--- /dev/null
+/*
+ * Copyright (C) 2010 Collabora Ltd.
+ *
+ * This library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ * Travis Reitter <travis.reitter@collabora.co.uk>
+ */
+
+using GLib;
+
+namespace Folks
+{
+ /**
+ * A 'boolean' type that has a distinct 'unset' state.
+ */
+ public static enum MaybeBool
+ {
+ /* This value is explicitly unset. */
+ UNSET = 0,
+ /* False (this value was set from its default of UNSET). */
+ FALSE = 1,
+ /* True (this value was set from its default of UNSET). */
+ TRUE = 2,
+ }
+}