Getting started with a simple Flex verification code case _flex

Just wrote a simple flex verification mechanism, provided for everyone to download, only to do a good job.
[Flex Verification Code Verification Mechanism source code DOWNLOAD]
The first step is to build a project. Named Validcode
Validcode.mxml
<?xml version= "1.0" encoding= "Utf-8"?>
xmlns:mx= "Http://www.adobe.com/2006/mxml" layout= "absolute" width= "<mx:application" height= ">"
<mx:Script>
<! [cdata[
private var Bisup:boolean = false;
Private Function Doclickup (): void {
Bisup = true;
}
Private Function Doclickdown (): void {
if (bisup) externalinterface.call ("suc", "verify success [www.dc9.cn]");
}
]]>
</mx:Script>
<mx:label x= "0" y= "0" text= "Please first hit this" Width= "height=", "" fontsize= "and" click= "doclickup ()/>
<mx:label x= "" "Y=" text= "and then hit this" Width= "" height= "" "Fontsize=" "" Click= "" Doclickdown () "/>
</mx:Application>
Step two, add in the script inside the index.template.html
function suc (str) {
alert (str);
}
Test Presentation page
This is just a call to alert, and real validation can invoke an Ajax using Shareobject,
or with Httpservice or urlrequest, you can, Flex is very powerful oh.