/// <summary> /// 删除全部消息历史 /// </summary> /// <param name="deleteSessions">是否删除所有会话列表项(即全部最近联系人)</param> /// <param name="action"></param> public static void ClearAll(bool deleteSessions, CommonOperationResultDelegate action) { var ptr = NimUtility.DelegateConverter.ConvertToIntPtr(action); MsglogNativeMethods.nim_msglog_delete_all_async(deleteSessions, null, NormalOperationCompleted, ptr); }