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In addition to what VinExpert said a much easier way to read strings (just text data) is to use the CStdioFile class which is derived from CFile. This class is very easy to use and null terminates the strings. Also you read/write into a CString object and don't have to worry about allocating memory. ;-)<br />
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Try it.. Here a link to the documentation (being derived from CFile it's almost the same except that there is less work to do. &nbsp;<a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_MFC_CStdioFile.asp" rel="ugc">http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_MFC_CStdioFile.asp</a><br />
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My 2 cents...
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In addition to what VinExpert said a much easier way to read strings (just text data) is to use the CStdioFile class which is derived from CFile. This class is very easy to use and null terminates the strings. Also you read/write into a CString object and don't have to worry about allocating memory. ;-)

Try it.. Here a link to the documentation (being derived from CFile it's almost the same except that there is less work to do.  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_MFC_CStdioFile.asp [http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_MFC_CStdioFile.asp]

My 2 cents...

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In my programing,when I use CFile::Read(string,file-&gt;G<wbr />etLength()<wbr />)to read the file and display the string<br />
in a Edit Box <br />
however,sometimes at the end of the content ,there comes<br />
some unexpected characters,sometimes there is no this kind of char,<br />
could you tell me why and what shoul I do?<br />
<br />
thanx 
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In my programing,when I use CFile::Read(string,file->GetLength())to read the file and display the string
in a Edit Box 
however,sometimes at the end of the content ,there comes
some unexpected characters,sometimes there is no this kind of char,
could you tell me why and what shoul I do?

thanx 

question about File I/O

Kernel and system programming is the process of creating the software necessary for a computer or device to function and operate other programs. Some operating systems (such as Microsoft Windows) are proprietary, but others, such as the various Linux distributions, are open source.