Signal which allows you to change how the scale value is displayed. Connect a signal handler which returns an allocated string representing Here's an example signal handler which displays a value 1.0 as with "-->1.0<--". |[ static gchar* format_value_callback (GtkScale *scale, gdouble value) { return g_strdup_printf ("-->%0.*g<--", gtk_scale_get_digits (scale), value); } ]|