// Form1.Windowstate := wsMinimized;


unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    procedure WMQueryOpen(var Msg: TWMQueryOpen); message WM_QUERYOPEN;
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure tform1.WMQueryOpen(var Msg: TWMQueryOpen);
begin
  Msg.Result := 0;
end;