Able to drag drop items of combobox but want to disable 1st item

Question

Hello Sir,
I am able to drag drop elements of the combobox.
Here is my code...
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" xmlns:local="*" xmlns:utils="adobe.utils.*" xmlns:controls="qs.controls.*" initialize="init()">
<mx:Script>
<![CDATA[
import mx.events.DragEvent;
import mx.events.ListEvent;
import mx.controls.dataGridClasses.DataGridColumn;
import mx.controls.ComboBox;
import mx.controls.Alert;
[Bindable]
public var str:String = "";
public var comboLength:int;
public function init():void
var xml:XML = <test>
<col>
<col1>one</col1>
</col>
<col>
<col1>two</col1>
</col>
<col>
<col1>three</col1>
</col>
<col>
<col1>four</col1>
</col>
<col>
<col1>five</col1>
</col>
<col>
<col1>six</col1>
</col>
<col>
<col1>seven</col1>
</col>
  </test>;
  cb1.dataProvider = xml;
  comboLength = xml.col.length();
  cb1.rowCount = comboLength;
  str = (xml.col[0].col1.toString());
  cb1.prompt = str;
public function closeHandler(event:Event):void
if(MouseEvent.DOUBLE_CLICK)
// Alert.show("Click Event");
public function changeHandler(event:ListEvent):void
// Alert.show("Single Click Event");
public function doubleClickEvent(event:MouseEvent):void
Alert.show(event.currentTarget.toString());
Alert.show(event.target.toString(),"Double Click");
public function dragEnterFunction(event:DragEvent):void
Alert.show(event.target.parent.toString());
]]>
</mx:Script>
<mx:ComboBox id="cb1" prompt="prashant" doubleClickEnabled="true" doubleClick="doubleClickEvent(event)"
close="closeHandler(event)" dragEnter="dragEnterFunction(event)" >
<mx:itemRenderer>
<mx:Component>
<mx:DataGrid itemClick="outerDocument.cb1.text = this.selectedItem.col1.toString();itemSelected(event)"
dragEnabled="true" dropEnabled="true" dragDrop="draDropHandler(event)" dragMoveEnabled="true" headerHeight="0" showHeaders="false"
creationComplete="init()" click="clickable()"
itemDoubleClick="doubleClickEvent(event)">
<mx:columns>
<mx:DataGridColumn dataField="col1" headerText="" id="da" disabledColor="white"  />
</mx:columns>
<mx:Script>
<![CDATA[
import mx.controls.DataGrid;
import mx.events.DropdownEvent;
import mx.events.ListEvent;
import mx.events.DragEvent;
import mx.controls.Label;
import mx.controls.Alert;
public function clickable():void
//Alert.show("clickable");
public function itemSelected(event:ListEvent):void
Alert.show(event.itemRenderer.data.col1,"Single Click");
     public function draDropHandler(event:Event):void
Alert.show(event.target.parent.toString());
public function dragEnterFunction(event:DragEvent):void
Alert.show(event.target.parent);
override public function set data( value:Object ) : void
this.dataProvider = value.col;
//outerDocument.cb1.text = this.selectedItem.col1.toString()
//myList.addEventListener(ListEvent.ITEM_DOUBLE_CLICK, onItemDoubleClick,
public function doubleClickEvent(event:ListEvent):void
Alert.show(event.itemRenderer.data.col1,"Double Click");
]]>
</mx:Script>
</mx:DataGrid>
</mx:Component>
</mx:itemRenderer>
</mx:ComboBox>
</mx:Application>
But now i want to disable drag drop of the 1st item and the last item.
And also add double click of each item.
Can someone please help me out.
Awaiting your reply.
Thanks in advance.

Answer 1

Hello Sir,
Thanks a lot for your reply.
I have implemented some thing can you please help me out with this?
In this can you help me out with the double click event????
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical"
xmlns:local="" xmlns:utils="adobe.utils." xmlns:controls="qs.controls.*"
initialize="init()">
<mx:Script>
<![CDATA[
import mx.events.DragEvent;
import mx.events.ListEvent;
import mx.controls.dataGridClasses.DataGridColumn;
import mx.controls.ComboBox;
import mx.controls.Alert;
import mx.controls.listClasses.ListBase;
import mx.core.UIComponent;
public var str:String = "";
public var comboLength:int;
public function init():void
var xml:XML =
</mx:Application