diff --git a/callback.c b/callback.c
index ba35ddb..04b4d24 100644
--- a/callback.c
+++ b/callback.c
@@ -202,23 +202,24 @@ void on_open_STATE (GtkWidget *btt_open_STATE, gpointer user_data) {
 
 void on_open_RULES (GtkWidget *btt_open_RULES, gpointer data) {
   if (0) printf("on_open_RULES   status = %d\n", get_status ());
-  window_main_child (main_window, RULES);
+  if (! gtk_check_button_get_active (GTK_CHECK_BUTTON (get_GtkButton ("rules")))) window_main_child (main_window, RULES);
 }// SWITCH_TO (RULES);}
 
 void on_open_DATA  (GtkWidget *btt_open_DATA,  gpointer data) {
   if (0) printf("on_open_DATA    status = %d\n", get_status ());
-  window_main_child (main_window, DATA);
+  if (! gtk_check_button_get_active (GTK_CHECK_BUTTON (get_GtkButton ("data analysis")))) window_main_child (main_window, DATA);
 }// SWITCH_TO (DATA);}
 
 
 
 
 
-void on_toggle_STATE_RULES_DATA (char *source, gpointer user_data) {
+void on_toggle_STATE_RULES_DATA (GtkWidget *btt, gpointer user_data) {
   //  https://docs.gtk.org/gtk4/class.ToggleButton.html  <  f..k !   bad code ++
   // g_print ("Toggle button [%s] is active: %s\n", gtk_button_get_label (GTK_BUTTON (source)), gtk_toggle_button_get_active (source) ? "Yes" : "No");
 
-  printf("gtk_check_button_get_active >  after =  %d, %d, %d     from callback : on_toggle_STATE_RULES_DATA()\n",\
+  char *source = "";
+  if (0) printf("gtk_check_button_get_active >           %d, %d, %d   < from callback : on_toggle_STATE_RULES_DATA()\n",\
         gtk_check_button_get_active (GTK_CHECK_BUTTON (get_GtkButton (source))),
         gtk_check_button_get_active (GTK_CHECK_BUTTON (get_GtkButton (source))),
         gtk_check_button_get_active (GTK_CHECK_BUTTON (get_GtkButton (source))));
diff --git a/callback.h b/callback.h
index dba7b27..3516c50 100644
--- a/callback.h
+++ b/callback.h
@@ -24,4 +24,4 @@ void on_open_DATA  (GtkWidget *btt_open_DATA,  gpointer data);
 void on_SAVE_CURRENT_MODEL_BEFORE_EDITING (GtkWidget *btt_SAVE_CURRENT_MODEL, gpointer data);
 void on_DISCARD_CURRENT_MODEL_AND_START_EDITING (GtkWidget *btt_SAVE_CURRENT_MODEL, gpointer data);
 void on_WRITE_CURRENT_MODEL (GtkWidget *btt_WRITE_CURRENT_MODEL, gpointer data);
-void on_toggle_STATE_RULES_DATA (char *source, gpointer user_data);
+void on_toggle_STATE_RULES_DATA (GtkWidget *btt, gpointer user_data);
diff --git a/contain.c b/contain.c
index caa947a..ac29708 100644
--- a/contain.c
+++ b/contain.c
@@ -198,14 +198,17 @@ void window_header_bar (GtkWindow *window, char *title){
 
   btt_open_STATE = GTK_BUTTON (gtk_check_button_new_with_label ("state"));
   g_signal_connect (btt_open_STATE, "toggled", G_CALLBACK (on_open_STATE), no_local_data);
+  g_signal_connect (btt_open_STATE, "toggled", G_CALLBACK (on_toggle_STATE_RULES_DATA), no_local_data);
   gtk_check_button_set_group (GTK_CHECK_BUTTON (btt_open_STATE), group_STATE_RULES_DATA);
 
   btt_open_RULES = GTK_BUTTON (gtk_check_button_new_with_label ("rules"));
   g_signal_connect (btt_open_RULES, "toggled", G_CALLBACK (on_open_RULES), no_local_data);
+  g_signal_connect (btt_open_RULES, "toggled", G_CALLBACK (on_toggle_STATE_RULES_DATA), no_local_data);
   gtk_check_button_set_group (GTK_CHECK_BUTTON (btt_open_RULES), group_STATE_RULES_DATA);
 
   btt_open_DATA  = GTK_BUTTON (gtk_check_button_new_with_label ("data analysis"));
   g_signal_connect (btt_open_DATA,  "toggled", G_CALLBACK (on_open_DATA),  no_local_data);
+  g_signal_connect (btt_open_DATA,  "toggled", G_CALLBACK (on_toggle_STATE_RULES_DATA), no_local_data);
   gtk_check_button_set_group (GTK_CHECK_BUTTON (btt_open_DATA), group_STATE_RULES_DATA);
 
 //  gtk_check_button_set_label (GTK_CHECK_BUTTON (btt_open_DATA), "any label");
@@ -215,9 +218,9 @@ void window_header_bar (GtkWindow *window, char *title){
           gtk_check_button_get_label (GTK_CHECK_BUTTON (btt_open_DATA)));
 
   if (1) printf("gtk_check_button_get_active >  before = %d, %d, %d\n",\
-          gtk_check_button_get_active (GTK_CHECK_BUTTON (btt_open_STATE)),
-          gtk_check_button_get_active (GTK_CHECK_BUTTON (btt_open_RULES)),
-          gtk_check_button_get_active (GTK_CHECK_BUTTON (btt_open_DATA)));
+          gtk_check_button_get_active (GTK_CHECK_BUTTON (get_GtkButton ("state"))),
+          gtk_check_button_get_active (GTK_CHECK_BUTTON (get_GtkButton ("rules"))),
+          gtk_check_button_get_active (GTK_CHECK_BUTTON (get_GtkButton ("data analysis"))));
 
 //  gtk_check_button_set_active (GTK_CHECK_BUTTON (get_GtkButton ("state")), TRUE);
 
@@ -226,7 +229,7 @@ void window_header_bar (GtkWindow *window, char *title){
           gtk_check_button_get_active (GTK_CHECK_BUTTON (get_GtkButton ("rules"))), //  (GTK_CHECK_BUTTON (btt_open_RULES)),
           gtk_check_button_get_active (GTK_CHECK_BUTTON (get_GtkButton ("data analysis")))); //  (GTK_CHECK_BUTTON (btt_open_DATA)));
 
-  on_toggle_STATE_RULES_DATA ("state", NULL) ;
+//  on_toggle_STATE_RULES_DATA (, NULL) ;
 
   gtk_header_bar_pack_start (GTK_HEADER_BAR (header_bar), GTK_WIDGET (btt_XOR_EXEC_EDIT));
   gtk_header_bar_pack_start (GTK_HEADER_BAR (header_bar), GTK_WIDGET (btt_MODEL_RUN_STOP)); //  <<  pas ici !  TODO