(Delphi DLL) Transition from Zip.FirstEntry to Zip.EntryAt

Provides instructions for replacing deprecated FirstEntry method calls with EntryAt.

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

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

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, ZipEntry, Zip;

...

procedure TForm1.Button1Click(Sender: TObject);
var
zip: HCkZip;
entryObj: HCkZipEntry;
ze: HCkZipEntry;
success: Boolean;

begin
zip := CkZip_Create();

// ...
// ...

// ------------------------------------------------------------------------
// The FirstEntry method is deprecated:

entryObj := CkZip_FirstEntry(zip);
if (CkZip_getLastMethodSuccess(zip) = False) then
  begin
    Memo1.Lines.Add(CkZip__lastErrorText(zip));
    Exit;
  end;

// ...
// ...

CkZipEntry_Dispose(entryObj);

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

// Your application creates a new, empty ZipEntry object which is passed 
// in the last argument and filled upon success.

// The 1st entry is at index 0.
ze := CkZipEntry_Create();
success := CkZip_EntryAt(zip,0,ze);
if (success = False) then
  begin
    Memo1.Lines.Add(CkZip__lastErrorText(zip));
    Exit;
  end;

CkZip_Dispose(zip);
CkZipEntry_Dispose(ze);

end;