Delphi ActiveX

Transition from Email.CreateMdn to Email.ToMdn

Provides instructions for replacing deprecated CreateMdn method calls with ToMdn. 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;
explanation: WideString;
statusFieldsXml: WideString;
headerOnly: Integer;
emailObj: IChilkatEmail;
emailOut: TChilkatEmail;

begin
success := 0;

email := TChilkatEmail.Create(Self);

// ...
// ...

explanation := '...';
statusFieldsXml := '...';
headerOnly := 0;

// ------------------------------------------------------------------------
// The CreateMdn method is deprecated:

emailObj := email.CreateMdn(explanation,statusFieldsXml,headerOnly);
if (email.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(email.LastErrorText);
    Exit;
  end;

// ...
// ...

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

emailOut := TChilkatEmail.Create(Self);
success := email.ToMdn(explanation,statusFieldsXml,headerOnly,emailOut.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(email.LastErrorText);
    Exit;
  end;
end;