Delphi ActiveX

Example: Http.S3_FileExists method

Demonstrates the S3_FileExists method. 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
http: TChilkatHttp;
bucketName: WideString;
objectName: WideString;
retval: Integer;

begin
http := TChilkatHttp.Create(Self);

// Insert your AWS keys here:
http.AwsAccessKey := 'AWS_ACCESS_KEY';
http.AwsSecretKey := 'AWS_SECRET_KEY';

bucketName := 'chilkat.ocean';
objectName := 'seahorse.jpg';
http.AwsRegion := 'us-west-2';
http.AwsEndpoint := 's3-us-west-2.amazonaws.com';

retval := http.S3_FileExists(bucketName,objectName);
if (retval < 0) then
  begin
    Memo1.Lines.Add('Failed to check for the S3 object existence');
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;
if (retval = 0) then
  begin
    Memo1.Lines.Add('The S3 object does not exist.');
    Exit;
  end;

Memo1.Lines.Add('The S3 object exists.');
end;