Picture.y read/write property
Get or set the Picture 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"
-- create a simple window
local win = ui.Window("Picture.y sample", 340, 600)
local picture = ui.Picture(win, "examples/LuaRT.png", -76, 10)
-- shows the window
win:show()
-- update user interface and increase Picture horizontal position
repeat
ui.update()
picture.y = picture.y + 1
until not win.visible or (picture.y > 600)