How do I list Pastebin pastes created by a user in Delphi?

I am a beginner in Delphi (I use Delphi 2010 because of school) and I am trying to get an output textfile with a list of pastes that a pastebin user has created, but I am not exactly sure how to do it. On Pastebin.com (PastebinAPI), they explain how the API works, but I can't get it working on Delphi.

Here is what I have coded so far (I blurred out my details):

procedure TfrmLogin.imgLoginButtonClick(Sender: TObject);
var
  sSource, sAPI_Dev_Key, sAPI_User_Key, sAPI_Results_Limit, sAPI_Option,
    sListPasteLink: String;
begin

  sSource := 'https://pastebin.com/api/api_post.php/';
  sAPI_Dev_Key := 'xxxxxxxxxxxxxxxxxxxxxxxx/';
  sAPI_User_Key := 'xxxxxxxxxxxxxxxxxxxxxxx/';
  sAPI_Results_Limit := '1000/';
  sAPI_Option := 'list';

  sListPasteLink := sSource + sAPI_Dev_Key + sAPI_User_Key +
    sAPI_Results_Limit + sAPI_Option;
end;

I am not sure what to do after this, how do I POST this generated link in Delphi to get the list of pastes created?

I tried copying the generated link and pasting it in my web browser, but Pastebin says This page has been removed!

Any help would be appreciated, thank you

Solution

Here is an example. Drop a TButton, a TMemo, a TIdHTTP and a TIdSSLIOHandlerSocketOpenSSL on a form. You will also need to copy libeay32.dll and ssleay32.dll into your application directory (they are provided somehere in the directory where Delphi was installed).

procedure TForm1.Button1Click(Sender: TObject);
var
  Params: TStringList;
begin
  Params := TStringList.Create;
  Params.Add('api_dev_key=*****');
  Params.Add('api_user_key=*****');
  Params.Add('api_option=list');
  try
    IdSSLIOHandlerSocketOpenSSL1.SSLOptions.SSLVersions := [sslvTLSv1_1, sslvTLSv1_2];
    IdHTTP1.IOHandler := IdSSLIOHandlerSocketOpenSSL1;
    Memo1.Text := IdHTTP1.Post('https://pastebin.com/api/api_post.php', Params);
  finally
    Params.Free;
  end;
end;