How to create a widget button in Corona SDK

Creating a widget button in corona, with a button press effect and a function call is as simple as below:


-- First, require 'widget' --
local widget = require("widget")

-- Create the button --
local myButton = widget.newButton{
    default = "normalImage.png",
    over = "pressedImage.png",
    width = 200, height = 200,
    onRelease = myButtonClickFunction
}

-- Position the button --
myButton.x = display.contentWidth/2
myButton.y = display.contentHeight/2

-- Then create the function you need to trigger on the button press --

function myButtonClickFunction()
    print("myButton is pressed...")
end