How do non-GUI plugins receive messages?

Hi!
I try to develop an LCD plugin. This plugin has of course no GUI, but has to receive messages from other plugins and from MP itself. Any idea on how this can be done?

[frodo]

yes.
simply register yourself by:

public void override Start()
{
   GUIWindowManager.Receivers += new SendMessageHandler(OnMessage);
}

private void OnMessage(GUIMessage message)
{
    switch (message.Message)
    {
       // do your stuff here
    }
}