Maintenance script: UI Lua API import (WAR 1.4.8)

2026-10-16T19:40:06Z

UI Lua API import (WAR 1.4.8)

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{{LuaApi|group=ActionButtonGroup}}
Sets how many rows and columns of buttons an ActionButtonGroup has.

<pre>
ActionButtonGroupSetNumButtons(groupName, numRows, numCols)
</pre>

== Arguments ==
;groupName : <code>string</code> – Name of an ActionButtonGroup window.
;numRows : <code>number</code> – Number of rows. Fractions are dropped.
;numCols : <code>number</code> – Number of columns. Fractions are dropped.

== Returns ==
Nothing.

== Details ==
* The group then has <code>numRows × numCols</code> buttons, numbered from 1.
* If the total number of buttons changes, the button list is rebuilt.
* The group window is resized to fit the grid: the buttons plus the spacing between them. With 0 buttons its size becomes 0 by 0.

== Errors ==
* <code>Error in function call 'ActionButtonGroupSetNumButtons': Window %s does not exist</code>
* <code>Error in function call 'ActionButtonGroupSetNumButtons': Window %s is not a ActionButtonGroup</code>

== Example ==
From <code>ea_backpackwindow/source/backpackiconview.lua</code>:
<pre>
local totalSlots = pocketData.lastSlotID - pocketData.firstSlotID
local numRows = math.ceil( totalSlots/EA_Window_Backpack.NUM_SLOTS_WIDE )
local numCols = EA_Window_Backpack.NUM_SLOTS_WIDE

ActionButtonGroupSetNumButtons( pocketWindowName.."Buttons", numRows, numCols )
</pre>

== See also ==
* [[API:ActionButtonGroupSetIcon|ActionButtonGroupSetIcon]]

API:ActionButtonGroupSetNumButtons - Revision history

Maintenance script: UI Lua API import (WAR 1.4.8)