void AddItem(ActionMenuItem aitem, int pos)
{
Gtk.Table t = new Gtk.Table (1, 3, false);
aitem.Attach (t, 0, 0);
aitem.KeyPressEvent += OnItemKeyPress;
t.ShowAll ();
CustomMenuBarItem it = new CustomMenuBarItem ();
it.ActionMenuItem = aitem;
aitem.Bind (it);
it.Child = t;
it.ShowAll ();
Insert (it, pos);
}
internal void Bind (CustomMenuBarItem item)
{
// When embedding the action menu in a MenuBar,
// the parent menu item intercepts the mouse events,
// so those events must be manually bound here
menuBarItem = item;
item.ButtonPressEvent += OnMenuItemPress;
item.ButtonReleaseEvent += OnMemuItemRelease;
item.MotionNotifyEvent += OnMotionNotify;
}