private static extern int SHNotificationUpdate(SHNUM grnumUpdateMask, ref SHNOTIFICATIONDATA shinfo);
private static extern int SHNotificationUpdate(SHNUM grnumUpdateMask, ref SHNOTIFICATIONDATA shinfo);
private static extern int SHNotificationUpdate(SHNUM grnumUpdateMask, ref SHNOTIFICATIONDATA shinfo);
private static extern int SHNotificationUpdate(SHNUM grnumUpdateMask, ref SHNOTIFICATIONDATA shinfo);