     [Bindable("headerRendererChanged")]
     
     /**
-     *  A factory for the IGridItemRenderer used as the header for this column.  
+     *  A factory for the IGridItemRenderer used as the header for this column.  If null,
+     *  the value of the DataGrid headerRenderer property is returned. 
      * 
      *  @default null
      *


import mx.core.ClassFactory;
import mx.core.IFactory;
import mx.core.mx_internal;
import mx.core.Singleton;

import spark.components.Grid;

use namespace mx_internal;

        dispatchChangeEvent("dataFieldChanged");
    }
    
    
    //----------------------------------
    //  dataGrid (private, read-only)
    //----------------------------------
    
    /**
     *  @private
     */
    private function get dataGrid():spark.components.DataGrid
    {
        return (grid) ? grid.gridOwner as DataGrid : null;
    }
    
    //----------------------------------
    //  dataTipField
    //----------------------------------
