ZO_MenuBarTemplate

[Weolo]

I want to have a series of buttons which act like radio buttons, only one can be chosen at a time. I fould information on ZO_MenuBarTemplate and it seemed perfect but when I try to use it I get an error.

This is how I set it up.
XML

<GuiXml>
    <Controls>
        <Control name="testBar1" inherits="ZO_MenuBarTemplate" virtual="true">
        </Control>
    </Controls>
</GuiXml>

LUA

local menuBar = CreateControlFromVirtual("testBar1", GuiRoot, "ZO_MenuBarTemplate")
menuBar:SetAnchor(TOPRIGHT, GuiRoot, TOPRIGHT, 0, 0)
local data = {
    descriptor = "fancy",
    normal = "EsoUI/Art/Inventory/inventory_tabIcon_weapons_up.dds",
    pressed = "EsoUI/Art/Inventory/inventory_tabIcon_weapons_down.dds",
    disabled = "EsoUI/Art/Inventory/inventory_tabIcon_weapons_disabled.dds",
    highlight = "EsoUI/Art/Inventory/inventory_tabIcon_weapons_over.dds",
    callback = function(tabData) d("Menu button clicked") end,
}
local newControl = ZO_MenuBar_AddButton(menuBar, data)

Error

EsoUI/Libraries/ZO_MenuBar/ZO_MenuBar/lua:383: attempt to index a nil value
stack traceback:
EsoUI/Libraries/ZO_MennuBar/ZO_MenuBar.lua:383: in function 'MenuBar:AddButton'
(tail call): ?

Then the lines of code from my addon which started this off, which is the "ZO_MenuBar_AddButton(menuBar, data)" line 11 in my example above.

I am doing something wrong, can anyone spot what it is?

[Garkin]

You have to call ZO_MenuBar_SetData(menuBar, barData) before you add buttons. SetData will create control pool which you need for buttons.

Template "ZO_DefaultMenuBar" has this call already in OnInitialized handler, so you can just change template from "ZO_MenuBarTemplate" to "ZO_DefaultMenuBar".

If you want to set data manually, add to your code something like this:

local barData = {
    buttonPadding = 20,
    normalSize = 51,
    downSize = 64,
    animationDuration = DEFAULT_SCENE_TRANSITION_TIME,
    buttonTemplate = "ZO_MenuBarButtonTemplate1",
}
ZO_MenuBar_SetData(menuBar, barData)

[Weolo]

Brilliant!
Great answer as always Garkin, I will add that in to my code right now and give it a whirl.

Ahh no better wait for ESO to patch in to Tamriel Unlimited

Thanks for the help