diff --git a/include/signal.h b/include/signal.h
index 103c4eb..5ad03e7 100644
--- a/include/signal.h
+++ b/include/signal.h
@@ -128,7 +128,7 @@ void on_resetting_XYZ_in_state_page ();
 
 void on_clicked_topbar_right_home (GtkWidget *btt_reset, gpointer data);
 void on_clicked_topbar_right_search (GtkWidget *btt_menu, gpointer list_box);
-void on_clicked_topbar_right_measure (GtkWidget *btt_measure, gpointer data);
+void on_topbar_right_measure_clicked (GtkWidget *btt_measure, gpointer data);
 
 
 
diff --git a/src/signal.c b/src/signal.c
index 356aa27..24d13d9 100644
--- a/src/signal.c
+++ b/src/signal.c
@@ -423,18 +423,22 @@ void on_situations_box_do_reset (GtkWidget *btt_reset, GtkScrollbar *reset_scrol
 /*                               M E A S U R E S                              */
 /******************************************************************************/
 
-void on_clicked_topbar_right_measure (GtkWidget *btt, gpointer data)
+void on_topbar_right_measure_clicked (GtkWidget *btt, gpointer button_icon_name)
 {
-    fsm_journal_event (DEBUG, BUTTON, "signal", "clicked topbar right measure()", "🧭️");
-//  fsm_measures_sorted_list_do something ();
+//  ici, il faudrait surtout dire que: widget_get_measure_page
+//               devient un enfant de: widget_get_main_window.
+    fsm_journal_event (DEBUG, BUTTON, "signal", "topbar right measure()",
+                       concat ("clicked;   icon = ", button_icon_name, NULL));
+//  fsm_measures_sorted_list_do something ();    TODO
+//  ! WARNING !  ce qui suit n'est qu'une maquette:   (... delenda est !)
+//  la 'logique' qui va des mesures aux résultats doit changer de forme    TODO
     gtk_window_set_child (GTK_WINDOW (widget_get_main_window ()),
                           GTK_WIDGET (widget_get_measure_page()));
 }
 
-void on_start_new_measure (GtkWidget *btt, gpointer data)
+void on_start_new_measure (GtkWidget *btt, gpointer btt_label)
 {
-    fsm_journal_event (DEBUG, BUTTON, "signal", "start a new measure()",
-                       gtk_button_get_label (GTK_BUTTON (btt))); // gtk_label_get_text () ? TODO
+    fsm_journal_event (DEBUG, BUTTON, "signal", "start a new measure()", btt_label);
     gtk_window_set_child (GTK_WINDOW (widget_get_main_window ()),
                           GTK_WIDGET (widget_measure_do_select_rules_first()));
 }
diff --git a/src/widget/measure/dispatch.c b/src/widget/measure/dispatch.c
index a19b105..ad4aa10 100644
--- a/src/widget/measure/dispatch.c
+++ b/src/widget/measure/dispatch.c
@@ -24,6 +24,7 @@
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 
+#include "../../../include/util.h"
 #include "../../../include/base.h"
 #include "../../../include/signal.h"
 #include "../../../include/widget.h"
@@ -295,21 +296,17 @@ void *widget_get_measure_page()
 {
     measure_page = GTK_BOX (gtk_box_new (GTK_ORIENTATION_VERTICAL, 2));
     edit_a_new_measure_box = GTK_BOX (gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2));
-    caliper = gtk_picture_new_for_filename
-        ("./data/stamp/measure caliper icon.png");
-    btt_edit_a_new_measure = gtk_toggle_button_new_with_label ("edit a new measure");
-
-    printf("gtk_button_get_label (btt_edit_a_new_measure) = %s     <---\
-    \npourquoi est-ce que je n'arrive pas à afficher ce label dans le journal ? \n",
-           gtk_button_get_label (GTK_BUTTON (btt_edit_a_new_measure)));
-    //  voir signal  >  void on_start_new_measure (GtkWidget *btt, gpointer data))
-
+    caliper = gtk_picture_new_for_filename ("./data/stamp/measure caliper icon.png"); // TODO icon
+    char *btt_lab = "edit a new measure";
+    btt_edit_a_new_measure = gtk_toggle_button_new_with_label (btt_lab);
     g_signal_connect (btt_edit_a_new_measure, "toggled",
-                      G_CALLBACK (on_start_new_measure), NULL);
-
+                      G_CALLBACK (on_start_new_measure),
+                      concat ("label = ", btt_lab, "  (+/- caliper icon)", NULL));
     gtk_box_append (edit_a_new_measure_box, GTK_WIDGET (caliper));
     gtk_box_append (edit_a_new_measure_box, GTK_WIDGET (btt_edit_a_new_measure));
     gtk_box_append (measure_page, GTK_WIDGET (edit_a_new_measure_box));
+    fsm_journal_event (DEBUG, BUTTON, "widget/measure/dispatch", "widget_get_measure_page()",
+                       concat ("creates: ", btt_lab, "  in: measure_page", NULL));
 
     return measure_page;
  }
diff --git a/src/widget/topbar/right.c b/src/widget/topbar/right.c
index ebfdcb9..3cff98c 100644
--- a/src/widget/topbar/right.c
+++ b/src/widget/topbar/right.c
@@ -62,7 +62,8 @@ static void display_widgets_at_the_right_side (GtkWidget *header_bar)
 
     GtkButton *measure = GTK_BUTTON (gtk_button_new ());
     gtk_button_set_icon_name (measure, "color-select-symbolic");
-    g_signal_connect (measure, "clicked", G_CALLBACK (on_clicked_topbar_right_measure), no_local_data);
+    g_signal_connect (measure, "clicked", G_CALLBACK (on_topbar_right_measure_clicked),
+                      "color-select-symbolic");
     gtk_header_bar_pack_end (GTK_HEADER_BAR (header_bar), GTK_WIDGET (measure));
 
     list_box = gtk_list_box_new();