type 
  TForm1 = class(TForm) 
  ... 
  ... 
  private 
    { Private-Deklarationen } 
  public 
    procedure CreateParams(var Params: TCreateParams); override; 
  end; 
 
var 
  Form1: TForm1; 
 
implementation 
 
{$R *.DFM} 
 
procedure TForm1.CreateParams(var Params: TCreateParams); 
begin 
  inherited CreateParams(Params); 
  Params.ExStyle := Params.ExStyle or 4194304; 
end;