C++ 逐行读取txt文件

aa.exe
bb.txt
cc.dat

CFile file(_T("test.txt"), CFile::modeRead);
char* pBuf;
DWORD dwFileLen;
dwFileLen = file.GetLength();
pBuf = new char[dwFileLen + 1];
pBuf[dwFileLen] = 0;
file.Read(pBuf, dwFileLen);
file.Close();
CString str(pBuf);
str.Replace(_T("\r\n"), _T("\\NADAFlash\\"));
str = _T("\\NADAFlash\\") + str;
MessageBox(str);