diff --git a/demos/gtk-demo/tree_store.c b/demos/gtk-demo/tree_store.c
index 4ae9e2a..52b6034 100644
--- a/demos/gtk-demo/tree_store.c
+++ b/demos/gtk-demo/tree_store.c
@@ -91,8 +91,6 @@ static void iterating_a_model_in_a_depth_first_fashion (GtkTreeModel *model)
 {
   //  gboolean (*GtkTreeModelForeachFunc) (GtkTreeModel *model, GtkTreePath *path,  GtkTreeIter *iter, gpointer data);
   GtkTreeIter iter, iter_parent;
-  gboolean valid = 0;
-//  GtkTreePath *chemin;
   char *str_data;
   int row_count = 0;
 
@@ -104,7 +102,7 @@ static void iterating_a_model_in_a_depth_first_fashion (GtkTreeModel *model)
   gtk_tree_model_iter_children (model, &iter, &iter_parent);  //  Sets iter to point to the first child of parent.
   //gtk_tree_model_iter_next (model, &iter);
   gtk_tree_model_get (model, &iter, STRING_COLUMN, &str_data, -1);
-  g_print ("next row %d: (%s)  <  False  (should be 'A'   - line 104)\n", row_count, str_data);
+  g_print ("next row %d: (%s)  <  False  (should be 'A'   <-- line 104)\n", row_count, str_data);
 
  /*  while (valid) first row 0: (ROOT)  next row 0: (D)*/
  /* { */
@@ -122,7 +120,7 @@ static void iterating_a_model_in_a_depth_first_fashion (GtkTreeModel *model)
 }
 
 static void  /*  https://developer-old.gnome.org/gtk4/stable/GtkTreeModel.html#GtkTreePath-struct  and  #gtk-tree-row-reference-new   */
-gtk_tree_model_get_data_from_path (GtkTreeModel *my_tree_model,
+gtk_tree_model_get_data_from_iter (GtkTreeModel *my_tree_model,
                          GtkCellEditable *cell_editable,
                          GtkTreeIter *my_iter,
                          GdkEvent *event,
@@ -132,9 +130,8 @@ gtk_tree_model_get_data_from_path (GtkTreeModel *my_tree_model,
 
   gtk_tree_model_get_iter (my_tree_model, &my_iter, my_path);
   gtk_tree_model_get (my_tree_model, &my_iter, STRING_COLUMN, &str_data, -1);
-  g_print ("row from path %s = (%s)\n",\
-           gtk_tree_model_get_string_from_iter(my_tree_model, &my_iter),
-           str_data);
+  g_print ("row from iter at [ %s ] = '%s'\n",\
+           gtk_tree_model_get_string_from_iter(my_tree_model, &my_iter), str_data);
   gtk_tree_path_free (my_path);
 }
 
@@ -241,8 +238,8 @@ do_tree_store (GtkWidget *do_widget)
       iterating_a_model_in_a_depth_first_fashion (my_tree_model);
    //   GtkTreePath *my_path = gtk_tree_path_new_from_string ("0:0:1:0:1");
    //   acquiring_a_GtkTreeIter (my_tree_model, my_path);
-   //   GtkTreeIter *my_iter;
-      gtk_tree_model_get_data_from_path (my_tree_model, NULL, NULL, NULL, gtk_tree_path_new_from_string ("0:0:0:2"));
+      GtkTreeIter *my_iter;
+      gtk_tree_model_get_data_from_iter (my_tree_model, NULL, my_iter, NULL, gtk_tree_path_new_from_string ("0:0:0:1:0:1"));
 
       /* create tree view */
       treeview = gtk_tree_view_new_with_model (my_tree_model);