Well, I'm rather searching for the actual command which is executed if the taskbar applet is used. I think it is a qcop message.
But I don't know which one.
The Start Menu entries for "connect" and "disconnect" (/opt/Qtopia/apps/__6x0?0*.desktop) have "Embedded=network_connect" and "Embedded=network_disconnect" in the place where other apps have their command line.
But I do not know what this really does.
Thanks
daniel