[윈도우즈 API] 스크린 세이버 On/Off

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation
{$R *.dfm}

function ActivateScreenSaver(Activate: boolean): boolean;
var
  IntActive: byte;
begin
  if Activate then
    IntActive := 1
  else
    IntActive := 0;

  Result := SystemParametersInfo
              (SPI_SETSCREENSAVEACTIVE, IntActive,
               nil, 0);
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  // 스크린 세이버 On
  ActivateScreenSaver(True);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  // 스크린 세이버 Off
  ActivateScreenSaver(False);
end;

end.