Script OnEvent

Main Menu
WoW API Lua API FrameXML util Widget API Widget scripts XML schema Events CVars Macro commands Combat Log Escape sequences Hyperlinks API changes HOWTOs wowuidev

Fires when dispatching an event.

(self, event, ...)

Arguments

self

Frame - The registered widget.

event

string - Name of the event.

...

Variable arguments - The event payload, if any.

Details

• Requires Frame:RegisterEvent()

Examples

Handling several events using if, elseif, else, end:

local frame = CreateFrame("Frame")
frame:SetScript("OnEvent", function(__, event, arg1, arg2, arg3, arg4)
	if event == "PLAYER_LOGIN" then
		print("Logging on")
	elseif event == "PLAYER_REGEN_DISABLED" then
		print("Entering combat")
	elseif event == "PLAYER_REGEN_ENABLED" then
		print("Leaving combat")
	elseif event == "UNIT_SPELLCAST_SENT" and arg1 == "player" and arg4 == 1459 then
		print("Casting arcane intellect")
	end
end)
frame:RegisterEvent("PLAYER_LOGIN")
frame:RegisterEvent("PLAYER_REGEN_DISABLED")
frame:RegisterEvent("PLAYER_REGEN_ENABLED")
frame:RegisterEvent("UNIT_SPELLCAST_SENT")

Handling several events using a lookup table:

local frame = CreateFrame("Frame")

function frame:PLAYER_LOGIN()
	print("Logging on")
end

function frame:PLAYER_REGEN_DISABLED()
	print("Entering combat")
end

function frame:PLAYER_REGEN_ENABLED()
	print("Leaving combat")
end

function frame:UNIT_SPELLCAST_SENT(unitID, __, __, spellID)
	if (unitID == "player" and spellID == 1459) then
		print("Casting arcane intellect")
    end
end

frame:SetScript("OnEvent", function(self, event, ...)
	self[event](self, ...)
end)

frame:RegisterEvent("PLAYER_LOGIN")
frame:RegisterEvent("PLAYER_REGEN_DISABLED")
frame:RegisterEvent("PLAYER_REGEN_ENABLED")
frame:RegisterEvent("UNIT_SPELLCAST_SENT")