ColorAppearanceSetting.cs

using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AdvancedWindowsAppearence
{
    public class ColorAppearanceSetting : AppearanceSetting
    {
        public readonly string SizeRegistryKey;

        public ColorAppearanceSetting(string _name, string _regeditPath, string _colorRegistryPath)
        {
            Name = _name;
            SizeRegistryKey = _regeditPath;
            ColorRegistryPath = _colorRegistryPath;
            LoadColorValues();
        }

        void LoadColorValues()
        {
            Size = GetSizeFromRegistry(SizeRegistryKey);
            ItemColor = GetColorFromRegistry(ColorRegistryPath);
            IsEdited = false;
        }

        int? GetSizeFromRegistry(string registrypath)
        {
            if (registrypath == null || registrypath == "") return null;
            RegistryKey registryKey = Registry.CurrentUser.OpenSubKey(@"Control Panel\Desktop\WindowMetrics");
            if (registryKey == null) return null;

            var sizeReg = registryKey.GetValue(registrypath);
            registryKey.Close();
            if (sizeReg == null) return null;

            int intsize = int.Parse(sizeReg.ToString());
            if (registrypath != "Shell Icon Size")
                intsize = intsize / (-15);

            return intsize;
        }

        void SaveSizeToRegistry()
        {
            if (!Size.HasValue) return;

            var key = Registry.CurrentUser.OpenSubKey(@"Control Panel\Desktop\WindowMetrics", true);
            float sizeTemp = -15;

            if (SizeRegistryKey == "Shell Icon Size")
                sizeTemp = Size.Value;
            else
                sizeTemp = -15 * Size.Value;

            key.SetValue(SizeRegistryKey, sizeTemp, RegistryValueKind.String);
            key.Close();
        }

        public void SaveToRegistry()
        {

            base.SaveColorToRegistry();
            SaveSizeToRegistry();
            IsEdited = false;
        }
    }
}