Windows 7 and Vista 3D provides a glassy appearance. Likewise known as Aero glass. Windows Aero is a GUI (graphical User Interface) first introduced by Windows Vista. Windows Aero remembers another Glass or translucent appearance for the windows. ... At the point when a window is limited, it will outwardly shrink to the taskbar, where it is shown to as a symbol.A UI is a technique by which the client and the PC trade data and guidelines. There are three types of user interface - order line, menu-driven and graphical UI (GUI).