(Delphi DLL) QuickGetObj Example

The QuickGetObj method is called to send a GET request and receive the response as an HttpResponse object.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
http: HCkHttp;
resp: HCkHttpResponse;
statusCode: Integer;

begin
success := False;

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

http := CkHttp_Create();

// Send a GET request to download a PDF into an HTTP response object.
resp := CkHttpResponse_Create();
success := CkHttp_HttpNoBody(http,'GET','https://www.chilkatsoft.com/hello.pdf',resp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

// Get the response status
statusCode := CkHttpResponse_getStatusCode(resp);
Memo1.Lines.Add('Response status: ' + IntToStr(statusCode));

// In this example, we want a 200 status code.
if (statusCode = 200) then
  begin
    // Save the response body to a file.
    // Note: This is only for the sake of this example.
    // It's better to call the Download method to download directly to a file.
    success := CkHttpResponse_SaveBodyBinary(resp,'qa_output/hello.pdf');
    if (success = False) then
      begin
        Memo1.Lines.Add('Failed to write output file.');
      end
    else
      begin
        Memo1.Lines.Add('Wrote hello.pdf');
      end;

  end
else
  begin
    // Perhaps we have response body with an error message..
    Memo1.Lines.Add(CkHttpResponse__bodyStr(resp));

  end;

CkHttp_Dispose(http);
CkHttpResponse_Dispose(resp);

end;