icon in the system tray.
ShowDT is controlled from the icon in the system tray.
A single Left Click on the ShowDT system tray icon will minimize all windows and reveal the desktop.
A single Left Click on the ShowDT system tray icon while holding down the SHIFT key will restore all windows to their position before being minimized.
A single Right Click on the icon will display the Show DT menu, from where the user can choose to
