Some question about CString,Unicode,and TCHAR *

>cFileName;

Hi~I'm planning to make a smiple program to upload file,but I've
traped by a strange problem,here is a chip of my program:
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LPCTSTR lpszMyFilePath =COptions::StoragePath+_T("\\test\\")+pWData-
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LPCTSTR lpszPeerFilePath = pWData->cFileName;
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UINT nMyTaskID = 0;
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nMyTaskID = WRMCC_RequestUploadFile (/*_T("\\´æ´¢¿¨\\test\
\20080618.dat")*/lpszMyFilePath,lpszPeerFilePath, FTNOTIFY_Callback );
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==============
When I was using _T("\\´æ´¢¿¨\\test\\20080618.dat") as LParm,the program
work successfully.but when I use lpszMyFilePath,which i defined myself
above,the server said "File not exist"
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P.S.
COptions::StoragePath is a instance of CString
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cFileName is a name of TCHAR[ ] array
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and the type of upload function is:
UINT WRMCC_RequestUploadFile ( LPCTSTR lpszMyFilePath, LPCTSTR
lpszPeerFilePath=NULL, FUNC_FTNOTIFY_Callback
Proc_FTNOTIFY_Callback=NULL, BOOL bForceRetransmit=FALSE );

LPCTSTR is only a pointer which point to the temp string,
COptions::StoragePath+_T("\\test\\")+pWData-cFileName; will construct
a temp CString ,but after that it will be destroyed, and the pointer
will point to a invalid memory.
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by the way, please do not post Chinese charator in your question, here
is a international mailist, so many people can not read in Chinese.
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On Jul 31, 11:16 am, "Jason .Y" <lin.yang.ja...@gmail.comwrote:
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