      */
     function get column():GridColumn;
     function set column(value:GridColumn):void;
+    
+    /**
+     *  The column index for this item renderer's cell, typically just the value of 
+     *  <code>column.columnIndex</code>.
+     * 
+     *  @langversion 3.0
+     *  @playerversion Flash 10
+     *  @playerversion AIR 2.5
+     *  @productversion Flex 4.5 
+     */
+    function get columnIndex():int;    
     
     /**
      *  Called from the item renderer owner's <code>updateDisplayList()</code> method 

{
import mx.core.IDataRenderer;
import mx.core.IVisualElement;
    
/**
 *  The IGridItemRenderer interface defines the interface that item renderers 

public interface IGridItemRenderer extends IDataRenderer, IVisualElement
{
    /**
     *  The Grid associated with this item renderer, typically just the value of
     *  <code>column.grid</code>.
     * 
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 2.5
     *  @productversion Flex 4.5
     */
    function get grid():Grid;
    
    /**
     *  The zero-based index of the row of the cell being rendered.
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10
