+ /* all transport buttons should be the same size vertically and
+ * horizontally
+ */
+
+ Glib::RefPtr<SizeGroup> transport_button_size_group = SizeGroup::create (SIZE_GROUP_BOTH);
+ transport_button_size_group->add_widget (goto_start_button);
+ transport_button_size_group->add_widget (goto_end_button);
+ transport_button_size_group->add_widget (auto_loop_button);
+ transport_button_size_group->add_widget (rec_button);
+ transport_button_size_group->add_widget (play_selection_button);
+ transport_button_size_group->add_widget (roll_button);
+ transport_button_size_group->add_widget (stop_button);
+
+ HBox* tbox1 = manage (new HBox);
+ HBox* tbox2 = manage (new HBox);
+ HBox* tbox3 = manage (new HBox);