Pascal (Lazarus/Delphi)

Create a multipart/related MIME Entity

Demonstrates the Chilkat Mime.NewMultipartRelated method, which initializes the object as an empty multipart/related entity. It takes no arguments; the primary part and its related resources are then appended.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: multipart/related ties a primary part to the resources it references — most commonly an HTML body and the inline images it embeds via cid: references. Unlike a plain attachment, a related image is displayed within the message rather than listed separately. The HTML part comes first, followed by each referenced resource with a matching Content-ID.

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Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Mime;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  mime: TMime;
  htmlPart: TMime;

begin
  success := False;

  //  Demonstrates the Mime.NewMultipartRelated method, which initializes the object as an empty
  //  multipart/related entity, clearing any existing content.  It takes no arguments.

  mime := TMime.Create;

  success := mime.NewMultipartRelated();
  if (success = False) then
    begin
      WriteLn(mime.LastErrorText);
      Exit;
    end;

  //  multipart/related groups a primary part with the resources it references, such as an HTML body
  //  and the inline images it displays.
  htmlPart := TMime.Create;
  success := htmlPart.SetBodyFromHtml('<html><body><img src="cid:logo"></body></html>');
  if (success = False) then
    begin
      WriteLn(htmlPart.LastErrorText);
      Exit;
    end;
  success := mime.AppendPart(htmlPart);
  if (success = False) then
    begin
      WriteLn(mime.LastErrorText);
      Exit;
    end;

  success := mime.AppendPartFromFile('qa_data/logo.png');
  if (success = False) then
    begin
      WriteLn(mime.LastErrorText);
      Exit;
    end;

  WriteLn('Number of parts: ' + mime.NumParts);


  mime.Free;
  htmlPart.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.