关于不读取相同消息的问题，我是初学者，请高手们帮帮忙！

Question

我在函数ReadOrderRecord中读取一个.DBD文件，文件内容很简单，如下：
000001000100          J041118AB4398  1    O
000002000100          J041118AB4398  1    O
000003000100          J041216BB4300  1    O
000001000100          J041118AB4398  1    O
000002000100          J041118AB4398  1    O
000003000100          J041118AS4398  1    O
000004000100          J041118BB4302  1    O
000005000100          J041118BS4302  1    O
000006000100          J041216BS4300  1    O
000007000100          J041216BB4300  1    O
其中，前六行是两两重复的，我想在读取时遇到重复的就不读，遇到不重复的继续读，不知道应该在源程序中怎么修改，源代码如下：
BOOL CMTIClient::ReadOrderRecord(QueryOrderRequestPacket **ppRequest, int &iCount)
{
CString strFileName;
strFileName.Format("%s.DRD", m_strTraderID);
CStdioFile fRecord;
if( fRecord.Open(strFileName,
CFile::modeNoTruncate
| CFile::modeRead
| CFile::typeText
| CFile::shareExclusive)==0 )
{
//AfxMessageBox("打开文件失败");
return FALSE;
} vector<QueryOrderRequestPacket> vOrderRequest;
CString strBuff;
while ( fRecord.ReadString(strBuff) )
{
QueryOrderRequestPacket order;
memset(&order, 0, sizeof(QueryOrderRequestPacket)); strcpy(order.szTraderID_, m_strTraderID); int iOffset = 0;
strcpy(order.szOrderNo, strBuff.Mid(iOffset, SIZE_RECORD_ORDERNO));
iOffset += SIZE_RECORD_ORDERNO; strcpy(order.szCustomerID_, strBuff.Mid(iOffset, TRADER_ID_LEN));
iOffset += TRADER_ID_LEN; strcpy(order.szMarket, strBuff.Mid(iOffset, SIZE_RECORD_MARKETID));
iOffset += SIZE_RECORD_MARKETID; strcpy(order.szCommodityID, strBuff.Mid(iOffset, SIZE_RECORD_COMMODITYID));
iOffset += SIZE_RECORD_COMMODITYID; order.cBuySell = strBuff.GetAt(iOffset);
iOffset += SIZE_RECORD_BUYSELL; vOrderRequest.push_back(order);
}
fRecord.Close(); iCount = vOrderRequest.size();
*ppRequest = new QueryOrderRequestPacket[iCount];
for (int i=0; i<iCount; i++)
{
memcpy(*ppRequest+i, &vOrderRequest.at(i), sizeof(QueryOrderRequestPacket));
} TRACE1("读到%d条记录\n",iCount); return TRUE;
}
请高手教教我，详细点儿啊，我是新手！！

Answer 1

BOOL CMTIClient::ReadOrderRecord(QueryOrderRequestPacket **ppRequest, int &iCount)
{
CString strFileName;
strFileName.Format("%s.DRD", m_strTraderID);
CStdioFile fRecord;
if( fRecord.Open(strFileName,
CFile::modeNoTruncate
| CFile::modeRead
| CFile::typeText
| CFile::shareExclusive)==0 )
{
//AfxMessageBox("打开文件失败");
return FALSE;
} vector<QueryOrderRequestPacket> vOrderRequest;
CString strBuff;
//修改处
         CPtrArray  strList;
         bool Tag=false;
while ( fRecord.ReadString(strBuff) )
{//修改处
              for(int i=0;i<strList.GetSize();i++)
            {
                if(strcmp(strBuff,strList.GetAt(i))==0)
                Tag=true;
             }
              if(Tag)
              {
                  Tag=false;
                  continue;
               }
______________________________________________
QueryOrderRequestPacket order;
memset(&order, 0, sizeof(QueryOrderRequestPacket)); strcpy(order.szTraderID_, m_strTraderID); int iOffset = 0;
strcpy(order.szOrderNo, strBuff.Mid(iOffset, SIZE_RECORD_ORDERNO));
iOffset += SIZE_RECORD_ORDERNO; strcpy(order.szCustomerID_, strBuff.Mid(iOffset, TRADER_ID_LEN));
iOffset += TRADER_ID_LEN; strcpy(order.szMarket, strBuff.Mid(iOffset, SIZE_RECORD_MARKETID));
iOffset += SIZE_RECORD_MARKETID; strcpy(order.szCommodityID, strBuff.Mid(iOffset, SIZE_RECORD_COMMODITYID));
iOffset += SIZE_RECORD_COMMODITYID; order.cBuySell = strBuff.GetAt(iOffset);
iOffset += SIZE_RECORD_BUYSELL; vOrderRequest.push_back(order);
}
fRecord.Close(); iCount = vOrderRequest.size();
*ppRequest = new QueryOrderRequestPacket[iCount];
for (int i=0; i<iCount; i++)
{
memcpy(*ppRequest+i, &vOrderRequest.at(i), sizeof(QueryOrderRequestPacket));
} TRACE1("读到%d条记录\n",iCount); return TRUE;
}

Answer 2

不好意思，刚才写少了一句
BOOL CMTIClient::ReadOrderRecord(QueryOrderRequestPacket **ppRequest, int &iCount)
{
CString strFileName;
strFileName.Format("%s.DRD", m_strTraderID);
CStdioFile fRecord;
if( fRecord.Open(strFileName,
CFile::modeNoTruncate
| CFile::modeRead
| CFile::typeText
| CFile::shareExclusive)==0 )
{
//AfxMessageBox("打开文件失败");
return FALSE;
} vector<QueryOrderRequestPacket> vOrderRequest;
CString strBuff;
//修改处
         CPtrArray  strList;
         bool Tag=false;
while ( fRecord.ReadString(strBuff) )
{//修改处
              for(int i=0;i<strList.GetSize();i++)
            {
                if(strcmp(strBuff,strList.GetAt(i))==0)
                Tag=true;
             }
              if(Tag)
              {
                  Tag=false;
                  continue;
               }
                   strList.Add(strBuff);
______________________________________________
QueryOrderRequestPacket order;
memset(&order, 0, sizeof(QueryOrderRequestPacket)); strcpy(order.szTraderID_, m_strTraderID); int iOffset = 0;
strcpy(order.szOrderNo, strBuff.Mid(iOffset, SIZE_RECORD_ORDERNO));
iOffset += SIZE_RECORD_ORDERNO; strcpy(order.szCustomerID_, strBuff.Mid(iOffset, TRADER_ID_LEN));
iOffset += TRADER_ID_LEN; strcpy(order.szMarket, strBuff.Mid(iOffset, SIZE_RECORD_MARKETID));
iOffset += SIZE_RECORD_MARKETID; strcpy(order.szCommodityID, strBuff.Mid(iOffset, SIZE_RECORD_COMMODITYID));
iOffset += SIZE_RECORD_COMMODITYID; order.cBuySell = strBuff.GetAt(iOffset);
iOffset += SIZE_RECORD_BUYSELL; vOrderRequest.push_back(order);
}
fRecord.Close(); iCount = vOrderRequest.size();
*ppRequest = new QueryOrderRequestPacket[iCount];
for (int i=0; i<iCount; i++)
{
memcpy(*ppRequest+i, &vOrderRequest.at(i), sizeof(QueryOrderRequestPacket));
} TRACE1("读到%d条记录\n",iCount); return TRUE;
}

Answer 3

我编译了下，出现两个错误：
1.error C2664: 'strcmp' : cannot convert parameter 2 from 'void *' to 'const char *'
Conversion from 'void*' to pointer to non-'void' requires an explicit cast
错误指向语句：
if(strcmp(strBuff,strList.GetAt(i))==0)
2.error C2664: 'Add' : cannot convert parameter 1 from 'class CString' to 'void *'
No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
错误指向语句：
strList.Add(strBuff);请问现在应该怎么改？谢谢

Answer 4

CPtrArray  strList;=>
改成CStringArray