDTC widget \| The OpcUa viewer widget Widget Development Tool Chain wdtc-idea , wdtc-widget	23	701	May 18, 2026
Easy HMI "Watch" HMI & Visualization mapp-view	4	297	August 4, 2025
Get OPC UA Server Hierarchy dynamically with library AsOpcUaC B&R Software & Runtime opc-ua	4	349	May 24, 2024
Calling OPC UA server Method using mappView Widgets HMI & Visualization mapp-view , opc-ua	4	157	April 2, 2026

TreeView in mappView

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