Flex 4.5 Tree component

• How to add vertical distance between tree header & 1st node of that?
• How to set开发者_运维百科 the background color of node' label when that node is selected.

I don't believe there is an easy way to add vertical distance between tree header and first node. It would be possible through making a customer TreeItemRenderer and just adding a gap at the top.

To change the background color of a node when it is selected you can use

myTree.setStyle( "selectionColor", 0x0000FF );

or declared in the mxml as a property of the control

<mx:Tree selectionColor="0x0000FF" />