(Delphi DLL) Transition from Email.FindIssuer to Cert.GetIssuer

Provides instructions for replacing deprecated FindIssuer method calls with Cert.GetIssuer.

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, Email, Cert;

...

procedure TForm1.Button1Click(Sender: TObject);
var
email: HCkEmail;
cert: HCkCert;
certObj: HCkCert;
issuerCert: HCkCert;
success: Boolean;

begin
email := CkEmail_Create();
cert := CkCert_Create();

// ...
// ...

// ------------------------------------------------------------------------
// The FindIssuer method is deprecated:

certObj := CkEmail_FindIssuer(email,cert);
if (CkEmail_getLastMethodSuccess(email) = False) then
  begin
    Memo1.Lines.Add(CkEmail__lastErrorText(email));
    Exit;
  end;

// ...
// ...

CkCert_Dispose(certObj);

// ------------------------------------------------------------------------
// Do the equivalent using Cert.GetIssuer.
// Your application creates a new, empty Cert object which is passed 
// in the last argument and filled upon success.

issuerCert := CkCert_Create();
success := CkCert_GetIssuer(cert,issuerCert);
if (success = False) then
  begin
    Memo1.Lines.Add(CkEmail__lastErrorText(email));
    Exit;
  end;

CkEmail_Dispose(email);
CkCert_Dispose(cert);
CkCert_Dispose(issuerCert);

end;