Tree Show toolTip during drag

I am denying a user the ability to drop into my tree during certain conditions, it's all going well, but I want to tell the user why I'm denying the drop. I would prefer to do it with a toolTip, but it doesn't seem to work. Can I not have a toolTip during a drag operation? How can I force one?

Flex seems to treat toolTips as a property of the UI component, with the component deciding when and if to show it. I would like it to force it to be li开发者_Go百科ke doing one in javaScript where it was always just like saying "Show it now" "stop showing it now"

Does anyone know about doing this during drag?

Thanks

~Mike

What you could try is to show the tooltip yourself with the mx.managers.ToolTipManager. Create for example a VBox that implements mx.controls.ToolTip and displays the message you want to show to the user.

You can see a working example at FlexExamples.

Another idea is to show a programmatic mouse cursor when the drop is denied. I've just read an article about that on Inside Ria.