# Can AttachedControlBase become derivable?

**URL:** <https://forum.juce.com/t/can-attachedcontrolbase-become-derivable/32159>\
**Category:** General JUCE discussion\
**Created:** [March 7, 2019, 7:09pm UTC](https://forum.juce.com/t/can-attachedcontrolbase-become-derivable/32159 "2019-03-07T19:09:52Z")\
**Posts on this page:** 1\
**Showing post:** 24

<div class="post-metadata">

**Author:** ![tadnicol](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/tadnicol/32/5141_2.png) [@tadnicol](https://forum.juce.com/u/tadnicol)\
**Post date:** [February 6, 2020, 9:26pm UTC](https://forum.juce.com/t/can-attachedcontrolbase-become-derivable/32159/24 "2020-02-06T21:26:37Z")

</div>

I would also like to take the chance to say that `parameterValueChanged` can be called on the audio thread and so using `triggerAsyncUpdate()` is technically not realtime safe here for these attachments. More info here: [APVTS Updates & Thread/Realtime Safety](https://forum.juce.com/t/apvts-updates-thread-realtime-safety/36928)

---

_[View the full topic](https://forum.juce.com/t/can-attachedcontrolbase-become-derivable/32159)._