Adobe have just recently released a beta version of an update to Flash Player 9 that adds new Full Screen capabilities to the Flash Player. This feature was primarily introduced into the update so that video players can go fullscreen, but it has lots of other uses aswell.
Full Screen mode is activated using either Actionscript 2 or Actionscript 3 by setting the value of a new property Stage.displayState, it can only be set in response to a mouse or keyboard event, which stops malicious use of this new feature. Keyboard events do not occur when the Flash Player is in full screen mode, so input fields will not work.
More information on fullscreen mode can be found here.
The new player also introduces some much needed displaylist events, namely ADDED_TO_STAGE and REMOVED_FROM_STAGE and the new player now works with Microsoft Vista.
Tags: as3, flashplayer