self.listTools = Gtk.Toolbar()
self.listTools.set_property('icon_size', 1)
context = self.listTools.get_style_context()
context.add_class('inline-toolbar')
self.addButton = Gtk.ToolButton()
self.addButton.set_property('visible', True)
self.addButton.set_property('can_focus', False)
self.addButton.set_property('use_action_appearance', False)
self.addButton.set_property('use_underline', False)
self.addButton.set_property('icon_name', 'list-add-symbolic')
self.listTools.add(self.addButton)
Кнопки дерева Python GTK3