Canvas.y | LuaRT free and open source Windows programming framework for Lua

Canvas.y read/write property

Get or set the Canvas vertical position. The vertical position start from 0 (top side of the parent widget) and increase to the bottom side of the parent widget.

Example


local ui = require "ui"
require "canvas"

-- create a simple window
local win = ui.Window("canvas.y sample", 600, 300)
local canvas = ui.Canvas(win, 140, 0)
ui.run(win)

async(function()
    while win.visible and (canvas.y < 282) do
        canvas.y = canvas.y + 2
        canvas:begin()
        canvas:clear(math.random(0xFFFFFFFF))
        canvas:flip()
        sleep(5)
        win:status("y = "..canvas.y)
    end
    sys.exit()
end)

waitall()