     /**
      *  Determines the column under the mouse for dropping a column, if any.
      *  This method only checks horizontal position, and assumes the y value is within headers.
+     *  
+     *  @langversion 3.0
+     *  @playerversion Flash 9
+     *  @playerversion AIR 1.1
+     *  @productversion Flex 3
      */
     mx_internal function getAllVisibleColumns():Array
     {

     *
     *  @return A Point object. The <code>x</code> property is the <code>columnIndex</code>
     *  and the <code>y</code> property is the <code>rowIndex</code>.
     */
    override protected function itemRendererToIndices(item:IListItemRenderer):Point
    {

 *    showHeaders="true|false"
 *  /&gt;
 *  </pre>
 *  
 *  @langversion 3.0
 *  @playerversion Flash 9
 *  @playerversion AIR 1.1
 *  @productversion Flex 3
 */
public class DataGridBase extends ListBase implements IFontContextComponent
{
