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);
}
}
}