How to develop a drop-down menu in Flex 3?

Question

如何在Flex 3中开发下拉菜单？

Answer 1

Take a look at:

Menu control & Defining menu structure and data

UPDATED:

just change:

<mx:Button id="myButton" 
        label="Open Menu" 
        click="createAndShow();"/>

to

<mx:Button id="myButton" 
        label="Open Menu" 
        mouseOver="createAndShow();"/>

Answer 2

已有一个： http ： //livedocs.adobe.com/flex/3/html/help.html?content=dpcontrols_5.html