[DllImport ("libgtk-win32-2.0-0.dll")]
static extern IntPtr gtk_message_dialog_new (IntPtr parent_window, DialogFlags flags, MessageType type, ButtonsType bt, string msg, params object [] args);

public MessageDialog (Gtk.Window parent_window, DialogFlags flags, MessageType type, ButtonsType bt, string msg)
{
	IntPtr p = (parent_window != null) ? parent_window.Handle : ((IntPtr) 0);

	Raw = gtk_message_dialog_new (p, flags, type, bt, msg, null);
}