Delphi ActiveX

Transition from Email.GetSignedByCertChain to Email.LastSignerCert

Provides instructions for replacing deprecated GetSignedByCertChain method calls with LastSignerCert. 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;
email: TChilkatEmail;
certChainObj: IChilkatCertChain;
signerCert: TChilkatCert;
certChain: TChilkatCertChain;

begin
success := 0;

email := TChilkatEmail.Create(Self);

// ...
// ...

// ------------------------------------------------------------------------
// The GetSignedByCertChain method is deprecated:

certChainObj := email.GetSignedByCertChain();
if (email.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(email.LastErrorText);
    Exit;
  end;

// ...
// ...

// ------------------------------------------------------------------------
// Do the equivalent using LastSignerCert to get the signing certificate,
// then build the cert chain from the signing certificate object.

signerCert := TChilkatCert.Create(Self);
success := email.LastSignerCert(0,signerCert.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(email.LastErrorText);
    Exit;
  end;

// Get the certificate chain from the signer certificate.
certChain := TChilkatCertChain.Create(Self);
success := signerCert.BuildCertChain(certChain.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(signerCert.LastErrorText);
    Exit;
  end;
end;