Tree.style | LuaRT free and open source Windows programming framework for Lua

Tree.style read/write property

Get or set the current style, a string value, that specifies the Tree appearance :

"text" : Tree will display only text items (default).
"icons" : Tree will display text items with their icons, using TreeItem:loadicon().

When setting the style property from "icons" to "text" all previously loaded icons are preserved.

Example


local ui = require "ui"

-- create a simple Window 
local win = ui.Window("tree.style sample", "fixed", 280, 240)
local label = ui.Label(win, "DoubleClick on an application :", 10, 30)
local tree = ui.Tree(win, {}, label.x, label.y+20, 180, 160)
local checkicons = ui.Checkbox(win, "Show icons", tree.x+tree.width+12, label.y)

local applications = {
	Notepad = "c:\\Windows\\notepad.exe",
	Console = 'c:\\Windows\\System32\\cmd.exe'
}

-- fill the Tree with items
for app, path in pairs(applications) do 
	tree.selected = tree:add(app)
  tree.selected:loadicon(path)
end

function tree:onDoubleClick(item)
	sys.cmd("start "..applications[item.text])
end

function checkicons:onClick()
	tree.style = self.checked and "icons" or "text"
	win:status("Tree style : "..tree.style:capitalize())
end

checkicons:onClick()
win:show()

repeat
	ui.update()
until not win.visible