Delphi ActiveX

Zip and Keep Open

See more Zip Examples

Zip a directory tree by calling WriteZip instead of WriteZipAndClose. When WriteZip is called, the created zip is automatically opened and the zip object contains references to the compressed zip entries (mapped entries) contained within the .zip. Delphi ActiveX

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
success: Integer;
zip: TChilkatZip;
zipPath: WideString;
recurse: Integer;
numEntries: Integer;
entry: TChilkatZipEntry;
i: Integer;

begin
success := 0;

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

zip := TChilkatZip.Create(Self);

zipPath := 'c:/temp/myFiles.zip';

// Initialize the zip object, which also sets the FileName property to the path of the zip to be created.
zip.NewZip(zipPath);

// Append references to files to be zipped.
recurse := 1;
success := zip.AppendFiles('c:/temp/files_to_zip/*',recurse);
if (success = 0) then
  begin
    Memo1.Lines.Add(zip.LastErrorText);
    Exit;
  end;

// Write the .zip, but don't close the zip file.
// The zip file we just created is automatically opened and the zip object
// now contains entries that are contained within the zip.  (They are memory-mapped entries)
success := zip.WriteZip();
if (success = 0) then
  begin
    Memo1.Lines.Add(zip.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Successfully created ' + zipPath);

// Let's look at what's in the .zip we just created..

numEntries := zip.NumEntries;

entry := TChilkatZipEntry.Create(Self);

i := 0;
while i < numEntries do
  begin
    zip.EntryAt(i,entry.ControlInterface);
    if (entry.IsDirectory) then
      begin
        Memo1.Lines.Add(IntToStr(i) + ': ' + entry.FileName + ' (directory)');
      end
    else
      begin
        Memo1.Lines.Add(IntToStr(i) + ': ' + entry.FileName);
      end;
    i := i + 1;
  end;

// Close the zip file when finished.
zip.CloseZip();
end;