Add Content-Length Header to a MIME Message

The AddContentLength method automatically computes the length of the MIME content and adds a Content-Length header with the correct number of bytes.

Download Chilkat MIME ActiveX

uses
    Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
    Dialogs, StdCtrls,
    CHILKATMIMELib_TLB,
    OleCtrls;

...

procedure TForm1.Button1Click(Sender: TObject);
var
mime: CHILKATMIMELib_TLB.IChilkatMime;
success: Integer;

begin

mime := CoChilkatMime.Create();

success := mime.UnlockComponent('Anything for 30-day trial.');
if (success = 0) then
  begin
    Memo1.Lines.Add(mime.LastErrorText);
    Exit;
  end;

//  Set the MIME body:
mime.SetBody('This is a test');

//  The complete size (in bytes) of the contents is computed,
//  even if the MIME is multipart, and the Content-Length header
//  is added.
mime.AddContentLength();

//  Display the MIME:
Memo1.Lines.Add(mime.GetMime());


end;