How can I set the window type of a WindowedApplication to be lightweight in Flex

How to do it using spark? Because it says it can't find "w开发者_开发技巧indow".

(similar)

Window is an AIR only class.

http://livedocs.adobe.com/flex/3/langref/mx/core/Window.html

http://docs.huihoo.com/flex/4/spark/components/Window.html

So, the way you do this in Flex 4 is the exact same way you do it in Flex 3; but you'll have to be developing an AIR application not a browser based application.

If you were more specific issues; please expand and perhaps share some code.