Few months back i made this post in Flex3, it was buggy and i figured later it may not be possible here with my logic.Then comes the Flex4, did anyone tell you Flex4 is awesome, yes it is.The same requirement where you want to show tooltips on comboBox List items on roolover can be achieved easily in Flex4.You may have to read about the new ItemRenderer Class and its architecture for better understanding the code and you can go figure your own requirement then.
And this is my first post on Flex4.Enjoy the post.
Posted by kumargandhi 
