GtkToggleToolButton A #GtkToolItem containing a toggle button. A #GtkToggleToolButton is a #GtkToolItem that contains a toggle button. Use gtk_toggle_tool_button_new() to create a new #GtkToggleToolButton. Use gtk_toggle_tool_button_new_from_stock() to create a new #GtkToggleToolButton containing a stock item. #GtkToolbar The toolbar widget #GtkToolButton The parent class of #GtkToggleToolButton. The properties "label_widget", "label", "icon_widget", and "stock_id" on #GtkToolButton determine the label and icon used on #GtkToggleToolButtons. #GtkSeparatorToolItem A subclass of #GtkToolItem that separates groups of items on a toolbar. The #GtkToggleToolButton struct contains only private data and should only be accessed through the functions described below. @toggletoolbutton: the object which received the signal. @Returns: @stock_id: @Returns: @button: @is_active: @button: @Returns: