Maintenance script: UI Lua API import (WAR 1.4.8)

2026-10-16T19:51:40Z

UI Lua API import (WAR 1.4.8)

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{{LuaApi|group=Window|wrapper=interfacecore/source/windowstate.lua}}
Returns whether a window is set to be shown.

<pre>
showing = WindowGetShowing(windowName)
</pre>

== Arguments ==
;windowName : <code>string</code> – Name of the window.

== Returns ==
;showing : <code>boolean</code> – <code>true</code> if the window's showing flag is set.

== Details ==
* This reports the window's own showing flag. Its parents' flags are not checked.
* The client registers the C function as <code>_WindowGetShowing</code>. The <code>WindowGetShowing</code> that addons call is a Lua function defined in <code>interfacecore/source/windowstate.lua</code>:
** If the global table named after the window (<code>_G[windowName]</code>) has a <code>STATE</code> table, it returns <code>STATE.SHOWING</code> without calling into the client.
** Otherwise it calls <code>_WindowGetShowing(windowName)</code>.
* For windows with state tracking enabled, the client writes the new value to <code>''windowName''.STATE.SHOWING</code> whenever the showing flag changes, for example through [[API:WindowSetShowing|WindowSetShowing]].
* If an addon creates a global table with the same name as a window and gives it a <code>STATE</code> field, <code>WindowGetShowing</code> returns whatever that field holds. Avoid using <code>STATE</code> as a field name on window tables.

== Errors ==
* <code>Error in function call 'WindowGetShowing': Window %s does not exist</code> (from <code>_WindowGetShowing</code>)

== Example ==
From <code>easystem_eventtext/source/system_eventtext.lua</code>:
<pre>
if( DoesWindowExist( "LoadingWindow" ) and WindowGetShowing( "LoadingWindow" ) ) then
-- the loading screen is up
end
</pre>

== See also ==
* [[API:WindowSetShowing|WindowSetShowing]]
* [[API:DoesWindowExist|DoesWindowExist]]

API:WindowGetShowing - Revision history

Maintenance script: UI Lua API import (WAR 1.4.8)