函数
STDMETHOD(com_ar_query_raw_records_number)(
LONGnTagID,
LONGnStartSec,
LONGnStartMSec,
LONGnEndSec,
LONGnEndMSec,
VARIANT* pRecNum,
LONG* nRetErr
);
参数
[in]LONG nTagID, TagID
[in]LONG nStartSec,查询的起始时间戳,秒。
[in]LONG nStartMSec, 查询的起始时间戳,毫秒。
[in]LONG nEndSec, 查询的结束时间戳,秒。
[in]LONG nEndMSec, 查询的结束时间戳,毫秒。
[out]VARIANT* pRecNum, 原始记录条数,pRecNum->vt = VT_I4
[out,retval]LONG* nRetErr,返回值
返回值
成功,返回RD_SUCCESS。失败返回其它错误码,见error_code.h
说明
该接口用来查询某一Tag指定时间段内的原始记录条数。
举例
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Set objArray= CreateObject("hdCOMInterface.hdCOMClass.1")
Dim ip,port,bakip,bakport,timeout ip= "127.0.0.1" port= 5678 bakip = "1.2.3.4" bakport = 1234 timeout= 3
Dim ret objArray.com_nt_connect ip,port,bakip,bakport,timeout
Dim id,recnum id=5 recnum=CLng(3)
Dim nStartSec,nStartMsec,nEndSec,nEndMsec,result nStartSec = CLng(1378876138) nStartMsec = CLng(0) nEndSec = CLng(1378879738) nEndMsec = CLng(0)
result = CLng(objArray.com_ar_query_raw_records_number (id,nStartSec,nStartMsec,nEndSec,nEndMsec,recnum))
Msgbox "com_ar_query_raw_records_number错误码是:" &result
if result=0 then
Dim x0,shownum shownum = "调用后RecNum:" &recnum MsgBox shownum
end if objArray.com_nt_disconnect
Set objArray= nothing |
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