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program SETBright;

{$APPTYPE CONSOLE}

uses
  SysUtils,
  ActiveX,
  Variants,
  ComObj;

var dark : Integer;
    darkStr : String;

procedure  SetBrightness(Timeout : Integer; Brightness : Byte);
var
  FSWbemLocator : OLEVariant;
  FWMIService   : OLEVariant;
  FWbemObjectSet: OLEVariant;
  FWbemObject   : OLEVariant;
  oEnum         : IEnumvariant;
  iValue        : LongWord;
begin;
  FSWbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
  FWMIService   := FSWbemLocator.ConnectServer('localhost', 'root\WMI', '', '');
  FWbemObjectSet:= FWMIService.ExecQuery('SELECT * FROM WmiMonitorBrightnessMethods Where Active=True','WQL',$00000020);
  oEnum         := IUnknown(FWbemObjectSet._NewEnum) as IEnumVariant;
  while oEnum.Next(1, FWbemObject, iValue) = 0 do
  begin
    FWbemObject.WmiSetBrightness(Timeout, Brightness);
    FWbemObject:=Unassigned;
  end;
end;


begin
  if ParamCount = 1 then
begin
    darkStr := paramstr(1);
    dark:= StrToInt(darkStr);
end else
   dark:=40; //default

 try
    CoInitialize(nil);
    try
      SetBrightness(5, dark);
    finally
      CoUninitialize;
    end;
 except
    on E:EOleException do
        Writeln(Format('EOleException %s %x', [E.Message,E.ErrorCode]));
    on E:Exception do
        Writeln(E.Classname, ':', E.Message);
 end;
 Writeln('Press Enter to exit');// delete it
 Readln; // delete it
end.
(*
Batch file: setbright.bat
setbright <0 - 100>
Example: setbright 40
*)					

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program Project14;

{$APPTYPE CONSOLE}

uses
  SysUtils,
  Variants,
  ActiveX,
  ComObj,
  WbemScripting_TLB in '..\12.0\Imports\WbemScripting_TLB.pas';

var
  WmiLocator: ISWbemLocator;
  WmiServices: ISWbemServices;
  MonitorBrightnessMethods: ISWbemObject;
  SetBrightnessInParams: ISWbemObject;

begin
  try
    CoInitialize(nil);
    try
      WmiLocator := CoSWbemLocator.Create;
      WmiServices := WmiLocator.ConnectServer('localhost', 'root\WMI', '', '', '', '', 0, nil);
      MonitorBrightnessMethods := WmiServices.Get('WmiMonitorBrightnessMethods', 0, nil);

      SetBrightnessInParams := MonitorBrightnessMethods.Methods_.Item('WmiSetBrightness', 0).InParameters.SpawnInstance_(0);
      SetBrightnessInParams.Properties_.Add('Timeout', wbemCimtypeUint32, false, 0).Set_Value(1000);
      SetBrightnessInParams.Properties_.Add('Brightness', wbemCimtypeUint8, false, 0).Set_Value(100);

      MonitorBrightnessMethods.ExecMethod_('WmiSetBrightness', SetBrightnessInParams, 0, nil);
    finally
      CoUninitialize;
    end;
  except
    on E: EOleException do
      Writeln(Format('%s: %s %x', [E.Classname, E.Message, E.ErrorCode]));
    on E: Exception do
      Writeln(Format('%s: %s', [E.Classname, E.Message]));
  end;

end.