用计时方法判断双击类

判断双击除了用getTimer外还有没有其它的方法，主要是用计时的方法。下面是代码：
以下是代码片段：
class devil.com.btn.original.DoubleClick { 
/** 
   Set up an Object to citing a object(btn or mc ) clicked 
*/ 
private var _clickedObject:Object; 
/** 
   Set up an ID  
*/ 
private var _ID:Number; 
/** 
   Set up a delay time  
  */ 
private var _delayTime:Number = 200; 
/** 
   Record counts obj is clicked 
*/ 
private var _count:Number = 0; 
/** 
   Chageing  _delayTime property 
  */ 
public function set delayTime(delay:Number):Void { 
  _delayTime = delay; 
} 
public function get delayTime():Number { 
  return _delayTime; 
} 
/** 
   Set up a instance 
*/ 
public function DoubleClick(delayTime:Number) { 
  this._delayTime = delayTime; 
} 
/** 
   When button or movieclip is clicked this click method is called 
*/ 
public function click(obj:Object) { 
  if (this._clickedObject == undefined) { 
   _clickedObject = obj; 
  } 
  if (_count == 0) { 
   //first click 
   timerStart(); 
   _count = 1; 
  } else { 
   this._clickedObject.onDoubleClick(); 
   //双击 
   _count = 0; 
  } 
} 
/** 
    Timer star 
*/ 
private function timerStart():Void { 
  clearInterval(_ID); 
  _ID = setInterval(this, "timerStop", _delayTime); 
} 
/** 
    Timer stop 
*/ 
private function timerStop():Void { 
  clearInterval(_ID); 
  if (_count == 1) { 
   _clickedObject.onClick(); 
   //单击 
   _count = 0; 
  } 
} 
}

 
下面是用法：
以下是代码片段：
import devil.com.btn.original.DoubleClick; 
var b:DoubleClick = new DoubleClick(200); 
b.onClick = function() { 
//单击要执行的函数 
trace("单击") 
}; 
b.onDoubleClick = function() { 
//单击要执行的函数 
trace("单击") 
}; 
b.onDoubleClick=function(){ 
//双击 
trace("双击") 
} 
b.onRelease=function (){ 
_root.a.click(this)}