Delphi DLL

Example: Http.S3_FileExists method

Demonstrates the S3_FileExists method. Delphi DLL

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
bucketName: PWideChar;
objectName: PWideChar;
retval: Integer;

begin
http := CkHttp_Create();

// Insert your AWS keys here:
CkHttp_putAwsAccessKey(http,'AWS_ACCESS_KEY');
CkHttp_putAwsSecretKey(http,'AWS_SECRET_KEY');

bucketName := 'chilkat.ocean';
objectName := 'seahorse.jpg';
CkHttp_putAwsRegion(http,'us-west-2');
CkHttp_putAwsEndpoint(http,'s3-us-west-2.amazonaws.com');

retval := CkHttp_S3_FileExists(http,bucketName,objectName);
if (retval < 0) then
  begin
    Memo1.Lines.Add('Failed to check for the S3 object existence');
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    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.');

CkHttp_Dispose(http);

end;