Zip a Directory Tree with Progress Monitoring

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Download All 64-bit Chilkat ActiveX Components (.zip)

Delphi zip compression example program demonstrating how to zip an entire directory tree with progress monitoring and abort capability.

// Create a Zip with progress monitoring event callbacks.
// The ChilkatZip21 variable is an instance of the Chilkat Zip ActiveX
// dropped onto the Delphi form.
procedure TForm1.Button1Click(Sender: TObject);
var
  recurse: Integer;
  success: Integer;

begin
  // UnlockComponent should be called once at the beginning of a program.
  ChilkatZip21.UnlockComponent('anything for 30-day trial');

  // Initialize the zip object.
  ChilkatZip21.NewZip('test.zip');

  // Add a directory tree to the zip object.  The AppendFiles
  // method recursively descends a directory and adds references to
  // files and directories to the zip object.  When the
  // zip is written (by calling WriteZipAndClose) all referenced files
  // and directories are added.
  recurse := 1;
  ChilkatZip21.AppendFiles('c:/temp/abc/*', recurse);

  {
    The directory tree on disk looks like this:

C:\temp\abc\dudeA.gif
C:\temp\abc\setup.exe
C:\temp\abc\b\
C:\temp\abc\b\dudeAbc.gif
C:\temp\abc\b\dudeXyz.gif
C:\temp\abc\b\Setup.exe
C:\temp\abc\b\123\
C:\temp\abc\b\123\dude123.gif
C:\temp\abc\b\123\test.txt

    The directory tree in the .zip looks like this:

dudeA.gif
setup.exe
b\
b\dudeAbc.gif
b\dudeXyz.gif
b\Setup.exe
b\123\
b\123\dude123.gif
b\123\test.txt

  }

  success := ChilkatZip21.WriteZipAndClose();
  if (success = 0) then begin
      ChilkatZip21.SaveLastError('zipErrorLog.txt');
      ShowMessage(ChilkatZip21.LastErrorText);
  end;

  ShowMessage('Done!');

end;

// This method is called when the percent-done value updates during zipping.
// The zip can be aborted by setting the abort argument equal to 1.
procedure TForm1.ChilkatZip21WriteZipPercentDone(ASender: TObject;
  percentDone: Integer; out abort: Integer);
begin
  // percentDone holds a value from 1 to 100.
  ProgressBar1.Position := percentDone;

  // Uncomment the following lines to abort the zip after it
  // is 65% complete.
  //if (percentDone >= 65) then
  //  abort := 1;

end;