App with transparent background fo MAC Desktop

I have a very simple app that I want to appear within a window with a transparent background. Your job will be to provide the code for the transparency, not the full app code. More details in the attached file - please read this before bidding. ## Deliverables Hi I am creating a small, simple app for MAC OSX 10+ desktop. I want the border area on the enclosed picture to be transparent, i.e. so it just looks like the post it on the desktop, no window border or menus and a transparent window background. However, when the user clicks anywhere on the picture, i want the window border and menu bar to re appear. You can code in xcode or Realbasic - I'm not bothered which as long as it works. An compiled example (you can put your own watermark on if you wish) in your bid would greatly increase chance of winning bid. Regards, Ian Patterson