There can only be six, so I use an iteration and check type usually (in js). But yeah, it would be much better if control_surfaces didn't just return the __class__ builtins.

Interestingly there can be a lot more than six control_surfaces, but only six can be seen in the Preferences window. When setting a control_surface to none and then to some other surface not all previous surfaces are deleted, due to bad disconnect functions and Ableton Live not always calling the disconnect function.

I found iterating until I get an 'id 0' is a good solution. I have to iterate all surfaces anyway.

LOL yeah, now that I think about it I can confirm that. You're work around seems like a good idea, I think I'll implement the same.

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I stumbled upon a way to get the control_surfaces count.

It's here.

But I like to iterate control_surfaces until I get an 'id 0' more.