初识AS3（九）——鼠标单、双击与遮…

[知识点]
1、遮罩用mask。如A去遮罩B，语句为A.mask=B；取消语句为A.mask=null。
2、双击语句为DOUBLE_CLICK，在舞台上响应双击事件要事先加上如下语句：
stage.doubleClickEnabled=true;
stage.mouseChildren=false;
[效果]

单双击带遮罩.swf
(2008-11-27 22:47:07, Size: 867 B , Downloads: 3)

[代码]

CODE:


var url:String = "http://qzgzs.51.net/temp/images/d4.jpg";
var loader:Loader = new Loader();
var dizhi:URLRequest = new URLRequest(url);
loader.load(dizhi);
addChild(loader);
var zhezhao:Sprite = new Sprite();
zhezhao.graphics.beginFill(0xFF0000);
zhezhao.graphics.drawCircle(0, 0, 50);
addChild(zhezhao);
zhezhao.x=zhezhao.y=50;
zhezhao.alpha=0.5;
Mouse.hide();
stage.addEventListener(MouseEvent.MOUSE_MOVE,yd);//移动
stage.addEventListener(MouseEvent.CLICK, dj);//单击
stage.addEventListener(MouseEvent.MOUSE_DOWN, ax);//按下
stage.addEventListener(MouseEvent.DOUBLE_CLICK, xj);//双击
stage.doubleClickEnabled=true;
stage.mouseChildren=false;
function yd(event:MouseEvent):void {
zhezhao.x=mouseX;
zhezhao.y=mouseY;
}
function ax(event:MouseEvent):void {
Mouse.hide();
}
function xj(event:MouseEvent):void {
loader.mask =null;
}
function dj(event:MouseEvent):void {
loader.mask = zhezhao;
}