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package
{
import flash.display.Sprite;
import flash.events.TimerEvent;
import flash.utils.Timer;
import flash.utils.getTimer;

public class TimerTest extends Sprite
{
// ¶¨ÒåÒ»¸ö¼ÆʱÆ÷
private var timer:Timer;
// ¼Ç¼ÉÏÒ»´Î¼ÆʱµÄʱ¼ä
private var prev:int;

public function TimerTest()
{
// ¼ÆʱÆ÷³õʼ»¯Îª20ºÁÃëÖ´ÐÐÒ»´Î£¬Ö´ÐÐ5´Îºó½áÊø
timer = new Timer(20, 5);
timer.addEventListener(TimerEvent.TIMER, onTimer);
timer.start();
// Æô¶¯¼ÆʱÆ÷ºó£¬¼Ç¼һϵ±Ç°Ê±¼ä
prev = getTimer();
}

private function onTimer(event:TimerEvent):void
{
// ¼ÆʱÆ÷Ö´ÐУ¬»ñÈ¡µ±Ç°Ê±¼ä
var t:int = getTimer();
// ´òÓ¡³öµ±Ç°Ê±¼äÓëÉÏÒ»´Î¼ÆʱµÄʱ¼ä¼ä¸ô
trace(t - prev);
// ¼Ç¼Ïµ±Ç°Ê±¼ä
prev = t;
}
}
}
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package
{
import flash.display.Sprite;
import flash.events.Event;
import flash.utils.getTimer;
// ÉèÖÃswfµÄ֡ƵµÄ25֡ÿÃë
[SWF(frameRate = 25)]
public class EnterFrameTest extends Sprite
{
// ¼Ç¼ÉÏÒ»´Î¼ÆʱµÄʱ¼ä
private var prev:int;

public function EnterFrameTest()
{
// ¼àÌýENTER_FRAMEʼþ
this.addEventListener(Event.ENTER_FRAME, onEnterFrame);
// ¼Ç¼µ±Ç°Ê±¼ä
prev = getTimer();
}

private function onEnterFra


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http://www.foxice.net/techinfo_nandboot1.asp
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