UIHANDLER OnClick

The OnClick handler is called when a UI widget that supports clicking (i.e. is derived from a Button) is clicked. Region derivatives like Frame only implement OnMouseDown / OnMouseUp handlers.

Arguments

 * self : widget being clicked
 * button : [mouse] button used to click the widget. Due to widget:Click(button, down), button argument may be anything, although the following five values are common for normal mouse clicks: "LeftButton", "RightButton", "MiddleButton", "Button4", "Button5".
 * down : Boolean - 1 (true) if the trigger button is currently being held down, nil (false) otherwise.

Example
local taunts = {"I'm a button.", "Quit clicking me.", "That's enough.", "Stop it!", "I'm leaving!"}; local widget = CreateFrame("Button", "TauntingButton", UIParent, "UIPanelButtonTemplate"); widget:SetWidth(200); widget:SetHeight(24); widget:SetPoint("CENTER"); widget:RegisterForClicks("AnyUp"); widget:SetScript("OnClick", function (self, button, down) self:SetID((self:GetID or 1) + 1);  if taunts[self:GetID] then   self:SetText(taunts[self:GetID]);  else   self:Hide;  end end);

The named arguments are also available in XML handlers:  ...   ...   self:SetText("You clicked with " .. button);  