List.count readonly property


Get the current items count in the List.

Example

local ui = require "ui" -- create a simple Window local win = ui.Window("List.count sample", "fixed", 360, 170) local label = ui.Label(win, "New item :", 30, 30) local entry = ui.Entry(win, "", label.x+label.width+6, label.y-4) local button = ui.Button(win, "Add item", entry.x+entry.width+6, label.y-6) local list = ui.List(win, {}, button.x+button.width+6, label.y-4) function button:onClick() -- add new item in the List adn select it list.selected = list:add(entry.text) entry.text = "" win:status("List.count = "..list.count) end -- enable button only if entry.text is not empty function entry:onChange() button.enabled = #entry.text > 0 end entry.onSelect = button.onClick entry:onChange() win:status("List.count = 0") win:show() -- update user interface repeat ui.update() until not win.visible