The file that contains the Windows Aero theme for Windows Vista and Windows 7., Windows Aero is the graphical user interface and the default theme in most editions of Windows Vista and Windows 7, operating systems released by Microsoft. It is also available in Windows Server 2008, but is not enabled by default. Its name is a backronym for Authentic, Energetic, Reflective and Open. Intended to be a cleaner, more powerful, more efficient and more aesthetically pleasing user interface than the previously used theme (Luna), it includes new translucency, live thumbnails, live icons, animations and eye candy. Aero also encompasses a set of user interface design guidelines for Microsoft Windows.
History

Like Windows XP, Aero’s base icons were designed by The Iconfactory.

Until the release of Windows Vista Beta 1 in July 2005, little had been shown of Aero in public or leaked builds. Previous user interfaces were Plex, which was featured in Longhorn builds 3663-4048; Slate, which was featured in build 4042 and was available until build 4094; and Jade (builds 4074, 4083 and 4093, actually an early preview of Aero). Microsoft started using Aero in public builds in build 5048. The first build with full-featured Aero was build 5219. Build 5270 (released in December 2005) contained an implementation of Aero which was virtually complete, according to sources at Microsoft, though a number of stylistic changes were introduced between then and the operating system’s release.

Originally, Aero was to have three levels available, one code-named “To Go”, which had the Desktop Window Manager (DWM) composition engine (previously known as DCE) disabled. The next was to be AeroExpress, lacking many features of the highest level code-named Aero Glass. However, in December 2005, Microsoft announced that there would only be two levels available, “Windows Vista Aero” and “Windows Vista Basic”, with the previous “Express” level integrated into the new “Windows Vista Aero” level. A control panel was added to enable the user to fine tune this functionality, such as being able to turn off the “glass” translucency effect. These levels are provided so that the Aero interface (to some extent) can be used with a relatively low-end graphics card.
Windows 7
Aero Peek showing the desktop.

Windows Aero is revised in Windows 7, with several UI changes, a more touch-friendly UI and many new visual effects and features:

* Aero Peek – hovering over a taskbar icon shows the thumbnail of that program. Hovering over the thumbnail shows a preview of that program in full view. Aero Peek also refers to the “Show desktop” button to the far right of the new taskbar.
* Aero Shake – Shaking (quickly dragging back and forth) a window minimizes all other windows. Shaking it again brings them back.
* Aero Snap – Clicking and dragging a window to the right or left side of the desktop causes the window to fill the respective half of the screen. Snapping a window to the top of the desktop maximizes it. Resizing a window to touch the top or bottom edge of the screen maximizes the window to full height, whilst retaining its width; these windows will then slide horizontally if moved by the title bar, or can be pulled off, which returns the window to its original height.
* Jump List – Right clicking on or clicking and dragging upwards an icon on the taskbar enables several options, including pinning and displaying recent documents. Program-specific options such as opening a new window in a browser, are included.
* Touch UI – Windows Aero was revised to be more touch-friendly.[citation needed] For example, the title bar buttons are now slightly bigger.
* Maximized windows remain glass instead of becoming opaque.
* When hovering over the taskbar button for a running program, the button glows the dominant RGB color of its icon. Also, a shiny effect follows the mouse as it moves across the icon of active programs.
* When moving windows, the CPU and GPU load is reduced by limiting the frame rate that the Aero part is rendered in order to provide better performance to applications and programs.
* The blur effect in Aero on Windows 7 now has more even blending than Aero in Windows Vista.
* It is now possible to turn off window shadows.
* The cyan outline on the right and bottom side of focused windows has been changed to white in Windows 7.
* Progress bars now can be used in the program’s taskbar buttons. For example, if one were to copy a file in Explorer, and then go to Solitaire, the Explorer taskbar button will fill up green as the copy progresses.
User interface
Windows Aero Glass Effects
The Open Dialog in Windows Vista demonstrates some of the new aesthetic and functional aspects of Aero.
The Connect to the Internet Wizard.
Windows Flip 3D ? Win+Tab ?
Windows 7 Flip 3D ? Win+Tab ?
Live Thumbnails ? Win+T
Windows 7′s Live Thumbnails (hovering over the icon)

For the first time since the release of Windows 95, Microsoft has completely revised its user interface guidelines, covering aesthetics, common controls such as buttons and radio buttons, task dialogs, wizards, common dialogs, control panels, icons, fonts, user notifications, and the “tone” of text used.
Aero Wizards

Wizard 97 had been the prevailing standard for wizard design, visual layout, and functionality used in Windows 98 through to Windows Server 2003, as well as most Microsoft products in that time frame. Aero Wizards are the replacement for Wizard 97, incorporating visual updates to match the aesthetics of the rest of Aero, as well as changing the interaction flow.

More specifically:

* To increase the efficiency of the wizard, The “Welcome” pages in Wizard 97 are no longer used. (A precursor to this change was implied in a number of wizards in products such as SQL Server 2005 where a check-box was added to welcome pages, allowing a user to disable the welcome page in future uses of the wizard.)
* Aero Wizards can be resized, whereas the Wizard 97 guidelines defined exact sizes for wizard window and content sizes.
* The purpose of any given Aero Wizard page is more clearly stated at the top.
* A new kind of control called a “Command link” provides a single-click operation to choose from a short list of options.
* The notion of “Commit pages” is introduced, where it is made clear that the next step will be the actual process that the wizard is being used to enact. If no follow-up information needs to be communicated, these are the last pages in a wizard. Typically a commit page has a button at the bottom-right that is labeled with the action to be taken, such as “Create account”.
* The “Back” button has moved to the top-left corner of the wizard window and matches the visual style of the back button in other Vista applications. This is done to give more focus to the commit choices. The “Next” button is only shown on pages where it is necessary.
* At the end of a wizard, a “Follow-up page” can be used to direct the user to related tasks that they may be interested in immediately after completing the wizard. For example, a follow-up for a CD burning wizard may present options like “Duplicate this disk” and “Make a disk label”.

Notifications

Notifications allow an application or operating system component with an icon in the notification area to create a pop-up window with some information about an event or problem. These windows, first introduced in Windows 2000 and known colloquially as “balloons”, are similar in appearance to the speech balloons that are commonly seen in comics. Balloons were often criticized in prior versions of Windows due to their intrusiveness, especially with regard to how they interacted with full-screen applications such as games (the entire application was minimized as the bubble came up). Notifications in Aero aim to be less intrusive by gradually fading in and out, and not appearing at all if a full-screen application or screensaver is being displayed

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