Delphi ActiveX

Demonstrate S3_DownloadBytes

Demonstrates how to download a file into memory from the Amazon S3 service. Delphi ActiveX

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
http: TChilkatHttp;
bucketName: WideString;
objectName: WideString;
localFilePath: WideString;
jpgBytes: Array of Byte;
fac: TCkFileAccess;

begin
success := 0;

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

http := TChilkatHttp.Create(Self);

http.AwsAccessKey := 'AWS_ACCESS_KEY';
http.AwsSecretKey := 'AWS_SECRET_KEY';

bucketName := 'chilkat.qa';
objectName := 'images/sea_creatures/starfish.jpg';
localFilePath := 'qa_output/starfish.jpg';

jpgBytes := http.S3_DownloadBytes(bucketName,objectName);
if (http.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Download successful.');

fac := TCkFileAccess.Create(Self);
success := fac.WriteEntireFile(localFilePath,jpgBytes);
Memo1.Lines.Add('File saved success = ' + IntToStr(Ord(success)));
end;