2010-03-10 11:15
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今天为一个窗口写了个方法，大概意思是让target可以拖动ZSWindow，另外当鼠标移动到target上时，会有个十字拖动符号替换系统鼠标手势。可是我按下面做了后，发现changeMouseMark，stopMouseMark，dragWindow会不停地自动执行，然后鼠标也在那一直闪个不停。不知道为什么。 |
代码
1 public class ZSWindow extends Sprite
2 {
3
4 public function ZSWindow(id:String){
5 super();
6 }
7
8 public function setMovetarget(target:DisplayObject):void{
9 if(mouseMark==null){
10 mouseMark = new DragMouse();
11 mouseMark.visible = false;
12 addChild(mouseMark);
13 }
14 moveTarget = target;
15 moveTarget.addEventListener(MouseEvent.MOUSE_OVER,changeMouseMark);
16 moveTarget.addEventListener(MouseEvent.MOUSE_DOWN,dragWindow);
17 moveTarget.addEventListener(MouseEvent.MOUSE_OUT,stopMouseMark);
18 }
19
20 private function dragWindow(event:MouseEvent):void{
21 stage.addEventListener(MouseEvent.MOUSE_UP,stopDragWinddow);
22 startDrag(false,new Rectangle(-_width+35,-_height+35,stage.stageWidth+_width- 70,stage.stageHeight+_height-70));
23 event.updateAfterEvent();
24 }
25
26 private function stopDragWinddow(event:MouseEvent):void{
27 stopDrag();
28 stage.removeEventListener(MouseEvent.MOUSE_UP,stopDragWinddow);
29 }
30
31 private function changeMouseMark(event:MouseEvent):void{
32 Mouse.hide();
33 if(mouseMark.visible==false){
34 mouseMark.visible = true;
35 }
36 stage.addEventListener(MouseEvent.MOUSE_MOVE,changeMousePosition);
37 }
38
39 private function changeMousePosition(event:MouseEvent):void{
40 mouseMark.x = mouseX;
41 mouseMark.y = mouseY;
42 setChildIndex(mouseMark,numChildren-1);
43 event.updateAfterEvent();
44 }
45
46 private function stopMouseMark(event:MouseEvent):void{
47 Mouse.show();
48 if(mouseMark&&mouseMark.visible){
49 mouseMark.visible = false;
50 }
51 if(stage){
52 stage.removeEventListener(MouseEvent.MOUSE_MOVE,changeMousePosition);
53 }
54 }
55
56 }
57
58
1 package com.zs.panel.com
2 {
3 import flash.display.Bitmap;
4
5 [Embed(source="com/assets/images/drag2.png")]
6 public class DragMouse extends Bitmap
7 {
8 public function DragMouse()
9 {
10 super();
11 }
12 }
13 }
后来到天地会问了下，然后我在上面代码加上了mouseMark.mouseEnabled = false;之后就不闪烁了。
问题所在：当我鼠标移动到moveTarget 上时，按理来说应该是系统鼠标手势被隐藏，替换的鼠标手势出现。但是，由于用来替换的鼠标手势的图片也能接收鼠标事件，moveTarget 就会执行moveTarget.addEventListener(MouseEvent.MOUSE_OUT,stopMouseMark);之后mouseMark被隐藏，鼠标焦点回到了moveTarget 上，之后mouseMark又出现，于是就闪烁不停。
说明：mouseEnabled 属性可以使物件不再接收鼠标事件，mouseChildren属性可以使子项也不再接收鼠标事件。收益了！再次感谢！