C#TabControl重写（添加关闭与添加按钮）

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using VideoBrowser.Properties;

namespace VideoBrowser.UI
{
    public partial class MenuTabControl : System.Windows.Forms.TabControl
    {
        public MenuTabControl（）
        {
            InitializeComponent（）;
            TabSet（）;

        }

        private void InitializeComponent（）
        {
            this.SuspendLayout（）;
            this.DrawItem += new System.Windows.Forms.DrawItemEventHandler（this.tabMenu_DrawItem）;
            this.DrawMode = TabDrawMode.OwnerDrawFixed;
            this.MouseDown += new System.Windows.Forms.MouseEventHandler（this.MainTabControl_MouseDown）;
            this.ResumeLayout（false）;
        }

        public void AddPage（MouseEventArgs eTabPage page）
        {
            if （e.Button == MouseButtons.Left）
            {
                int x = e.X y = e.Y;
                Rectangle r = this.GetTabRect（0）;
                int tx = （int）（（r.Width * this.TabCount））;
                r.Offset（tx 0）;
                r.Width = 30;
                r.Height = 30;
                int longw=（（this.TabCount+1） * this.ItemSize.Width + 30）;
                if （this.Width < longw）
                {
                    page.Dispose（）;
                    return;
                }
                bool isAdd = x > r.X && x < r.Right && y > r.Y && y < r.Bottom;
                if （isAdd）
                {
                    this.Controls.Add（page）;
                }
                else
                {
                    page.Dispose（）;
                }
            }
        }

        Color SelectedColor = Color.LightSkyBlue;
        Color MoveColor = Color.White;
        Color FontColor = Color.Black;
        int TextLeft = 10;
        [Browsable（true）]
        [Description（“选项卡标题左边距“） Category（“TextLeft“） DefaultValue（typeof（Int32） “10“）]
        public int titleTextLeft
        {
            get
            {
                return TextLeft;
            }
            set
            {
                this.TextLeft = value;
            }

        }

        [Browsable（true）]
        [Description（“选项卡标题字体颜色“） Category（“titleColor“） DefaultValue（typeof（Color） “Black“）]
        public Color titleFontColor
        {
            get
            {
                return FontColor;
            }
            set
            {
                this.FontColor = value;
            }

        }

        [Browsable（true）]
        [Description（“选项卡标题字体选中颜色“） Category（“titleColor“） DefaultValue（typeof（Color） “LightSkyBlue“）]
        public Color titleSelectedColor
        {
            get
            {
                return SelectedColor;
            }
            set
            {
                this.SelectedColor = valu