private static void UnregisterDeviceStateChangedEvent()
{
Native.RemoveDeviceStateChangedCallback(_deviceStateChangedId).
ThrowIfError("Failed to remove the event handler.");
_deviceStateChangedCallback = null;
}
private static void RegisterDeviceStateChangedEvent()
{
_deviceStateChangedCallback = (type, state, _) =>
{
_deviceStateChanged?.Invoke(null, new RecorderDeviceStateChangedEventArgs(type, state));
};
Native.AddDeviceStateChangedCallback(_deviceStateChangedCallback, IntPtr.Zero, out _deviceStateChangedId).
ThrowIfError("Failed to add the event handler.");
}