C#重绘TabControl的Tabpage标签，添加图片及关闭按钮

using  System;   
using  System.Collections.Generic;   
using  System.ComponentModel;   
using  System.Data;   
using  System.Drawing;   
using  System.Linq;   
using  System.Text;   
using  System.Windows.Forms;   
  
namespace  TabControlTest   
{   
     public   partial   class  Form1 : Form   
    {   
         public  Form1()   
        {   
            InitializeComponent();   
        }   
  
         const   int  CLOSE_SIZE  =   15 ;   
        Bitmap image  =   new  Bitmap( " ONE.ico " );   
  
  
         private   void  MainTabControl_DrawItem( object  sender, DrawItemEventArgs e)   
        {   
             try   
            {   
                Rectangle myTabRect  =   this .MainTabControl.GetTabRect(e.Index);   
  
                 // 先添加TabPage属性      
                e.Graphics.DrawString( this .MainTabControl.TabPages[e.Index].Text   
                ,  this .Font, SystemBrushes.ControlText, myTabRect.X  +   2 , myTabRect.Y  +   2 );   
  
                 // 再画一个矩形框   
                 using  (Pen p  =   new  Pen(Color.White))   
                {   
                    myTabRect.Offset(myTabRect.Width  -  (CLOSE_SIZE  +   3 ),  2 );   
                    myTabRect.Width  =  CLOSE_SIZE;   
                    myTabRect.Height  =  CLOSE_SIZE;   
                    e.Graphics.DrawRectangle(p, myTabRect);   
  
                }   
  
                 // 填充矩形框   
                Color recColor  =  e.State  ==  DrawItemState.Selected  ?  Color.White : Color.White;   
                 using  (Brush b  =   new  SolidBrush(recColor))   
                {   
                    e.Graphics.FillRectangle(b, myTabRect);   
                }   
  
                 // 画关闭符号   
                 using  (Pen objpen  =   new  Pen(Color.Black))   
                {   
                     // "\"线   
                    Point p1  =   new  Point(myTabRect.X  +   3 , myTabRect.Y  +   3 );   
                    Point p2  =   new  Point(myTabRect.X  +  myTabRect.Width  -   3 , myTabRect.Y  +  myTabRect.Height  -   3 );   
                    e.Graphics.DrawLine(objpen, p1, p2);   
  
                     // "/"线   
                    Point p3  =   new  Point(myTabRect.X  +   3 , myTabRect.Y  +  myTabRect.Height  -   3 );   
                    Point p4  =   new  Point(myTabRect.X  +  myTabRect.Width  -   3 , myTabRect.Y  +   3 );   
                    e.Graphics.DrawLine(objpen, p3, p4);   
                     /// /=============================================   
                    Bitmap bt  =   new  Bitmap(image);   
                    Point p5  =   new  Point(myTabRect.X  -   50 ,  4 );   
                    e.Graphics.DrawImage(bt, p5);   
                     // e.Graphics.DrawString(this.MainTabControl.TabPages[e.Index].Text, this.Font, objpen.Brush, p5);   
                }   
  
  
                 // 绘制小图标                 
                 // ==============================================================================   
                 // Bitmap bt = new Bitmap("E:\\1\\2.jpg");   
                 // Point p5 = new Point(4, 4);   
                 /// /e.Graphics.DrawImage(bt, e.Bounds);   
                 // e.Graphics.DrawImage(bt, p5);   
                 // Pen pt = new Pen(Color.Red);   
                 /// /e.Graphics.DrawString(this.MainTabControl.TabPages[e.Index].Text, this.Font, pt.Brush, e.Bounds);   
                 // e.Graphics.DrawString(this.MainTabControl.TabPages[e.Index].Text, this.Font, pt.Brush, p5);   
  
                e.Graphics.Dispose();   
            }   
             catch   
            {   
    
            }   
    
        }   
  
         private   void  MainTabControl_MouseDown( object  sender, MouseEventArgs e)   
        {   
              if  (e.Button  ==  MouseButtons.Left)   
             {   
                   int  x  =  e.X, y  =  e.Y;   
  
                 // 计算关闭区域      
                 Rectangle myTabRect  =   this .MainTabControl.GetTabRect( this .MainTabControl.SelectedIndex);   
    
                 myTabRect.Offset(myTabRect.Width  -  (CLOSE_SIZE  +   3 ),  2 );   
                 myTabRect.Width  =  CLOSE_SIZE;   
                 myTabRect.Height  =  CLOSE_SIZE;   
    
                  // 如果鼠标在区域内就关闭选项卡      
                  bool  isClose  =  x  >  myTabRect.X  &&  x  <  myTabRect.Right   
                   &&  y  >  myTabRect.Y  &&  y  <  myTabRect.Bottom;   
    
                  if  (isClose  ==   true )   
                 {   
                      this .MainTabControl.TabPages.Remove( this .MainTabControl.SelectedTab);   
                 }   
             }   
    
  
        }   
  
          // 初始化页面   
          private   void  Form1_Load( object  sender, EventArgs e)   
         {   
              // 清空控件   
              // this.MainTabControl.TabPages.Clear();   
              // 绘制的方式OwnerDrawFixed表示由窗体绘制大小也一样   
              this .MainTabControl.DrawMode  =  TabDrawMode.OwnerDrawFixed;   
              this .MainTabControl.Padding  =   new  System.Drawing.Point(CLOSE_SIZE, CLOSE_SIZE);   
              this .MainTabControl.DrawItem  +=   new  DrawItemEventHandler( this .MainTabControl_DrawItem);   
              this .MainTabControl.MouseDown  +=   new  System.Windows.Forms.MouseEventHandler( this .MainTabControl_MouseDown);   
         }   
  
          // 添加新的tabPage并修改所有tabPage标签上面的图片   
          private   void  button1_Click( object  sender, EventArgs e)   
         {   
             TabPage tabtage  =   new  TabPage();   
             MainTabControl.TabPages.Add(tabtage);   
             MainTabControl.SelectedTab  =  tabtage;   
             image  =   new  Bitmap( " ONE.ico " );   
  
  
         }   
          // 关闭选中的tabPage   
          private   void  button2_Click( object  sender, EventArgs e)   
         {   
             MainTabControl.TabPages.Remove(MainTabControl.SelectedTab);   
         }   
    }   
}