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How devs can set up parameters properly in AUM etc

I asked Nikolozi about this yesterday, because I want all devs to do the nice nested submenus for AU parameters in AUM, like he did for Mela.

Here is his response, every helpful. So if you see an app that doesn't do this properly, and just has a list of parameters that are chaotically organized, send this to them! By the way this doesn't work for Juce apps. Anyone know if there is a solution for those?

"It makes so much sense to have a proper tree structure for parameters, like how it’s done on the desktop. I’m glad Jonatan (of AUM) implemented properly on the host side, because GarageBand for example, still hasn’t. Even though I submitted a bug report about it to Apple, as far back as iOS 9. GB still lists parameters as a flat list.

Developers need to use this API:
https://developer.apple.com/documentation/audiotoolbox/auparametertree/1439002-creategroup

They will need call the above API and it will take an array of related AUParameter objects to create AUParameterGroup. And then these groups can be added to the create the AUParameterTree. i.e. rather than adding AUParameters directly to the tree they instead add AUParameterGroups to it. Note that groups can contain other groups as well. This means you can have a tree with multiple levels."

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