- gtk_entry_set_text(GTK_ENTRY(dialog->discrete), "");
- gtk_widget_set_sensitive(dialog->low, FALSE);
- gtk_widget_set_sensitive(dialog->high, FALSE);
- gtk_widget_set_sensitive(dialog->discrete, FALSE);
+ gtk_entry_set_text(GTK_ENTRY(dialog->discrete), "");
+ gtk_widget_set_sensitive(dialog->low, FALSE);
+ gtk_widget_set_sensitive(dialog->high, FALSE);
+ gtk_widget_set_sensitive(dialog->discrete, FALSE);
+
+ gtk_widget_set_sensitive(GTK_WIDGET(dialog->button_range),
+ var_is_numeric (dialog->pv));