HTTP Download File

Download a file via HTTP to disk. The file is downloaded in streaming mode directly to the filesystem. Any size file can be downloaded. The memory footprint is constant and small.

Download Chilkat HTTP ActiveX

uses
    Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
    Dialogs, StdCtrls,
    CHILKATHTTPLib_TLB,
    OleCtrls;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: TChilkatHttp;
success: Integer;

begin
http := TChilkatHttp.Create(Self);

//  Any string unlocks the component for the 1st 30-days.
success := http.UnlockComponent('Anything for 30-day trial');
if (success <> 1) then
  begin
    ShowMessage(http.LastErrorText);
    Exit;
  end;

//  Download the Python language install.
//  Note: This URL may have changed since this example was created.
success := http.Download('http://www.python.org/ftp/python/2.5/python-2.5.msi','python-2.5.msi');
if (success <> 1) then
  begin
    ShowMessage(http.LastErrorText);
  end
else
  begin
    ShowMessage('Python Download Complete!');
  end;
end;