BOOL QQwry::OpenQQwry(LPCTSTR lpFileName)
{
BOOL bReturn = FALSE;
//
HANDLE hSrcFile = CreateFile(lpFileName,GENERIC_READ,FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
//
if(hSrcFile)
{
//Get file size
DWORD dwNumberOfBytesToRead = SetFilePointer(hSrcFile,0,NULL,FILE_END);
//reset to begin for data reading
SetFilePointer(hSrcFile,0,NULL,FILE_BEGIN);
//would not be failed in win32?
m_pDataBuffer = new BYTE[dwNumberOfBytesToRead + 1];
if(m_pDataBuffer)
{
//
DWORD dwReaded;
//
if(ReadFile(hSrcFile,m_pDataBuffer,dwNumberOfBytesToRead,&dwReaded,NULL))
{
//calculate the ip information record count
DWORD *pIntData = (DWORD *)m_pDataBuffer;
//Start position of record infor in file
DWORD nBuffer_0 = *pIntData;
//End position of record infor in file
DWORD nBuffer_4 = *(pIntData + 1);
nBuffer_4 -= nBuffer_0;
//IP record count
m_dwRecordCount = nBuffer_4 / 7;
int nsuiv = nBuffer_4 % 7;
//must be integral info struct,7 bytes
if(nsuiv == 0)
{
m_bInit = TRUE;
bReturn = m_bInit;
}
}
}
//close IP data file
CloseHandle(hSrcFile);
}
if(!m_bInit)
{
//Verify the null buffer if we got some error
CloseQQwry();
}
return bReturn;
}
NL_QQwry::~NL_QQwry()
{
CloseQQwry();
}
//析构函数
QQwry::~QQwry()
{
//
CloseQQwry();
}
SEU_QQwry::~SEU_QQwry()
{
CloseQQwry();
}
