The button.visible property is also affected by the Button:show() and Button:hide() methods.
Button.visible read/write property
Get or set the button visibility on screen, a true value means that the Button is shown, a false value means that the Button is hidden.
Example
local ui = require "ui"
-- create a simple button
local win = ui.Window("Button.visible sample", 320, 200)
local button = ui.Button(win, "Try to click !", 120, 70)
-- hides the button when mouse cursor hovers it
function button:onHover()
self:hide()
end
win:show()
-- update the user interface until the user closes the button
repeat
ui.update()
until not win.visible