protected virtual void RenderPlaceholderText(object o, Gtk.ExposeEventArgs args)
{
var w = TextView.GetWindow(Gtk.TextWindowType.Text);
if (!string.IsNullOrEmpty(PlaceholderText) && string.IsNullOrEmpty(Text) && args.Event.Window == w)
{
Util.RenderPlaceholderText(TextView, args, PlaceholderText, ref layout);
}
}