Force app to start in systray at autostart (in i3wm)

On i3 I start qstardict at the session opening with the following line on the i3config :

exec  --no-startup-id qstardict

So, Qstartdict open its window at each session starting witch is messy. Unfortunately, Qstardict haven’t a built-in option for opening itself in systray. #### The question Then, is their any solution to force an app to start in systray? I read somewhere that this kind of function is highly wm-related. So if needed, my wm is i3wm.