> But params.hasDefaults() should be checked on every object-hit (it's 
> changed by several objects). So it should be something like
> 
>       if (ob == any_object) {
>       BufferParams params = lv_->buffer()->params;
>       setEnabled(class_->button_reset_defaults, !params.hasClassDefaults());
>       }
> 
> Is that possible?

Sure! Just remove the if-statement wrapper. Then it's executed every time 
input is called.

A

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