protected override bool OnExposeEvent(Gdk.EventExpose evnt)
{
if (base.IsDrawable)
{
Gdk.Color color = base.Style.Background(Gtk.StateType.Normal);
Gdk.GC gc = GtkHelper.GetDarkenedGC(base.GdkWindow, color, 3);
base.GdkWindow.DrawLine(gc,
Allocation.X,
Allocation.Y + Allocation.Height - 1,
Allocation.X + Allocation.Width,
Allocation.Y + Allocation.Height - 1);
}
return(base.OnExposeEvent(evnt));
}