Firefox UI Library

What library does Firefox use for its user interface an开发者_运维百科d can you use it in other applications?

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XUL

http://www.mozilla.org/projects/xul/

and

http://en.wikipedia.org/wiki/XUL

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Firefox uses XUL to define its user interface, and renders it using Gecko.

Since Gecko is open, you can very much use it to render your application, though I don't know how simple such an interface would be to implement.

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XUL