Add ComboBoxMap

tools/widgets/combo_box_map.vala

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2012-2016 Daniele Bartolini and individual contributors.
+ * License: https://github.com/taylor001/crown/blob/master/LICENSE-GPLv2
+ */
+
+using Gtk;
+
+namespace Crown
+{
+	/// <summary>
+	/// Map combo box.
+	/// </summary>
+	public class ComboBoxMap : Gtk.ComboBoxText
+	{
+		public ComboBoxMap()
+		{
+			this.scroll_event.connect(on_scroll);
+		}
+
+		private bool on_scroll(Gdk.EventScroll ev)
+		{
+			GLib.Signal.stop_emission_by_name(this, "scroll-event");
+			return false;
+		}
+	}
+}