Friends……i found a very good component which Customization the default Flex Tree component.This component simply add a checkbox on every tree item.The checkbox allows 3 states: selected, unselected, partially selected.Then you can control the state of checkbox nodes within the code.
To see the preview visit:http://www.sephiroth.it/test/flex/3/treecheckbox/index.html
Code download: http://www.sephiroth.it/file_detail.php?id=151
