+ Gtk::CheckButton flat_buttons;
+ Gtk::CheckButton region_color_button;
+ Gtk::CheckButton show_clipping_button;
+ Gtk::HScale waveform_gradient_depth;
+ Gtk::Label waveform_gradient_depth_label;
+ Gtk::HScale timeline_item_gradient_depth;
+ Gtk::Label timeline_item_gradient_depth_label;
+ Gtk::CheckButton all_dialogs;
+ Gtk::CheckButton gradient_waveforms;
+ Gtk::Label icon_set_label;
+ Gtk::ComboBoxText icon_set_dropdown;