WinForms switch control

SwitchControl.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Drawing.Drawing2D;

namespace Switch
{
    public partial class CustomCheckBox : CheckBox
    {
        [Browsable(true)]
        [Description("Ask before change")]
        [Category("CustomCheckBox")]
        public bool AskBeforeChange { get; set; } = false;

        [Browsable(true)]
        [Description("Ask before change")]
        [Category("CustomCheckBox")]
        public string MessageBeforeChange { get; set; } = string.Empty;

        public CustomCheckBox()
        {
            SetStyle(ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint, true);
            Padding = new Padding(6);
        }
        protected override void OnPaint(PaintEventArgs e)
        {
            this.OnPaintBackground(e);
            e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
            using (GraphicsPath path = new GraphicsPath())
            {
                int d = Padding.All;
                int radius = this.Height - 2 * d;
                path.AddArc(d, d, radius, radius, 90, 180);
                path.AddArc(this.Width - radius - d, d, radius, radius, -90, 180);
                path.CloseFigure();
                e.Graphics.FillPath(Checked ? Brushes.DarkGray : Brushes.LightGray, path);
                radius = Height - 1;
                Rectangle rect = 
                    Checked ? new Rectangle(Width - radius - 1, 0, radius, radius)
                            : new Rectangle(0, 0, radius, radius);
                e.Graphics.FillEllipse(Checked ? Brushes.Green : Brushes.WhiteSmoke, rect);
            }
        }

        protected override void OnClick(EventArgs e)
        {
            if (AskBeforeChange)
            {
                DialogResult result = MessageBox.Show(MessageBeforeChange, "Warning", MessageBoxButtons.OKCancel, MessageBoxIcon.Exclamation);
                if (result != DialogResult.Cancel)
                {
                    Checked = !Checked;
                }
            }
        }

        protected override void OnCheckedChanged(EventArgs e)
        {
            
        }

        [Browsable(false)]
        public new bool AutoCheck => false;
    }
}