(Delphi ActiveX) Transition from Cert.ExportPublicKey to Cert.GetPublicKey

Provides instructions for replacing deprecated ExportPublicKey method calls with GetPublicKey.

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
cert: TChilkatCert;
publickeyObj: IPublicKey;
publickeyOut: TPublicKey;
success: Integer;

begin
cert := TChilkatCert.Create(Self);

// ------------------------------------------------------------------------
// The ExportPublicKey method is deprecated:

publickeyObj := cert.ExportPublicKey();
if (cert.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;

// ...
// ...

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

publickeyOut := TPublicKey.Create(Self);
success := cert.GetPublicKey(publickeyOut.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(cert.LastErrorText);
    Exit;
  end;
end;