主题：通过vba可以查出来，连续合约是哪个具体的合约吗？

Function GetContractCode(sMarketCode,sStockPre)    '根据市场编码取得主力合约编码
 GetCAX" then sStockPre="AY"
 if sStockPre="SRX" then sStockPre="SRY"
  
 For j = 1 To 12
  if j<10 then
   m="0" & cstr(j)
  else
   m=cstr(j)
  end if 
  Stock=ucase(sStockPre & m)
  'application.MsgOut sMarketCode & "," & Stock
  on error resume next    
'  Set report1 = marketdata.GetReportData(Stock,sMarketCode)
'  if cdbl(report1.volume)>contractvolume then
'   contractvolume=cdbl(report1.volume)
'   ZhuLiCode = report1.Label
'  end if 
  if marketdata.IsExistStock(Stock,sMarketCode) then
   set report1=marketdata.GetReportData(Stock,sMarketCode)
   if report1.IsMainInstrument=1 then
    GetContractCode=Stock
    exit function
   end if 
  end if 
 Next
End Function

以上函数返回主力合约代码，调用方法是:aaa=GetContractCode("ZJ","IF00"),aaa就是IF对应的主力合约