MoveFileEx Help!

[EzehM]

I have a piece of code that renames a file from A.ACK.tmp to A.ACK in the same directory (C:\abc). Meanwhile there is another process that polls C:\abc, looking for files with a .ACK extension. Once it sees such a file, it moves it to folder D:\ABC.

To rename the file I do the following

if ( !::MoveFileEx(tmpRnFile, RenamedFileName,
MOVEFILE_COPY_ALLOWED | MOVEFILE_REPLACE_EXISTING | MOVEFILE_WRITE_THROUGH) )
{
LogEvent(EVMSG_SENT_FAILED, tmpRnFile, RenamedFileName, GetLastErrorString() );
return EVMSG_SENT_FAILED;
}

Where tmpRnFile = C:\abc\A.ACK.tmp and RenamedFileName = c:\abc\A.ACK

The problem I have is that MoveFileEx returns a nonzero value - GetLastError returns 0x2: The system cannot find the file specified.

Please can anyone help? How does a move process work in NT, and can another process move or delete a file during the rename process?

What other rename method can I use to ensure that I dont get this problem.

Thanks
Milton

 

[MKuiper]

From the MSDN Library:

(MoveFileEx)
Return Values
If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.
<end MSDN Library>

So the fact MoveFileEx returns nonzero means it was successful. You have no problem !
The GetLastError value is probably from a previous call to another function. You should only call GetLastError after a function returning a failure, or when the MSDN library tells you to do so when a function was successful.


Marcel