// My callback procedure that writes the rich edit control contents

// to a file.

static DWORD CALLBACK

MyStreamInCallback(DWORD dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb)

{

  CFile* pFile = (CFile*) dwCookie;



  *pcb = pFile->Read(pbBuff, cb);



  return 0;

}



// The example code.

  // The pointer to my rich edit control.

  extern CRichEditCtrl* pmyRichEditCtrl;

  // The file from which to load the contents of the rich edit control.

  CFile cFile(TEXT("myfile.rtf"), CFile::modeRead);

  EDITSTREAM es;



  es.dwCookie = (DWORD) &cFile;

  es.pfnCallback = MyStreamInCallback;

  pmyRichEditCtrl->StreamIn(SF_RTF, es);