I have searched through the "lovely" :p Flex help files and
have come up with the coding to change the open/closed icons for
the tree, BUT - when I put them in as part of my tree style, it
doesn't cause an error, but suddenly my whole tree, including the
background does not show.
The Flash 8.5 player I have does not seem to come with a
debugger in it, so I can't find out what is wrong.
I was looking to do the same thing, but in Flex 2, I get an
error (see below) and the whole rest of the app doesn't display.
TypeError: Error #1034: Type Coercion failed: cannot convert
"images/folderClosed16.png" to Class.
http://adobe.com/AS3/2006/builtin::apply() at mx.core::UIComponent/::callLaterDispatcher2()
I'll resurrect this thread to see if it gets some traction