     {
         _headerText = value;
         
-        // Todo: invalidate just the GridColumnHeaderGroup not the entire grid?
         if (grid)
             grid.invalidateDisplayList();
 

    
    private var _maxWidth:Number = NaN;
    
    [Bindable("maxWidthChanged")]    
    
    /**
     *  The maximum width of this column in pixels. If specified, the grid's layout will make

    //----------------------------------
    
    private var _rendererIsEditable:Boolean = false;
    
    [Bindable("rendererIsEditableChanged")]
    
    /**
     *  Determines whether any of the item renderer's controls are editable.
