Pascal (Lazarus/Delphi)

Iterate Email Headers

Demonstrates how to iterate over the email header fields. 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.Email;

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

procedure RunDemo;
var
  success: Boolean;
  email: TEmail;
  n: Integer;
  i: Integer;
  name: string;
  value: string;

begin
  success := False;

  email := TEmail.Create;

  //  First, load an email from a file. 
  //  Note: an email object may be loaded from a file, or
  //  downloaded directly from a POP3 or IMAP server...

  success := email.LoadEml('testReceivedHdrs.eml');
  if (success <> True) then
    begin
      WriteLn(email.LastErrorText);
      Exit;
    end;

  //  How many header fields?

  n := email.NumHeaderFields;
  if (n > 0) then
    begin

      //  Display the name and value of each header:

      for i := 0 to n - 1 do
        begin
          name := email.GetHeaderFieldName(i);
          value := email.GetHeaderFieldValue(i);
          WriteLn(i);
          WriteLn(name);
          WriteLn(value);

        end;

    end;


  email.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.