Tree:onContext() | LuaRT free and open source Windows programming framework for Lua

Tree:onContext(TreeItem) event

This event is fired when a right-click occured on the Tree.

Parameters

TreeItem

The TreeItem that was right-clicked, or nil if the right click occurred elsewhere than on an item in the Tree.

Return value

This event returns no value.

Example


local ui = require "ui"

-- creates a simple window
local win = ui.Window("Tree:onContext() event sample", 320, 260)
local tree = ui.Tree(win, {"Item1", "Item2", "Item3"}, 110, 40)

-- Tree:onContext event
function tree:onContext(item)
	-- show popup menu if onContext event occured on an item
	if item ~= nil then 
		local menu = ui.Menu("Delete TreeItem")
		menu.items[1].onClick = function (self)
			item:remove()
		end
		win:popup(menu)
	end
end

win:show()

-- update window
while win.visible do
	ui.update()
end