Windows
Gtk.Window
— Toplevel which can contain other widgets
Gtk.Dialog
— Create popup windows
Gtk.MessageDialog
— A convenient message window
Gtk.AboutDialog
— Display information about an application
Gtk.Assistant
— A widget used to guide users through multi-step operations
Gtk.Invisible
— A widget which is not displayed
Gtk.OffscreenWindow
— A toplevel to manage offscreen rendering of child widgets
Gtk.WindowGroup
— Limit the effect of grabs