unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button: TButton;
    procedure ButtonClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
    MsRdpClient: TMsRdpClient;
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.ButtonClick(Sender: TObject);
begin
   MsRdpClient.Server := '<servername>';
   MsRdpClient.UserName := '<benutzer>';
   MsRdpClient.Connect;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  MsRdpClient := TMsRdpClient.Create(Self);
  with MsRdpClient do
  begin
    Name := 'MsRdpClient';
    Parent := Self;
    Left := 0;
    Top := 0;
    Width := 800;
    Height := 600;
    TabOrder := 0;
    ControlData := {0003000008000200000000000B000000030000000000};
  end;
  Button.BringToFront;
end;

end.