XUL From Wikipedia, the free encyclopedia Jump to: navigation, search XML User Interface Language (XUL) File extension: .xul MIME type: application/vnd.mozilla.xul+xml Developed by: Mozilla Foundation Type of format: markup language XUL (pronounced zool ([zu:l])), the XML User Interface Language, is an XML user interface markup language developed by the Mozilla project for use in its cross-platform applications, such as Firefox. The only complete implementation of XUL is the Gecko layout engine. XUL relies on multiple existing web standards and technologies, including CSS, JavaScript, and DOM, which makes it relatively easy to learn for people with a background in web programming and design. XUL and web developer documentation is available from the Mozilla Developer Center [1]. XUL has no formal specification or interoperable non-Gecko implementations and therefore may be described as an internal or proprietary language. On the other hand, its implementation (Gecko) is open source and Mozilla provides experimental XULRunner builds to let developers build their applications on top of the Mozilla application framework and XUL in particular. The main benefit of XUL is that it provides a simple and portable definition of common widgets. This reduces the software development effort in a way analogous to the savings offered by 4GL tools. For more information, refer to the Joy of XUL article on developer.mozilla.org. Other user interface markup languages are MXML, Laszlo XML, UIML, and XAML. -- 夫兵者不祥之器物或恶之故有道者不处君子居则贵左用兵则贵右兵者不祥之器非君子 之器不得已而用之恬淡为上胜而不美而美之者是乐杀人夫乐杀人者则不可得志於天下 矣吉事尚左凶事尚右偏将军居左上将军居右言以丧礼处之杀人之众以哀悲泣之战胜以 丧礼处之道常无名朴虽小天下莫能臣侯王若能守之万物将自宾天地相合以降甘露民莫 之令而自均始制有名名亦既有夫亦将知止知止 61-224-53-109.dynamic.hinet.net海