全屏切换 stage.displayState = (stage.displayState == StageDisplayState.NORMAL?StageDisplayState.FULL_SCREEN:StageDisplayState.NORMAL); 全屏事件监听 在全屏时,FLASH PLAYER内部应该会优先截获ESC键的,下面的代码无效 addEventListener(KeyboardEvent.KEY_DOWN, escFun); private function escFun(e:KeyboardEvent):void { if(e.keycode == Keyboard.ESCAPE) { //do it by yourself } } 应该监听全屏切换事件 stage.addEventListener(FullScreenEvent.FULL_SCREEN ,fullScreenHandler); ...... private function fullScreenHandler(event:FullScreenEvent):void { if (event.fullScreen) { //全屏状态 }else { //非全屏状态 } }