Provides a callback to indicate that activation of a WASAPI interface is complete.
interface IActivateAudioInterfaceCompletionHandler : public IUnknown
When to implement: An application implements this interface if it calls the ActivateAudioInterfaceAsync function.
The implementation must be agile (aggregating a free-threaded marshaler).
Header: Declared in mmdeviceapi.h.
Library: Use MMDevApi.lib.