规格：
FindMovieClip(StartToSearchMovie:MovieClip, WantToSearchMovieName:String)
StartToSearchMovie：从哪个影片实体开始找起，通常是 _root。
WantToSearchMovieName：你想寻找影片实体的名称。
用途：
使用名称搜寻影片实体。
使用名称来搜寻影片实体有个好处，就是当你想要 reference 影片实体时不用去指明阶层关系。
实例：
var tgm:MovieClip = FindMovieClip(_root, "MyMovie");
源码：
代码:
function FindMovieClip (oStart : MovieClip, sName : String, tmpArray : Array) : MovieClip
{
var rtMovie : MovieClip = null;
var tmpMovie : MovieClip = null;
var mclips;
if (tmpArray == undefined) tmpArray = new Array ();
for (mclips in oStart)
{
var oMovie_mc = oStart [mclips];
if (oMovie_mc instanceof MovieClip)
{
tmpMovie = IsInArray (oMovie_mc._name, tmpArray);
if (tmpMovie == null)
{
tmpArray.push (oMovie_mc);
if (oMovie_mc._name == sName)
{
rtMovie = oMovie_mc;
break;
} else
{
rtMovie = FindMovieClip (oMovie_mc, sName, tmpArray);
if (rtMovie != null) break;
}
}
}
}
return rtMovie;
}
function IsInArray (movieName : String, tmpArray : Array) : MovieClip
{
var i : Number = 0;
var tmpMovie : MovieClip = null;
var rtMovie : MovieClip = null;
for (i = 0; i < tmpArray.length; i ++)
{
tmpMovie = tmpArray [i];
if (tmpMovie._name == movieName) rtMovie = tmpMovie;
}
return rtMovie;
}