TreeItem.index readonly property
Get the index of the TreeItem. The index is an integer value representing the numerical position of the TreeItem among all others in the Tree, starting from 1
.
Example
local ui = require "ui"
-- create a simple Window
local win = ui.Window("TreeItem.index sample", "fixed", 320, 250)
local tree = ui.Tree(win, {["Tab 1"] = {"SubItem1", "SubItem2"}, "Tab 2", "Tab 3"})
win:status()
tree:center()
function tree:onSelect(item)
win:status("TreeItem.index is "..item.index)
end
-- Launch Task to update user interface
ui.run(win):wait()