gtk-sharp Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. System.Enum GLib.GType(typeof(Gtk.MessageTypeGType)) An enumeration used by Gtk.MessageDialog. This enumeration defines the type of message being displayed in the dialog. Field Gtk.MessageType A fatal error message. Field Gtk.MessageType An informational message. Field Gtk.MessageType Any other message. Field Gtk.MessageType A question requiring a choice. Field Gtk.MessageType A nonfatal warning message.