XpStyle.cs

using System;
using System.Runtime.InteropServices;
using Microsoft.Win32;
 
namespace be.gaudry.view.style
{
    public class XpStyle
    {
        [DllImport("UxTheme")]
        public static extern bool IsThemeActive();
 
        [DllImport("UxTheme")]
        public static extern bool IsAppThemed();
 
        public enum Theme
        {
            WindowsClassic,
            XPBlue,
            XPGreen,
            XPSilver
        }
 
        public static Theme CurrentTheme()
        {
            RegistryKey key = 
                Registry.CurrentUser.OpenSubKey(
                    @"Software\Microsoft\Windows\CurrentVersion\ThemeManager"
                    );
            if (key != null) 
            {
                if ("1" == (string) key.GetValue("ThemeActive"))
                {
                    string s = (string) key.GetValue("ColorName");
                    if (s != null)
                    {
                        if (String.Compare(s, "NormalColor", true) == 0)
                            return Theme.XPBlue;
                        if (String.Compare(s, "HomeStead", true) == 0)
                            return Theme.XPGreen;
                        if (String.Compare(s, "Metallic", true) == 0)
                            return Theme.XPSilver;
                    }
                } 
            }
            return Theme.WindowsClassic;
        }
 
    }
}