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unit Unit2;

interface

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

type
  TForm1 = class(TForm)
    Timer1: TTimer;
    procedure FormCreate(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.FormCreate(Sender: TObject);
 var  DevMode1    : TDeviceMode;
     liRetValue : Longint;
  begin
  devmode1.dmPelsWidth:=1024;
  devmode1.dmPelsHeight:=768;
  devmode1.dmBitsPerPel:=16;
  devmode1.dmDisplayFrequency:=85;
  devmode1.dmFields:=DM_BITSPERPEL+DM_PELSWIDTH+DM_PELSHEIGHT+dm_DisplayFrequency;
  liretvalue:=ChangeDisplaySettings (DevMode1, CDS_UPDATEREGISTRY);
  SendMessage(HWND_BROADCAST, WM_DISPLAYCHANGE, SPI_SETNONCLIENTMETRICS, 0);
  timer1.Enabled:=true;
end;


procedure TForm1.Timer1Timer(Sender: TObject);
begin
application.Terminate;

end;

end.                    

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function NewRes(XRes, YRes, Depth, Freq: DWORD): Integer;
var
  DevMode: TDeviceMode;
begin
  EnumDisplaySettings(nil, 0, DevMode);
  DevMode.dmFields := DM_PELSWIDTH or DM_PELSHEIGHT or DM_BitsPerPel or DM_DISPLAYFREQENCY;
  DevMode.dmPelsWidth := XRes;
  DevMode.dmPelsHeight := YRes;
  DevMode.dmBitsPerPel:= Depth;
  DevMode.dmDisplayFrequency:=Freq;
  Result := ChangeDisplaySettings(DevMode, CDS_UPDATEREGISTRY);
end;