VC++实现CStdioFile写入及读取文件并自动换行的方法

LPTSTR filter=_T("Playlist Files(.txt)|*.txt|");
CString tempPath;
CFileDialog saveFileDlg(FALSE,NULL,NULL,OFN_PATHMUSTEXIST,filter,NULL,0,TRUE);
saveFileDlg.m_ofn.lpstrInitialDir=_T("E:\\media"); //设置默认目录
if(saveFileDlg.DoModal()==IDOK)
{
tempPath=saveFileDlg.GetPathName();
}
CStdioFile listfile;
tempPath+=_T(".txt");//定义读取txt文本文件
listfile.Open(tempPath,CFile::modeCreate|CFile::modeReadWrite|CFile::typeText);
for (int i=0;i<m_ctrlPlayList.GetCount();i++)
{
CString temp;
m_ctrlPlayList.GetText(i,temp);
temp+="\n";
listfile.WriteString(temp);
}