text: /**************************************************************************/
  /*                Lablgtk                                                 */
  /*                                                                        */
  /*    This program is free software; you can redistribute it              */
  /*    and/or modify it under the terms of the GNU Library General         */
  /*    Public License as published by the Free Software Foundation         */
  /*    version 2, with the exception described in file COPYING which       */
  /*    comes with the library.                                             */
  /*                                                                        */
  /*    This program is distributed in the hope that it will be useful,     */
  /*    but WITHOUT ANY WARRANTY; without even the implied warranty of      */
  /*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the       */
  /*    GNU Library General Public License for more details.                */
  /*                                                                        */
  /*    You should have received a copy of the GNU Library General          */
  /*    Public License along with this program; if not, write to the        */
  /*    Free Software Foundation, Inc., 59 Temple Place, Suite 330,         */
  /*    Boston, MA 02111-1307  USA                                          */
  /*                                                                        */
  /*                                                                        */
  /**************************************************************************/
  
  #define GtkTreeIter_val(val) ((GtkTreeIter*)MLPointer_val(val))
  #define Val_GtkTreeIter(it) (copy_memblock_indirected(it,sizeof(GtkTreeIter)))
  #define GtkTreeIter_optval(v) Option_val(v, GtkTreeIter_val, NULL)
  #define GtkTreePath_optval(v) Option_val(v, GtkTreePath_val, NULL)
  #define GtkTreeModel_optval(v) Option_val(v, GtkTreeModel_val, NULL)
  #define GtkCellRenderer_optval(v) Option_val(v, GtkCellRenderer_val, NULL)
  #define GtkTreeViewColumn_optval(v) Option_val(v, GtkTreeViewColumn_val, NULL)
  
  gboolean ml_gtk_row_separator_func (GtkTreeModel *model,
  				    GtkTreeIter *iter,
  				    gpointer data);
  
  