User Guide

Tree.setIcon() 1307

linkID2 For a branch node, the linkage identifier of a symbol to be used as an icon that

represents the open state of the node. This parameter is optional.

Returns

Nothing.

Description

Method; specifies an icon for the specified node. This method takes one ID parameter

(

linkID) for leaf nodes and two ID parameters (linkID and linkID2) for branch nodes (the

closed and open icons). For leaf nodes, the second parameter is ignored. For branch nodes, if

you omit

linkID2, the icon is used for both the closed and open states.

Example

The following example adds two nodes to a Tree instance called my_tr and calls the

setIcon() function to specify an icon in the library with a Linkage ID of imageIcon for the

second node.

You must first add an instance of the Tree component to the Stage and name it

my_tr and add

an icon to the library with a Linkage ID of

imageIcon; then add the following code to Frame

/**

Requires:

- Tree component on Stage (instance name: my_tr)

- Library item with Linkage ID of imageIcon

var my_tr:mx.controls.Tree;

my_tr.setSize(200, 100);

var trDP_xml:XML = new XML("<node label='1st Local Folders'><node

label='Inbox' data='0' /><node label='Outbox' data='1' /></node><node

label='2nd Local Folders'><node label='Inbox' data='2' /><node

label='Outbox' data='3' /></node>");

my_tr.dataProvider = trDP_xml;

// Set movieclip as icon for 2nd node.

my_tr.setIcon(my_tr.getTreeNodeAt(1), "imageIcon");