Alert组件简介

文章关键字：|Alert|组件|提示框|按钮|窗口|对话框|

Alert.show(content,title,flags,parent,closeHandle,iconClass,defaultButtonFlag);

Content：提示内容

title：提示框标题

flags：指定出现的按钮。选值有：

0--OK按钮；
1--Yes按钮；
2--No按钮；
3--Yes,No按钮组；
4--OK按钮；
5--OK,Yes按钮组；
6--OK,No按钮组；
7--OK,YES,NO按钮组；
8--Cancel按钮；
9--YES,CANCEL按钮组；
10--NO,CANCEL按钮组；
11--YES,NO,CANCEL；
12--NO,CANCEL按钮组；
13--NO,YES,CANCEL按钮组；
14--OK,NO,CANCEL按钮组；
15--OK,NO,YES,CANCEL按钮组。
到16以后又回到0开始，即16=0，17=1等等

//你可以通过逻辑符合"|"随意组合，组合后默认排列，与你自定义的顺序无关。如：1|2|8显示是为:YES按钮，NO按钮，Cancel按钮

parent：对话框居中的参照对象。一般指定this,即当前窗口。

iconClass：给对话框指定图标。

defaultButtonFlag：指定默认被选中的按钮。当按下回车相当于该按钮的点击事件出发。

【官方源码】

<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the Alert control. -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">

<mx:Script>
<![CDATA[
import mx.controls.Alert;
import mx.events.CloseEvent;

// Event handler function uses a static method to show
// a pop-up window with the title, message, and requested buttons.
private function clickHandler(event:Event):void {
Alert.show("Do you want to save your changes?", "Save Changes",3, this, alertClickHandler);
}

// Event handler function for displaying the selected Alert button.
private function alertClickHandler(event:CloseEvent):void {
if (event.detail==Alert.YES)
status.text="You answered Yes";
else
status.text="You answered No";
}

// Event handler function changes the default Button labels and sets the
// Button widths. If you later use an Alert with the default Buttons,
// you must reset these values.
private function secondClickHandler(event:Event):void {
Alert.buttonWidth = 100;
Alert.yesLabel = "Magenta";
Alert.noLabel = "Blue";
Alert.cancelLabel = "Green";

Alert.show("Select a color:","Color Selection",1|2|8,this);

// Set the labels back to normal:
Alert.yesLabel = "Yes";
Alert.noLabel = "No";
}
]]>
</mx:Script>

<mx:Panel title="Alert Control Example" width="75%" horizontalAlign="center" paddingTop="10">
<mx:Text width="100%" color="blue" textAlign="center"
text="Click the button below to display a simple Alert window."/>
<mx:Button label="Click Me" click="Alert.show('Hello World!', 'Message');"/>

<mx:Text width="100%" color="blue" textAlign="center"
text="Click the button below to display an Alert window and capture the button pressed by the user."/>
<mx:Button label="Click Me" click="clickHandler(event);"/>
<mx:Label id="status" fontWeight="bold"/>

<mx:Text width="100%" color="blue" textAlign="center"
text="Click the button below to display an Alert window that uses custom Button labels."/>
<mx:Button label="Click Me" click="secondClickHandler(event);"/>
</mx:Panel>

</mx:Application>

原文地址：http://www.evget.com/zh-CN/Info/ReadInfo.aspx?id=9193