(Delphi ActiveX) Transition from ZipEntry.NextEntry to ZipEntry.GetNext

Provides instructions for replacing deprecated NextEntry method calls with GetNext.

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

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
zip: TChilkatZip;
success: Integer;
entry: IChilkatZipEntry;
finished: Integer;
next: IChilkatZipEntry;
ze: TChilkatZipEntry;
entryValid: Integer;

begin
// ------------------------------------------------------------------------
// The NextEntry method is deprecated.
// See below or code showing how to rewrite using EntryAt/GetNext

zip := TChilkatZip.Create(Self);

success := zip.OpenZip('qa_data/zips/xml_files.zip');
if (success <> 1) then
  begin
    Memo1.Lines.Add(zip.LastErrorText);
    Exit;
  end;

entry := zip.FirstEntry();
if (zip.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add('This zip archive is empty.');
    Exit;
  end;

finished := 0;
while finished = 0 do
  begin

    if (entry.IsDirectory = 0) then
      begin
        Memo1.Lines.Add(entry.FileName);
      end
    else
      begin
        Memo1.Lines.Add('(directory) ' + entry.FileName);
      end;
    next := entry.NextEntry();
    if (entry.LastMethodSuccess = 0) then
      begin
        finished := 1;
      end;

    entry := next;
  end;

zip.CloseZip();

Memo1.Lines.Add('----');

// ------------------------------------------------------------------------
// Do the equivalent using EntryAt/GetNext.

success := zip.OpenZip('qa_data/zips/xml_files.zip');

ze := TChilkatZipEntry.Create(Self);
zip.EntryAt(0,ze.ControlInterface);

entryValid := 1;
while entryValid = 1 do
  begin

    if (ze.IsDirectory = 0) then
      begin
        Memo1.Lines.Add(ze.FileName);
      end
    else
      begin
        Memo1.Lines.Add('(directory) ' + ze.FileName);
      end;

    entryValid := ze.GetNext();
  end;

zip.CloseZip();
end;