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Article: Understanding COM References in Delphi

Synchronize Local Directory Tree

Downloads files from the FTP server to a local directory tree. Synchronization modes include:

mode=0: Download all files
mode=1: Download all files that do not exist on the local filesystem.
mode=2: Download newer or non-existant files.
mode=3: Download only newer files. If a file does not already exist on the local filesystem, it is not downloaded from the server.

Download Chilkat FTP2 ActiveX

uses
    Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
    Dialogs, StdCtrls,
    CHILKATFTP2Lib_TLB,
    OleCtrls;

...

procedure TForm1.Button1Click(Sender: TObject);
var
ftp: TChilkatFtp2;
success: Integer;
mode: Integer;

begin
ftp := TChilkatFtp2.Create(Self);

//  Any string unlocks the component for the 1st 30-days.
success := ftp.UnlockComponent('Anything for 30-day trial');
if (success <> 1) then
  begin
    ShowMessage(ftp.LastErrorText);

  end;

//  Note: This is a valid FTP account that you may use for testing.
ftp.Hostname := 'ftp.secureftp-test.com';
ftp.Username := 'test';
ftp.Password := 'test';

ftp.KeepSessionLog := 1;

//  Connect and login to the FTP server.
success := ftp.Connect();
if (success <> 1) then
  begin
    ShowMessage(ftp.LastErrorText);

  end;

//  Set the current remote directory to the root of
//  the tree to be downloaded.
success := ftp.ChangeRemoteDir('/subDir1');
if (success <> 1) then
  begin
    ShowMessage(ftp.LastErrorText);

  end;

//  Recursively download all non-existant and newer files.
mode := 2;
success := ftp.SyncLocalTree('c:/temp/subDir1',mode);
if (success <> 1) then
  begin
    ShowMessage(ftp.LastErrorText);

  end;

ftp.Disconnect();

//  Display the session log.
Memo1.Lines.Add(ftp.SessionLog);
end;

 

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