protected override void OnClosing(CancelEventArgs e)
{
//keep this running on main thread, otherwise it will terminated before the task is done.
this.Hide();
searchPanel?.Close();
chromaTimer?.Dispose();
//defaultAudioEndpointTimer?.Dispose();
wallpaper?.Dispose();
player?.Dispose();
chroma?.Dispose();
OutputDevice.ActiveDevice?.Dispose();
base.OnClosing(e);
}