Regression with tree.iconFunction: default icons have disapperead

Question

I have a tree control, with icon function redifined.
However, for some items, I would like to use default tree
icons (folder, sheet,...)
In Flex 1.5, if returned null from the iconFunction, the
default icon was displayed.
In Flex 2.0, this does not work anymore. The doc says that
the icons are in Assets.swf, but how to reference and embed them in
my application ?

Answer 1

Here's a code snippet of one way to set Tree's icons:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
width="600" height="600">
<mx:Script>
<![CDATA[
[Bindable]
[Embed(source="smallU.jpg")]
public var redU:Class;
[Bindable]
public var treeArray:Object =
{ label:"Containers", children:
{ label:"DividedBoxClasses", children:
{ label:"BoxDivider", data:"BoxDivider.as" }
{ label:"GridClasses", children:
{ label:"GridRow", data:"GridRow.as" },
{ label:"GridItem", data:"GridItem.as" }
{ label:"Printing", children:
{ label:"PrintJob", data:"PrintJob.as"},
{ label:"PrintJob1", data:"PrintJob1.as" },
{ label:"PrintDataGrid", data:"PrintDataGrid.as" }
]]>
</mx:Script>
<mx:Tree dataProvider="{treeArray}"
disclosureClosedIcon="{redU}" />
</mx:Application>
There's a a style property mapping to each Tree icon (ex:
folderOpenIcon, defaultLeafIcon).
Hope that helps,
Belinda