I’ve decided to both update the sample on the original post, and explain the error in a new post for those that have already downloaded the example. Turns out it’s actually something to remember.

In today’s post Flex 2.0 Tree control with Spring Loaded Folders there was a nasty framework bug. The bug only happens sometimes so it was not detected right away. None the less it is a show stopper for those wishing to use the technique on the tree control.

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Although the techniques described here can be applied in other ways, and on other components; one of the most practical is the tree control.

When dragging items in a Flex application the user is mouse blocked. The left mouse button is used to initiate, and keep alive the drag operation. The tree control being comprised of folders and items posses a particular problem. If the user wishes to drag the items into a closed folder, the user would have to first open the desired destination folder, then perform the drag operation. 

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A couple of people over on Flexcoders have expressed interest in customizing the Flex divider box. As this is something I happened to have played with, I thought I would share it. Styled gradient fill, close and open state button, border colors, and a couple of other goodies.

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Adobe has released the latest and greatest version of the Flex product line. There are quite a lot of fixes and improvements. See below links. The modules frame work is included for larger applications, I’m looking forward to getting my hands dirty with that, as well as the runtime CSS styling, a feature much anticipated. 

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