/// <summary> /// 更新本地扩展字段内容 /// </summary> /// <param name="msgId">消息Id</param> /// <param name="localExt">消息本地扩展字段内容</param> /// <param name="cb">操作结果的回调函数</param> public static void UpdateLocalExt(string msgId, string localExt, UpdateLocalExtDelegate cb) { var ptr = NimUtility.DelegateConverter.ConvertToIntPtr(cb); MsglogNativeMethods.nim_msglog_update_localext_async(msgId, localExt, null, OnUpdateLocalExtCompleted, ptr); }