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UIHANDLER OnClick

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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 Edit

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.

ExampleEdit

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:

<Button name="foo" ...>
  ...
  <Scripts>
    ...
   <OnClick>self:SetText("You clicked with " .. button);</OnClick>
  </Scripts>
 </Button>

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