pub type AUParameterObserver = *mut DynBlock<dyn Fn(AUParameterAddress, AUValue)>;Available on crate features
AUParameters and block2 only.Expand description
A block called to signal that the value of a parameter has changed.
See the discussion of -[AUParameterNode tokenByAddingParameterObserver:].
Parameter address: The address of the parameter whose value changed.
Parameter value: The current value of the parameter.
See also Apple’s documentation