use strict;
use Win32::API;

use constant HORZRES => 8;
use constant VERTRES => 10;
use constant BITSPIXEL => 12;
use constant VREFRESH => 116;

Win32::API->Import(
	"gdi32", 
	"CreateDC", 
	['P', 'P', 'P', 'P'], 
	'N',
) or die "Can't import the CreateDC API:\n$!\n";
Win32::API->Import(
	"gdi32", 
	"GetDeviceCaps", 
	['N', 'N'], 
	'N',
) or die "Can't import the GetDeviceCaps API:\n$!\n";
Win32::API->Import(
	"gdi32", 
	"DeleteDC", 
	['N'], 
	'V',
) or die "Can't import the DeleteDC API:\n$!\n";

my $hdc = CreateDC("DISPLAY", 0, 0, 0);
if(!$hdc) {
    die "ERROR: can't open display!\n";
}

my %colors = (
    8 => "256 Color",
    16 => "High Color",
    24 => "True Color",
    32 => "True Color",
);

my $X = GetDeviceCaps($hdc, HORZRES);
my $Y = GetDeviceCaps($hdc, VERTRES);
my $BPP = GetDeviceCaps($hdc, BITSPIXEL);
my $HZ = GetDeviceCaps($hdc, VREFRESH);

print "${X}x$Y $colors{$BPP} ($BPP Bit)\n";

DeleteDC($hdc);