scrolling many objects and situations in the bottom horizontal pane

contain.h

@@ -11,7 +11,7 @@
 #define H 960
 #define W_IMAGE 1920 - 320
 #define H_IMAGE 960 - 126
-#define H_STYLES_PANE 60
+#define H_STYLES_PANE 30
 
 void activate (GtkApplication *app, gpointer user_data);
 

display.c

@@ -112,23 +112,34 @@ GtkProgressBar *get_ELAPSED_TIME_ProgressBar(){ //  To rename : DO - UNDO - REDO
 
 static GtkBox *get_objects_box(){
   GtkBox *objects_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0));
+  GtkAdjustment *adjust = gtk_adjustment_new (0, 0, 255, 1, 0, 0);
+  if (0) for (int i = 0; i < 10; i++)
+    gtk_box_append (objects_box, gtk_scrollbar_new (GTK_ORIENTATION_VERTICAL, adjust));
+  char string[7];
+  for (int i = 0; i < 16; i++){
+    sprintf(string, "[%d]  ", i);
+    if (0) printf("%s\n", string);  //  répété deux fois !   pourquoi ?
+    gtk_box_append (objects_box, GTK_WIDGET (gtk_label_new (string)));
+  }
   gtk_box_append (objects_box, GTK_WIDGET (gtk_label_new ("   membrane     ")));
   gtk_box_append (objects_box, GTK_WIDGET (gtk_label_new ("   co-enzyme A     ")));
   gtk_box_append (objects_box, GTK_WIDGET (gtk_label_new ("   ribosome     ")));
-  gtk_box_append (objects_box, GTK_WIDGET (gtk_label_new ("   cytochrome C     ")));
   gtk_box_append (objects_box, GTK_WIDGET (gtk_label_new ("   ATP synthase     ")));
-  gtk_box_append (objects_box, GTK_WIDGET (gtk_label_new ("   chromosome     ")));
   return objects_box;
 }
 
 static GtkBox *get_situations_box(){
   GtkBox *situations_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0));
+  char string[7];
+  for (int i = 0; i < 64; i++){
+    sprintf(string, "[%d]  ", i);
+    if (0) printf("%s\n", string);  //  répété deux fois !   pourquoi ?
+    gtk_box_append (situations_box, GTK_WIDGET (gtk_label_new (string)));
+  }
   gtk_box_append (situations_box, GTK_WIDGET (gtk_label_new ("   transcription     ")));
-  gtk_box_append (situations_box, GTK_WIDGET (gtk_label_new ("   activation opéron lactose    ")));
-  gtk_box_append (situations_box, GTK_WIDGET (gtk_label_new ("   translation     ")));
   gtk_box_append (situations_box, GTK_WIDGET (gtk_label_new ("   transport Na/K     ")));
   gtk_box_append (situations_box, GTK_WIDGET (gtk_label_new ("   ubiquitination     ")));
-  gtk_box_append (situations_box, GTK_WIDGET (gtk_label_new ("   rotation du moteur flagellaire     ")));
+  gtk_box_append (situations_box, GTK_WIDGET (gtk_label_new ("   rotation moteur flagellaire     ")));
   return situations_box;
 }