more changes in an attempt to get it right. It's not yet ready for general

Wed Oct 24 20:29:47 2001  Kristian Rietveld  <kristian@planet.nl>

        * gtk/gtktreemodelsort.c: more changes in an attempt to get
        it right. It's not yet ready for general consumption.

        * tests/treestoretest.c: add a button and entry for the new
        iter_change function
        (iter_change): new function, to test
        the row_changed signal implementation of the GtkTreeModelSort

        * tests/testtreesort.c: cleanups, changes to test more features
        of the GtkTreeModelSort at once

2 files changed, 224 insertions, 190 deletions

diff --git a/tests/testtreesort.c b/tests/testtreesort.c
index 69bceb1be9..33313311cb 100644
--- a/tests/testtreesort.c
+++ b/tests/testtreesort.c
@@ -57,12 +57,12 @@ main (int argc, char *argv[])
   GtkWidget *scrolled_window;
   GtkWidget *tree_view;
   GtkTreeStore *model;
-  GtkTreeModel *smodel;
+  GtkTreeModel *smodel = NULL;
   GtkTreeModel *ssmodel = NULL;
   GtkCellRenderer *renderer;
   GtkTreeViewColumn *column;
   GtkTreeIter iter;
-  gint i, j;
+  gint i;
 
   GtkWidget *window2, *vbox2, *scrolled_window2, *tree_view2;
   GtkWidget *window3, *vbox3, *scrolled_window3, *tree_view3;
@@ -87,40 +87,43 @@ main (int argc, char *argv[])
   gtk_box_pack_start (GTK_BOX (vbox), scrolled_window, TRUE, TRUE, 0);
 
   model = gtk_tree_store_new (NUM_COLUMNS, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING, G_TYPE_STRING);
+
+/*
   smodel = gtk_tree_model_sort_new_with_model (GTK_TREE_MODEL (model));
   ssmodel = gtk_tree_model_sort_new_with_model (GTK_TREE_MODEL (smodel));
-
+*/
   tree_view = gtk_tree_view_new_with_model (GTK_TREE_MODEL (model));
-  for (j = 0; j < 2; j++)
-    for (i = 0; data[i].word_1 != NULL; i++)
-      {
-	gint k;
-
-	gtk_tree_store_prepend (GTK_TREE_STORE (model), &iter, NULL);
-	gtk_tree_store_set (GTK_TREE_STORE (model), &iter,
-			    WORD_COLUMN_1, data[i].word_1,
-			    WORD_COLUMN_2, data[i].word_2,
-			    WORD_COLUMN_3, data[i].word_3,
-			    WORD_COLUMN_4, data[i].word_4,
-			    -1);
 
-	for (k = 0; childdata[k].word_1 != NULL; k++)
-	  {
-	    GtkTreeIter child_iter;
-
-	    gtk_tree_store_append (GTK_TREE_STORE (model), &child_iter, &iter);
-	    gtk_tree_store_set (GTK_TREE_STORE (model), &child_iter,
-				WORD_COLUMN_1, childdata[k].word_1,
-				WORD_COLUMN_2, childdata[k].word_2,
-				WORD_COLUMN_3, childdata[k].word_3,
-				WORD_COLUMN_4, childdata[k].word_4,
-				-1);
-	  }
-      }
-/*
+  /* 12 iters now, 12 later... */
+  for (i = 0; data[i].word_1 != NULL; i++)
+    {
+      gint k;
+      
+      gtk_tree_store_prepend (GTK_TREE_STORE (model), &iter, NULL);
+      gtk_tree_store_set (GTK_TREE_STORE (model), &iter,
+			  WORD_COLUMN_1, data[i].word_1,
+			  WORD_COLUMN_2, data[i].word_2,
+			  WORD_COLUMN_3, data[i].word_3,
+			  WORD_COLUMN_4, data[i].word_4,
+			  -1);
+      
+      for (k = 0; childdata[k].word_1 != NULL; k++)
+	{
+	  GtkTreeIter child_iter;
+	  
+	  gtk_tree_store_append (GTK_TREE_STORE (model), &child_iter, &iter);
+	  gtk_tree_store_set (GTK_TREE_STORE (model), &child_iter,
+			      WORD_COLUMN_1, childdata[k].word_1,
+			      WORD_COLUMN_2, childdata[k].word_2,
+			      WORD_COLUMN_3, childdata[k].word_3,
+			      WORD_COLUMN_4, childdata[k].word_4,
+			      -1);
+	}
+    }
+  
   smodel = gtk_tree_model_sort_new_with_model (GTK_TREE_MODEL (model));
   ssmodel = gtk_tree_model_sort_new_with_model (GTK_TREE_MODEL (smodel));
-*/
+
   g_object_unref (G_OBJECT (model));
   gtk_tree_view_set_rules_hint (GTK_TREE_VIEW (tree_view), TRUE);
 
@@ -152,11 +155,11 @@ main (int argc, char *argv[])
   gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_4);
 
   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), column);
-/*
+
   gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (smodel),
 					WORD_COLUMN_1,
 					GTK_SORT_ASCENDING);
-  */
+
   gtk_container_add (GTK_CONTAINER (scrolled_window), tree_view);
   gtk_window_set_default_size (GTK_WINDOW (window), 400, 400);
   gtk_widget_show_all (window);
@@ -166,167 +169,169 @@ main (int argc, char *argv[])
    * Second window - GtkTreeModelSort wrapping the GtkTreeStore
    */
 
-  window2 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-  gtk_window_set_title (GTK_WINDOW (window2), 
-			"Words, words, words - window 2");
-  gtk_signal_connect (GTK_OBJECT (window2), "destroy", gtk_main_quit, NULL);
-  vbox2 = gtk_vbox_new (FALSE, 8);
-  gtk_container_set_border_width (GTK_CONTAINER (vbox2), 8);
-  gtk_box_pack_start (GTK_BOX (vbox2), 
-		      gtk_label_new ("Jonathan and Kristian's list of words.\n\nA GtkTreeModelSort wrapping the GtkTreeStore of window 1"),
-                      FALSE, FALSE, 0);
-  gtk_container_add (GTK_CONTAINER (window2), vbox2);
-
-  scrolled_window2 = gtk_scrolled_window_new (NULL, NULL);
-  gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window2),
-                                       GTK_SHADOW_ETCHED_IN);
-  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window2),
-                                  GTK_POLICY_AUTOMATIC,
-                                  GTK_POLICY_AUTOMATIC);
-  gtk_box_pack_start (GTK_BOX (vbox2), scrolled_window2, TRUE, TRUE, 0);
-
-
-  tree_view2 = gtk_tree_view_new_with_model (smodel);
-  gtk_tree_view_set_rules_hint (GTK_TREE_VIEW (tree_view2), TRUE);
-
-
-  renderer = gtk_cell_renderer_text_new ();
-  column = gtk_tree_view_column_new_with_attributes ("First Word", renderer,
-                                                     "text", WORD_COLUMN_1,
-                                                     NULL);
-  gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view2), column);
-  gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_1);
-
-  renderer = gtk_cell_renderer_text_new ();
-  column = gtk_tree_view_column_new_with_attributes ("Second Word", renderer,
-                                                     "text", WORD_COLUMN_2,
-                                                     NULL);
-  gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_2);
-  gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view2), column);
-
-  renderer = gtk_cell_renderer_text_new ();
-  column = gtk_tree_view_column_new_with_attributes ("Third Word", renderer,
-                                                     "text", WORD_COLUMN_3,
-                                                     NULL);
-  gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_3);
-  gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view2), column);
-
-  renderer = gtk_cell_renderer_text_new ();
-  column = gtk_tree_view_column_new_with_attributes ("Fourth Word", renderer,
-                                                     "text", WORD_COLUMN_4,
-                                                     NULL);
-  gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_4);
-  gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view2), column);
-
-  gtk_tree_sortable_set_default_sort_func (GTK_TREE_SORTABLE (smodel),
-		  (GtkTreeIterCompareFunc)gtk_tree_data_list_compare_func,
-		  NULL, NULL);
-/*
-  gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (smodel),
-                                        WORD_COLUMN_1,
-                                        GTK_SORT_DESCENDING);
-					*/
-
-  gtk_container_add (GTK_CONTAINER (scrolled_window2), tree_view2);
-  gtk_window_set_default_size (GTK_WINDOW (window2), 400, 400);
-  gtk_widget_show_all (window2);
-
+  if (smodel)
+    {
+      window2 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+      gtk_window_set_title (GTK_WINDOW (window2), 
+			    "Words, words, words - window 2");
+      gtk_signal_connect (GTK_OBJECT (window2), "destroy", gtk_main_quit, NULL);
+      vbox2 = gtk_vbox_new (FALSE, 8);
+      gtk_container_set_border_width (GTK_CONTAINER (vbox2), 8);
+      gtk_box_pack_start (GTK_BOX (vbox2), 
+			  gtk_label_new ("Jonathan and Kristian's list of words.\n\nA GtkTreeModelSort wrapping the GtkTreeStore of window 1"),
+			  FALSE, FALSE, 0);
+      gtk_container_add (GTK_CONTAINER (window2), vbox2);
+      
+      scrolled_window2 = gtk_scrolled_window_new (NULL, NULL);
+      gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window2),
+					   GTK_SHADOW_ETCHED_IN);
+      gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window2),
+				      GTK_POLICY_AUTOMATIC,
+				      GTK_POLICY_AUTOMATIC);
+      gtk_box_pack_start (GTK_BOX (vbox2), scrolled_window2, TRUE, TRUE, 0);
+      
+      
+      tree_view2 = gtk_tree_view_new_with_model (smodel);
+      gtk_tree_view_set_rules_hint (GTK_TREE_VIEW (tree_view2), TRUE);
+      
+      
+      renderer = gtk_cell_renderer_text_new ();
+      column = gtk_tree_view_column_new_with_attributes ("First Word", renderer,
+							 "text", WORD_COLUMN_1,
+							 NULL);
+      gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view2), column);
+      gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_1);
+      
+      renderer = gtk_cell_renderer_text_new ();
+      column = gtk_tree_view_column_new_with_attributes ("Second Word", renderer,
+							 "text", WORD_COLUMN_2,
+							 NULL);
+      gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_2);
+      gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view2), column);
+      
+      renderer = gtk_cell_renderer_text_new ();
+      column = gtk_tree_view_column_new_with_attributes ("Third Word", renderer,
+							 "text", WORD_COLUMN_3,
+							 NULL);
+      gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_3);
+      gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view2), column);
+      
+      renderer = gtk_cell_renderer_text_new ();
+      column = gtk_tree_view_column_new_with_attributes ("Fourth Word", renderer,
+							 "text", WORD_COLUMN_4,
+							 NULL);
+      gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_4);
+      gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view2), column);
+      
+      gtk_tree_sortable_set_default_sort_func (GTK_TREE_SORTABLE (smodel),
+					       (GtkTreeIterCompareFunc)gtk_tree_data_list_compare_func,
+					       NULL, NULL);
+      gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (smodel),
+					    WORD_COLUMN_1,
+					    GTK_SORT_DESCENDING);
+      
+      gtk_container_add (GTK_CONTAINER (scrolled_window2), tree_view2);
+      gtk_window_set_default_size (GTK_WINDOW (window2), 400, 400);
+      gtk_widget_show_all (window2);
+    }
+  
   /**
    * Third window - GtkTreeModelSort wrapping the GtkTreeModelSort which
    * is wrapping the GtkTreeStore.
    */
-
-  if (ssmodel) {
-  window3 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
-  gtk_window_set_title (GTK_WINDOW (window3), 
-			"Words, words, words - Window 3");
-  gtk_signal_connect (GTK_OBJECT (window3), "destroy", gtk_main_quit, NULL);
-  vbox3 = gtk_vbox_new (FALSE, 8);
-  gtk_container_set_border_width (GTK_CONTAINER (vbox3), 8);
-  gtk_box_pack_start (GTK_BOX (vbox3), 
-		      gtk_label_new ("Jonathan and Kristian's list of words.\n\nA GtkTreeModelSort wrapping the GtkTreeModelSort of window 2"),
-                      FALSE, FALSE, 0);
-  gtk_container_add (GTK_CONTAINER (window3), vbox3);
-
-  scrolled_window3 = gtk_scrolled_window_new (NULL, NULL);
-  gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window3),
-                                       GTK_SHADOW_ETCHED_IN);
-  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window3),
-                                  GTK_POLICY_AUTOMATIC,
-                                  GTK_POLICY_AUTOMATIC);
-  gtk_box_pack_start (GTK_BOX (vbox3), scrolled_window3, TRUE, TRUE, 0);
-
-
-  tree_view3 = gtk_tree_view_new_with_model (ssmodel);
-  gtk_tree_view_set_rules_hint (GTK_TREE_VIEW (tree_view3), TRUE);
-
-
-  renderer = gtk_cell_renderer_text_new ();
-  column = gtk_tree_view_column_new_with_attributes ("First Word", renderer,
-                                                     "text", WORD_COLUMN_1,
-                                                     NULL);
-  gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view3), column);
-  gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_1);
-
-  renderer = gtk_cell_renderer_text_new ();
-  column = gtk_tree_view_column_new_with_attributes ("Second Word", renderer,
-                                                     "text", WORD_COLUMN_2,
-                                                     NULL);
-  gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_2);
-  gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view3), column);
-
-  renderer = gtk_cell_renderer_text_new ();
-  column = gtk_tree_view_column_new_with_attributes ("Third Word", renderer,
-                                                     "text", WORD_COLUMN_3,
-                                                     NULL);
-  gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_3);
-  gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view3), column);
-
-  renderer = gtk_cell_renderer_text_new ();
-  column = gtk_tree_view_column_new_with_attributes ("Fourth Word", renderer,
-                                                     "text", WORD_COLUMN_4,
-                                                     NULL);
-  gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_4);
-  gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view3), column);
-/*
-  gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (ssmodel),
-                                        WORD_COLUMN_1,
-                                        GTK_SORT_ASCENDING);
-*/
-  gtk_container_add (GTK_CONTAINER (scrolled_window3), tree_view3);
-  gtk_window_set_default_size (GTK_WINDOW (window3), 400, 400);
-  gtk_widget_show_all (window3);
-  }
-
-/*
-  for (j = 0; j < 2; j++)
-    for (i = 0; data[i].word_1 != NULL; i++)
-      {
-	gint k;
-
-        gtk_tree_store_prepend (GTK_TREE_STORE (model), &iter, NULL);
-        gtk_tree_store_set (GTK_TREE_STORE (model), &iter,
-                            WORD_COLUMN_1, data[i].word_1,
-                            WORD_COLUMN_2, data[i].word_2,
-                            WORD_COLUMN_3, data[i].word_3,
-                            WORD_COLUMN_4, data[i].word_4,
-                            -1);
-
-	for (k = 0; childdata[k].word_1 != NULL; k++)
-	  {
-	    GtkTreeIter child_iter;
-
-	    gtk_tree_store_append (GTK_TREE_STORE (model), &child_iter, &iter);
-	    gtk_tree_store_set (GTK_TREE_STORE (model), &child_iter,
-				WORD_COLUMN_1, childdata[k].word_1,
-				WORD_COLUMN_2, childdata[k].word_2,
-				WORD_COLUMN_3, childdata[k].word_3,
-				WORD_COLUMN_4, childdata[k].word_4,
-				-1);
-	  }
-      }
-*/
+  
+  if (ssmodel)
+    {
+      window3 = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+      gtk_window_set_title (GTK_WINDOW (window3), 
+			    "Words, words, words - Window 3");
+      gtk_signal_connect (GTK_OBJECT (window3), "destroy", gtk_main_quit, NULL);
+      vbox3 = gtk_vbox_new (FALSE, 8);
+      gtk_container_set_border_width (GTK_CONTAINER (vbox3), 8);
+      gtk_box_pack_start (GTK_BOX (vbox3), 
+			  gtk_label_new ("Jonathan and Kristian's list of words.\n\nA GtkTreeModelSort wrapping the GtkTreeModelSort of window 2"),
+			  FALSE, FALSE, 0);
+      gtk_container_add (GTK_CONTAINER (window3), vbox3);
+      
+      scrolled_window3 = gtk_scrolled_window_new (NULL, NULL);
+      gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window3),
+					   GTK_SHADOW_ETCHED_IN);
+      gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window3),
+				      GTK_POLICY_AUTOMATIC,
+				      GTK_POLICY_AUTOMATIC);
+      gtk_box_pack_start (GTK_BOX (vbox3), scrolled_window3, TRUE, TRUE, 0);
+      
+      
+      tree_view3 = gtk_tree_view_new_with_model (ssmodel);
+      gtk_tree_view_set_rules_hint (GTK_TREE_VIEW (tree_view3), TRUE);
+      
+      
+      renderer = gtk_cell_renderer_text_new ();
+      column = gtk_tree_view_column_new_with_attributes ("First Word", renderer,
+							 "text", WORD_COLUMN_1,
+							 NULL);
+      gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view3), column);
+      gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_1);
+      
+      renderer = gtk_cell_renderer_text_new ();
+      column = gtk_tree_view_column_new_with_attributes ("Second Word", renderer,
+							 "text", WORD_COLUMN_2,
+							 NULL);
+      gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_2);
+      gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view3), column);
+      
+      renderer = gtk_cell_renderer_text_new ();
+      column = gtk_tree_view_column_new_with_attributes ("Third Word", renderer,
+							 "text", WORD_COLUMN_3,
+							 NULL);
+      gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_3);
+      gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view3), column);
+      
+      renderer = gtk_cell_renderer_text_new ();
+      column = gtk_tree_view_column_new_with_attributes ("Fourth Word", renderer,
+							 "text", WORD_COLUMN_4,
+							 NULL);
+      gtk_tree_view_column_set_sort_column_id (column, WORD_COLUMN_4);
+      gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view3), column);
+      
+      gtk_tree_sortable_set_default_sort_func (GTK_TREE_SORTABLE (ssmodel),
+					       (GtkTreeIterCompareFunc)gtk_tree_data_list_compare_func,
+					       NULL, NULL);
+      gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (ssmodel),
+					    WORD_COLUMN_1,
+					    GTK_SORT_ASCENDING);
+      
+      gtk_container_add (GTK_CONTAINER (scrolled_window3), tree_view3);
+      gtk_window_set_default_size (GTK_WINDOW (window3), 400, 400);
+      gtk_widget_show_all (window3);
+    }
+  
+  for (i = 0; data[i].word_1 != NULL; i++)
+    {
+      gint k;
+      
+      gtk_tree_store_prepend (GTK_TREE_STORE (model), &iter, NULL);
+      gtk_tree_store_set (GTK_TREE_STORE (model), &iter,
+			  WORD_COLUMN_1, data[i].word_1,
+			  WORD_COLUMN_2, data[i].word_2,
+			  WORD_COLUMN_3, data[i].word_3,
+			  WORD_COLUMN_4, data[i].word_4,
+			  -1);
+      for (k = 0; childdata[k].word_1 != NULL; k++)
+	{
+	  GtkTreeIter child_iter;
+	  
+	  gtk_tree_store_append (GTK_TREE_STORE (model), &child_iter, &iter);
+	  gtk_tree_store_set (GTK_TREE_STORE (model), &child_iter,
+			      WORD_COLUMN_1, childdata[k].word_1,
+			      WORD_COLUMN_2, childdata[k].word_2,
+			      WORD_COLUMN_3, childdata[k].word_3,
+			      WORD_COLUMN_4, childdata[k].word_4,
+			      -1);
+	}
+    }
+  
   gtk_main ();
-
+  
   return 0;
 }
diff --git a/tests/treestoretest.c b/tests/treestoretest.c
index 83adcd2d5f..9a0cf780d0 100644
--- a/tests/treestoretest.c
+++ b/tests/treestoretest.c
@@ -83,6 +83,25 @@ iter_insert (GtkWidget *button, GtkTreeView *tree_view)
 }
 
 static void
+iter_change (GtkWidget *button, GtkTreeView *tree_view)
+{
+  GtkWidget *entry;
+  GtkTreeIter selected;
+  GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
+
+  entry = gtk_object_get_user_data (GTK_OBJECT (button));
+  if (gtk_tree_selection_get_selected (gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view)),
+				       NULL, &selected))
+    {
+      gtk_tree_store_set (GTK_TREE_STORE (model),
+			  &selected,
+			  1,
+			  gtk_entry_get_text (GTK_ENTRY (entry)),
+			  -1);
+    }
+}
+
+static void
 iter_insert_before  (GtkWidget *button, GtkTreeView *tree_view)
 {
   GtkTreeIter iter;
@@ -281,7 +300,17 @@ make_window (gint view_type)
   gtk_signal_connect (GTK_OBJECT (button), "clicked", 
                       GTK_SIGNAL_FUNC (iter_insert), 
                       tree_view);
-
+  
+  button = gtk_button_new_with_label ("gtk_tree_store_set");
+  hbox = gtk_hbox_new (FALSE, 8);
+  entry = gtk_entry_new ();
+  gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
+  gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
+  gtk_box_pack_start (GTK_BOX (hbox), entry, FALSE, FALSE, 0);
+  gtk_object_set_user_data (GTK_OBJECT (button), entry);
+  gtk_signal_connect (GTK_OBJECT (button), "clicked",
+		      GTK_SIGNAL_FUNC (iter_change),
+		      tree_view);
   
   button = gtk_button_new_with_label ("gtk_tree_store_insert_before");
   gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);