title: Getting touch events when objects have an alpha of 0 In Corona SDK
body: <p>If I wanted to have an invisible box, for example, how could I get touch events if it has an alpha of 0? Or is there another way to make an invisible box.</p>
  
  <pre><code>local function invisiblebuttontouch(event)
      if event.phase == 'began' then
          print (event.x..","..event.y)
      end
  end
  
  button = display.newRect(1,1,300,300)
  button:addEventListener("touch",invisiblebuttontouch)
  button.alpha = 0
  </code></pre>
  
  <p>It never prints out the x and y, however if I don't set the alpha to 0, then it works fine.</p>