[fatrog]

Hey, thank you,
I should have known that I had to check patch changes >,< my bad..

local function GetDisplayGCDInfos(tt)
    gcdMS, cooldownMS, spellName, spellName, spellID, itemName, ItemLink = nil
    spellName, spellID = tt:GetSpell()
    itemName, ItemLink = tt:GetItem()
    if spellID ~= nil then
       cooldownMS, gcdMS = GetSpellBaseCooldown(spellID)
       print("ID:"..gcdMS)
    elseif itemName ~= nil then
       spellName, spellID = GetItemSpell(ItemLink)
       cooldownMS, gcdMS = GetSpellBaseCooldown(spellID)
       print("spell from item link:"..gcdMS)
    else
       -- MACRO WAS HERE
       spellName = _G[tt:GetName().."TextLeft"..1]:GetText()
       _,_,_,_,_,_,spellID = GetSpellInfo(spellName)
       cooldownMS, gcdMS = GetSpellBaseCooldown(spellID)
       print("spell with no ID:"..gcdMS)
    end
    gcdMS = round(gcdMS / 1000,2)
    gcdText = ""
    gcdText = "GCD "..gcdMS.."sec"
    tt:AddLine(gcdText,1,1,1)
end
 
TooltipDataProcessor.AddTooltipPostCall(Enum.TooltipDataType.Spell, GetDisplayGCDInfos)
TooltipDataProcessor.AddTooltipPostCall(Enum.TooltipDataType.Item, GetDisplayGCDInfos)

Only thing, how do I check "other" types? I mean, since onshow was global, it worked on macros with showtooltip in it (I marked the line in my code above). I can't find where there's a list of types in the patch changes?