The QCCompositionParameterViewDelegate informal protocol allows your application to define which parameters should be visible in a QCCompositionParameterView object.


Responding to Composition Selections

func compositionParameterView(QCCompositionParameterView!, shouldDisplayParameterWithKey: String!, attributes: [AnyHashable : Any]!) -> Bool

Allows you to define which composition parameters are visible in the user interface when the composition parameter view refreshes.

Responding when an Input Parameter Changes

func compositionParameterView(QCCompositionParameterView!, didChangeParameterWithKey: String!)

Called after an input parameter in the composition parameter view has been edited.