Is there a way to use inheritance to extend a ZO control?

[Lodur]

I am specifically looking for a way to extend ZO_MenuBar.

http://esodata.uesp.net/100011/src/l...r.lua.html#548

The thing is the that the 'class' is file local:

local MenuBar = ZO_Object:Subclass()

And is created by creating from virtual:

local menuBar = CreateControlFromVirtual("testBar", GuiRoot, "ZO_MenuBarTemplate")

Unfortunately this seems to me to really hide the code to the point I can not use it as a base 'class' to a menu bar that is multi select.

Is there a known way of subclassing a type like this?

-Thanks

[merlight]

You can get the class from an existing object, e.g.

MenuBarClass = getmetatable(ZO_MainMenuCategoryBar.m_object)