<?xml version="1.0" encoding="iso-8859-1"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">

  <mx:Panel id="painel" title="Estudos" status="Active" 
     height="300" width="200" paddingTop="10" 
     paddingLeft="10" paddingRight="10" 
     paddingBottom="10">

    <mx:List id="listaNomes" width="150" rowCount="4"
      allowMultipleSelection="true" 
      dataProvider="{mNomes}"/>

    <mx:Button label="Excluir Itens Selecionados" 
       click="excluirSelecionados();"/>

  </mx:Panel>

  <mx:Script>
    <![CDATA[
      import mx.controls.Alert;      
      import mx.collections.ArrayCollection;
      import mx.collections.SortField;
      import mx.collections.Sort;

      [Bindable]
      public var mNomes:ArrayCollection = 
        new ArrayCollection(["Osmar", "Carlos", 
          "Fernanda", "Igor", "Amélia"]);

      private function excluirSelecionados():void{
        var indices:ArrayCollection = 
          new ArrayCollection(listaNomes.selectedIndices);
        // temos que ordenar os índices dos
        // itens selecionados        
        var sort:Sort = new Sort();
        var sortField:SortField = 
          new SortField(null, true);
        sortField.numeric = true;
        sort.fields = [sortField];
        indices.sort = sort;
        indices.refresh();          

        for(var i:int = indices.length - 1; i >= 0; i--){
          mNomes.removeItemAt(
            (int)(indices.getItemAt(i)));
        }

        Alert.show("Itens excluídos com sucesso.", 
          "Mensagem");
      }
    ]]>
  </mx:Script>  

</mx:Application>