How to get the Clicked Item of a ListBox?

Question

I need to get the clicked item of a listbox.
The item can be at first selected, when I click it again, it
automatically gets de-selected, but I want to get that item
whenever I click it. Any idea how to do this?
This line does not work, because it gets the selected item.
var pattern:String = event.currentTarget.selectedItem.myname;
This one must work,but something is missing.
Anyone can help me with this?
marks is my ArrayCollection;
var pattern:String =marks.getItemAt[??].myname;

Answer 1

Here is my code. Am using this function in the itemclick
event of the ListBox.
My ListBox is a multi-select listbox. So am selecting several
items by pressing "Ctrl" key and selecting each item using click.
Say I have selected 4 items, when I press "Ctrl" and
de-select one of the items, I want to get the itemname of the
deselected item.
public function createMarksList(event:ListEvent):void{
// Alert.show(new
String(event.currentTarget.selectedItem.myname));
// var pattern:String =
event.currentTarget.selectedItem.myname;
// pattern = pattern += "," + pattern;
// text1.text = pattern;
<mx:List x="9" y="46" width="121" height="121"
id="lstMarks" allowMultipleSelection="true"
itemClick="createMarksList(event)"></mx:List>
So, your help is required here buddy.
I sitll can't figure out.
Thx