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Copying files in an MFC app

Posted on 1999-01-23
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Last Modified: 2013-11-20
I need a function in my MFC app to copy files like DOS copy.
It has to create files that are identical in size and time/date. The function I came up with works fine under NT and 98 on my machine, but numerous other people have ran it under 98/95 and received Illegal Operations somewhere around the actual copying stage (their remote with no code/debugger). They only get this when the dir and files already exist. When I take the whole CFileStatus section out, they have no problems (except the timestamp is wrong).
So, anyone know how I can achieve this seemingly simple operation without errors?

void CCopy::Copy(char *in, char *out)
{      
      CFile infile,outfile;
      CFileException e;
      CString Temp;

      if(!infile.Open(in, CFile::modeRead | CFile::typeBinary, &e )) {
            Temp.Format("File could not be opened %s",e.m_cause);
            AfxMessageBox(Temp);
            return; }

      if(!outfile.Open(out, CFile::modeCreate | CFile::modeWrite | CFile::typeBinary, &e )) {
            Temp.Format("File could not be opened %s",e.m_cause);
            AfxMessageBox(Temp);
            return; }

      unsigned int bytes;
      unsigned char buff[4096];

      while((bytes=infile.Read(buff,4096))>0)
            outfile.Write(buff,bytes);

      infile.Close();
      outfile.Close();

      CFileStatus status;

      CFile::GetStatus(in,status);
      
      if(CFile::GetStatus(in,status))
            CFile::SetStatus(out,status);

      return;
}
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Question by:forloop
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2 Comments
 
LVL 13

Accepted Solution

by:
Epsylon earned 400 total points
ID: 1328221
Use CopyFile API function from winbase.h

BOOL CopyFile(
    LPCTSTR lpExistingFileName,      // pointer to name of an existing file
    LPCTSTR lpNewFileName,      // pointer to filename to copy to
    BOOL bFailIfExists       // flag for operation if file exists
   );      

0
 

Author Comment

by:forloop
ID: 1328222
Thanks, I found the problem with my function to be that the files in the destination folder were read-only. This because they were being copied from a cd-rom. Anyway, thatnks for the API function, it'll make my code better.
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