(Delphi ActiveX) GZip Decompress File

Demonstrates how to uncompress a .gz compressed file to get the uncompressed original file.

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

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
gzip: TChilkatGzip;
success: Integer;

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

gzip := TChilkatGzip.Create(Self);

success := gzip.UncompressFile('qa_data/gzip/something.csv.gz','qa_output/something.csv');
if (success <> 1) then
  begin
    Memo1.Lines.Add(gzip.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('File successfully uncompressed and extracted from the Gzip compressed format.');
end;