为了可以在浏览器外的Silverlight里使用,它通过COM自动化提供Windows 7的相关特性。主要功能包括消息截获、传感器API、H.264视频编码、任务栏扩展、语音API以及对便携设备的访问。
Resource Page Description
While Silverlight 4 supports accessing COM automation components from elevated trust OOB applications, many Windows platform features are currently not available through COM automation. This makes them inaccessible to such Silverlight OOB apps. Native Extensions for Microsoft Silverlight(NESL) is an effort to incrementally build a library of components that expose select Windows 7 features through COM automation, making them easily available to Silverlight 4 OOB applications running with elevated trust. The current version of NESL provides access to Windows 7 features like Sensors, Portable Devices, Speech, Taskbar and more. NESL is made up of a set of COM automation based runtime libraries, Silverlight wrapper libraries usable from Silverlight 4 OOB applications, sample applications with source, API documentation, and a developer's guide.
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