주 모니터의 해상도(Resolution)와 색상(BITSPIXEL)알아내기. User32.dll 이용

[Setup]
AppName=DisplayResoltution
AppVerName=DisplayResoltution
DefaultDirName=DisplayResoltution
DisableStartupPrompt=true
Uninstallable=false

[Code]
[Code]
function GetSystemMetrics (nIndex: Integer): Integer;
  external 'GetSystemMetrics@User32.dll stdcall setuponly';

Const
    SM_CXSCREEN = 0; // The enum-value for getting the width of the cient area for a full-screen window on the primary display monitor, in pixels.
    SM_CYSCREEN = 1; // The enum-value for getting the height of the client area for a full-screen window on the primary display monitor, in pixels.

function InitializeSetup(): Boolean;
  var
      hDC: Integer;
      xres: Integer;
      yres: Integer;
begin
    xres := GetSystemMetrics(SM_CXSCREEN);
    yres := GetSystemMetrics(SM_CYSCREEN); //vertical resolution

    MsgBox( 'Current resolution is ' + IntToStr(xres) +
        'x' + IntToStr(yres)
, mbInformation, MB_OK );

    Result := False;
end;