[C/C++]HTML 이용한 FileDownload시에 Web File의 전체 사이즈 알아오기

하면됨..

DWORD CMapInstallerDlg::getFileLengthFromHttp(CString url)

{

DWORD filesize;

TCHAR szCause[255];

CString CauseOfError;

TRY 

{

CInternetSession session;

CHttpFile *remotefile = (CHttpFile*)session.OpenURL(url,1,INTERNET_FLAG_TRANSFER_BINARY);

TCHAR szContentLength[32];

DWORD dwInfoSize = 32;

DWORD dwFileSize = 0;

BOOL bGetFileSize = FALSE;

if(remotefile->QueryInfo(HTTP_QUERY_CONTENT_LENGTH, szContentLength, &dwInfoSize, NULL))

{

bGetFileSize = TRUE;

dwFileSize = (DWORD)_ttol(szContentLength)

filesize = dwFileSize;

}

else

{ // file nothing

filesize = -1;

}

remotefile->Close();

session.Close();

delete remotefile;

delete session;

}

CATCH_ALL(error)

{

AfxMessageBox("Error when find Data from Server");

error->GetErrorMessage(szCause,254,NULL);

CauseOfError.Format("%s",szCause);

AfxMessageBox(CauseOfError);

}

END_CATCH_ALL;