Simple GUI question?

[The_Kez]

Hopefully it's simple anyways.
When you right click in the f7 playerlist menu, it comes up with a context menu. In the context menu there are horizontal rules which I'm trying to replicate.

In the past when I've used GuiMenuCtrl, I can just say addrow( -1, "-" ); and that creates the horizontal rule.
In a context menu like this though I can't get that same thing to work. I'm assuming it's because I'm using the wrong Gui Control (I'm creating a new GUI TextListCtrl to do it). So if it -is- that, what is the name of the actual GUI Control I should be using? If that's not the issue, does anyone know what is?