CFile::GetLength

현재 논리 파일의 바이트 길이 가져옵니다.

virtual ULONGLONG GetLength( ) const;

반환 값

파일의 길이 지정 합니다.

예제

CFile* pFile = NULL;
// Constructing a CFile object with this override may throw 
// a CFile exception, and won't throw any other exceptions. 
// Calling CString::Format() may throw a CMemoryException, 
// so we have a catch block for such exceptions, too. Any 
// other exception types this function throws will be 
// routed to the calling function. 
try
{
   pFile = new CFile(_T("C:\\WINDOWS\\SYSTEM.INI"),
      CFile::modeRead | CFile::shareDenyNone);
   ULONGLONG dwLength = pFile->GetLength();
   CString str;
   str.Format(_T("Your SYSTEM.INI file is %I64u bytes long."), dwLength);
   AfxMessageBox(str);
}
catch (CFileException* pEx)
{
   // Simply show an error message to the user.
   pEx->ReportError();
   pEx->Delete();
}
catch(CMemoryException* pEx)
{
   pEx->ReportError();
   pEx->Delete();
   // We can't recover from this memory exception, so we'll 
   // just terminate the app without any cleanup. Normally, 
   // an application should do everything it possibly can to 
   // clean up properly and _not_ call AfxAbort().
   AfxAbort();
}

// If an exception occurs in the CFile constructor, 
// the language will free the memory allocated by new 
// and will not complete the assignment to pFile. 
// Thus, our clean-up code needs to test for NULL. 
if (pFile != NULL)
{
   pFile->Close();
   delete pFile;
}         

요구 사항

헤더: afx.h

참고 항목

참조

CFile 클래스

계층 구조 차트

CFile::SetLength