Macromedia Flash

Macromedia Flash is a vector graphics based graphics animation program. The resulting files, sometimes called "flash files", may be included in a web page to view in a web browser, or they may be played on a standalone player.

Flash uses Anti-aliasing.

".fla" files are like the source code. They can be edited with Flash software. "fla" is pronounced "flaw".
".swf" files are completed, published files that cannot be edited. "swf" is pronounced "swiff".
Later versions of Flash can also create files in a variety of static or animated formats.

Pros and Cons

Advantages

The Macromedia Flash file format has several advantages over "regular" HTML pages that make it an extremely popular option for professional web site creation:

• Like PostScript and PDF, Flash allows exact specification of where the various page elements are, and so it gives the designer a great degree of control over how the user interface looks. It is much more difficult to do the same with HTML and CSS.
• Flash uses vector graphics; they may translate into small file sizes which take less bandwidth to transmit than bitmaps do.
• The Flash file format has been opened by Macromedia, and compatible third-party tools exist.
• Flash's file format isn't platform-dependent; players exist on Microsoft Windows, Mac OS, Linux and various UNIX systems.
• Flash allows the embedding of images ,sounds ,movies and simple HTML files. These abilities make it a good multimedia platform.
• Flash's embedded ActionScript language (an application of the ECMAScript programming language) allows the creation of simple fill-in-the-blank forms.

In FlashMX, the ActionScript language has been extended and can be used to create extensive event driven GUI's. Macromedia has stated their intention of moving Flash away from the simple animations of web ad banners and move toward true application development.

Disadvantages

There are also some disadvantages to Flash:

• Viewer plugins don't exist for all systems, and they're not installed on all computers that can run them.
• Though the flash file format is ostensibly "open", it is still controlled by Macromedia and not based upon a truly open standard such as SVG, which reduces the incentive for non-commercial software to support it. The Macromedia player can not be shipped as part of a pure open source operating system.
• Due to Flash's graphical nature, it doesn't degrade gracefully to disabled users. It is possible to overcome this only by providing alternative content (for example in HTML). See also accessibility[?].
• Flash doesn't support internationalization thoroughly.
• Flash demands significant CPU power to display, as it uses a very high degree of graphic abstraction that many video cards are not able to accelerate.
• The browser plug-in may store and retrieve information on the user's computer, acting much like HTTP cookies and with similar advantages and disadvantages.
• The plug-in has had security flaws which may open up a computer to remote attack (e.g., see [1] (http://www.macromedia.com/v1/handlers/index.cfm?ID=23569) and [2] (http://www.theregister.co.uk/content/55/28645.html) for a December 2002 problem).

In Flash MX, the latest release, several of the disadvantages have been addressed. See http://www.useit.com/alertbox/20001029.html for a discussion of Flash and usability.

Notable uses of Flash

• http://www.segway.com/flash/flash.html Interactive model of Segway HT
• http://www.homestarrunner.com/ Homestar Runner cartoons

See also:

• limited animation

External links

• Macromedia's page (http://www.macromedia.com)
• OpenSWF site (http://www.openswf.org)
• Ming, an open library for creating Flash files (http://www.opaque.net/ming)
• http://www.theregister.co.uk/content/56/23594.html Article on Flash and viruses
• Ultrashock Flash forums (http://forums.ultrashock.com/forums/index.php?referrerid=1322) great flash resource

Common misspelling and questions (FAQ)

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Hopper, before dark that evening, in conversation with Mr. store by the side entrance. He walked as rapidly as his legs would carry lamps were flickering, he arrived near Colonel Carvel's large double Tenth, his eyes lifted to the tall, curtained windows. Now and anon house, and beside Mr. Renault's, which was across from it. Eliphalet had discreet sometimes take chances. Towards the back of Mr. Renault's apparently used for the purpose of getting coal and wood into the cellar. and he dropped into the area. Although the evening was chill, at first Mr. Hopper perspired very above his head, and took no thought but of escape. At last, however, he Carvel's house--her house--was now ablaze with lights, and the shades not about the table; and the pantry, where the butler went occasionally; and streets was the sitting room. The straight figure of the Colonel passed the window, he stopped and flung away the paper. A graceful shadow he stooped to kiss her. Now they sat between the curtains, she on the themselves. But all at once a wagon backed and bumped against the.