Introducing: Debug views

December 20, 2023 posted by: joreg

Dear patchers!

With vvvv gamma being used for building more and more complex applications the lack of proper debugging tools became apparent.

With latest vvvv gamma 5.3 previews we’re therefore introducing new views that will help you identify problems in your patches. You can open them via the shortcut Ctrl + F2.

Build Result

This is where you’d look first. Here you’ll see errors, warnings and infos that came up as a result from the build process.

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Doubleclick an entry to jump to its origin where you can fix it. Making sure this list is empty is the first step to a healthy app.

For more info, see Build Result

App Health

Here you’ll see messages coming from your running application. These can be exceptions (the pink nodes) or messages coming from a Warn [VL.Session] node that you can even use yourself in patches to indicate issues.

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For more info, see App Health


The log is collecting all issues over time and shows you the whole history.

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Here you’ll find all messages sent by the system, but also by your app. To create log messages from your patches use the Log [System.Logging] node.

The interesting thing with logging is that you can also route logs to any “logging provider” you prefer. In a real-life project you may want to log certain messages to a file and others to a cloud service. Everything is possible.

For more info, see Log

Showing a Log UI in your own application

We thought about this one step further: Imagine exporting your application. By default you’ve now lost the ability to view your log messages, since the above Log window is part of vvvv itself and not your app.

You want to ship the fancy log view as part of your app? We have you covered, “HowTo Use a LogUI…” for how to set this up.

At this point an unrelated reminder: This is comparable to how you can use the Audio Driver Selection window in your own app, see “HowTo Use the ConfigurationUI…”.

For requesting advanced logging support as part of a priority support agreement we thank Refik Anadol Studio.

If you also have a request for custom development, get in touch!




vvvv - Dießl & Gregor GbR
Oranienstrasse 10
10997 Berlin/Germany
VAT: DE275566955


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