请高手帮助，如何序列化？？

[ren20]

void CTempDlg::OnSave() //按钮函数
{
cnair.Serialize(ar); //在onsave中调用cnair的序列化函数
}

我打算在对话框里调用其他类的序列化函数，怎么调用呀？
象上面这样，ar从那里来？怎么写？

[ren20]

?

[zhq2000]

CFile * GetFile(LPCTSTR lpszFileName , UINT nOpenFlags, CFileException* pError )
{
try{
CFile *pFile = new CFile(lpszFileName , nOpenFlags);
return pFile;
}
catch(CFileException *e)
{
pError = e;
}

return NULL;
}

void ReleaseFile(CFile *pFile)
{
try{
delete pFile;
}
catch(...)
{
}
}





CFile* pFile = NULL;

pFile = GetFile(lpszPathName, CFile::modeCreate |
CFile::modeReadWrite | CFile::shareExclusive, &fe);

if (pFile == NULL)
{
CString str;
str.Format("Open %s failed!" , lpszFileName);
AfxMessageBox(str);

return FALSE;
}

CArchive saveArchive(pFile, CArchive::store | CArchive::bNoFlushOnDelete);
saveArchive.m_pDocument = this;
saveArchive.m_bForceFlat = FALSE;
TRY
{
CWaitCursor wait;
Serialize(saveArchive); // save me
saveArchive.Close();
ReleaseFile(pFile, FALSE);
}
CATCH_ALL(e)
{
ReleaseFile(pFile, TRUE);

TRY
{
CString str;
str.Format("Save %s failed!" , lpszFileName);
AfxMessageBox(str);

}
END_TRY
DELETE_EXCEPTION(e);
return FALSE;
}
END_CATCH_ALL

[ren20]

请高手简单讲解一下