Delphi DLL

FTP Download File to a Stream

Demonstrates how to FTP download a file to a Chilkat stream. Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Ftp2, Stream;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
ftp: HCkFtp2;
streamObj: HCkStream;

begin
success := False;

// This example assumes the Chilkat FTP2 API to have been previously unlocked.
// See FTP2 Unlock Sample for sample code.

ftp := CkFtp2_Create();

CkFtp2_putHostname(ftp,'my-ftp-server.com');
CkFtp2_putPort(ftp,21);
CkFtp2_putUsername(ftp,'mFtpLogin');
CkFtp2_putPassword(ftp,'myFtpPassword');
CkFtp2_putAuthTls(ftp,True);
CkFtp2_putPassive(ftp,True);

// Connect and login to the FTP server using TLS.
success := CkFtp2_Connect(ftp);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

// Move to the sub-directory (from the FTP user's home directory) where the file is located.
success := CkFtp2_ChangeRemoteDir(ftp,'temp');
if (success = False) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

// Stream to this local file:
streamObj := CkStream_Create();
CkStream_putSinkFile(streamObj,'c:/temp/qa_output/penguins2.jpg');

success := CkFtp2_GetFileToStream(ftp,'penguins2.jpg',streamObj);
if (success = False) then
  begin
    Memo1.Lines.Add(CkFtp2__lastErrorText(ftp));
    Exit;
  end;

CkFtp2_Disconnect(ftp);

Memo1.Lines.Add('Success.');

CkFtp2_Dispose(ftp);
CkStream_Dispose(streamObj);

end;