actionscript 3 - Action Script. How to disable keyboard? -

how disable keyboard keys in action script?

i'm creating flash "memory" game, idea discover 2 equal cards. when 2nd card discovered shown 750 milliseconds, in time player can't actions. when use mousechildren = false; player can't click mouse time, can use keyboard arrows/enter/space/tab buttons... need disable time.

here part of code:

            {                     trace("wrong");                     _message = "wrong";                     message_txt.text = _message;                      _secondcard = event.currenttarget;                       var timer:timer = new timer(750, 1);                     timer.addeventlistener(timerevent.timer_complete, flipback);                     timer.start();                  stage.addeventlistener(keyboardevent.key_down, blindkeyboard);//added here                 stage.addeventlistener(keyboardevent.key_up, blindkeyboard);//added here                       mousechildren = false;                   }             }  function blindkeyboard(e:keyboardevent):void{ //added here function     e.preventdefault();     e.stoppropagation(); }              protected function flipback(event:timerevent):void     {         _firstcard.gotoandplay("flipback");         _secondcard.gotoandplay("flipback");         _firstcard.addeventlistener(mouseevent.click, checkcards);         _secondcard.addeventlistener(mouseevent.click, checkcards);         _firstcard = _secondcard = undefined;          mousechildren = true;     } 

you have functions adding/removing listeners :

function addlisteners():void {     // loop through , add listeners cards     // add keyboard listeners }  function removelisteners():void {    // loop through , remove listeners cards    // remove keyboard listeners } 

before set timer, remove listeners :

removelisteners(); 

then in flipback timer handler call addlisteners :

addlisteners();