How to trap the alt keycode?

Hi all,
I am trying to catch the alt keycode, when I press the alt key in keyboard.I can get all key codes, but alt key is not working.I tryed like this
stage.addEventListener(KeybordEvent.KEY_DOWN, isdown)
function isdown(event){
trace( event.keyCode( ) )
I will get all keycode values traced, but alt is not working.
Any help on this. Thanks in advance.

I don't believe there is a keycode for the ALT key, but you can apparently determine whether or not it is active (Boolean) using theKeyboardEvent.altKey property. See the following in the help documentation.
http://www.adobe.com/livedocs/flash/9.0/ActionScriptLangRefV3/flash/events/KeyboardEvent.h tml

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user4587979 wrote:
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How to trap ALT key?

Hello guys!
After searching and investigating quite a lot, I am posting
my problem here in hope that God bless me with success
I am working on an eLearning course whereas client requied
the course to be keyboard accessible. He wants all the shortcuts
with Alt key combination.
I can trap the Alt key with the use of enterframe but that
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Thanks a lot for sparing your precisious time.

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