BrightnessTray.MainWindow.ReleaseHandlers C# (CSharp) Метод

        private void ReleaseHandlers()
        {
            if (this.PreferenceEvent != null || this.PreferenceEventHandler != null)
            {
                SystemEvents.UserPreferenceChanged -= this.PreferenceEventHandler;
                this.PreferenceEvent = null;
                this.PreferenceEventHandler = null;
            }
        }