C#重绘TabControl的Tabpage标签，添加图片及关闭按钮

以下就是C#重绘TabControl控件的源码:效果如同所示：

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 WindowsFormsApplication1.june
{
public partial class TabTest : Form
{
public TabTest()
{
InitializeComponent();
}

private void TabTest_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);
}

const int CLOSE_SIZE = 15;
//tabPage标签图片
Bitmap image = new Bitmap("E:\\ico_close.gif");

//绘制“Ｘ”号即关闭按钮
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))
{
////=============================================
//自己画X
////"\"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);

////=============================================
//使用图片
Bitmap bt = new Bitmap(image);
Point p5 = new Point(myTabRect.X, 4);
e.Graphics.DrawImage(bt, p5);
//e.Graphics.DrawString(this.MainTabControl.TabPages[e.Index].Text, this.Font, objpen.Brush, p5);
}
e.Graphics.Dispose();
}
catch (Exception)
{ }
}

//关闭按钮功能
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);
}
}
}
}
}

可以加一个imageList，然后设置tabControl的imageList属性，再设置各个tab的ImageIndex或ImageKey属性，即可，只不过这样图标会在文本的左侧。如同所示：



还有办法是重写了个tabControl，继承一个tabControl，然后建一个资源文件夹，在里面添加你需要的图片，在OnDrawItem时你重绘一下就好了，然后判断OnMouseEnter事件时修改矩形框的图片（从资源文件夹里获取）！可以参考示例http://www.codeproject.com/KB/dotnet/CustomTabControl.aspx