C#重绘TabControl控件的源码（转）

  1using System;
  2 using System.Collections.Generic;
  3 using System.ComponentModel;
  4 using System.Data;
  5 using System.Drawing;
  6 using System.Linq;
  7 using System.Text;
  8 using System.Windows.Forms;
  9
 10
 11 namespace TabControlTest
 12 {
 13     public partial class Form1 : Form
 14     {
 15         public Form1()
 16         {
 17             InitializeComponent();
 18         }
 19
 20         const int CLOSE_SIZE = 15;
 21  //tabPage标签图片
 22         Bitmap image = new Bitmap("E:\\1\\2.jpg");
 23 //绘制“Ｘ”号即关闭按钮
 24         private void MainTabControl_DrawItem(object sender, DrawItemEventArgs e)
 25         {
 26
 27             try
 28             {
 29                 Rectangle myTabRect = this.MainTabControl.GetTabRect(e.Index);
 30
 31                 //先添加 TabPage属性   
 32                 e.Graphics.DrawString(this.MainTabControl.TabPages[e.Index].Text
 33                 , this.Font, SystemBrushes.ControlText, myTabRect.X + 2, myTabRect.Y + 2);
 34
 35                 //再画一个矩形框
 36                 using (Pen p = new Pen(Color.White))
 37                 {
 38                     myTabRect.Offset(myTabRect.Width - (CLOSE_SIZE + 3), 2);
 39                     myTabRect.Width = CLOSE_SIZE;
 40                     myTabRect.Height = CLOSE_SIZE;
 41                     e.Graphics.DrawRectangle(p, myTabRect);
 42                  
 43                 }
 44
 45                 //填充矩形框
 46                 Color recColor = e.State == DrawItemState.Selected ? Color.White : Color.White;
 47                 using (Brush b = new SolidBrush(recColor))
 48                 {
 49                     e.Graphics.FillRectangle(b, myTabRect);
 50                 }
 51
 52                 //画关闭符号
 53                 using (Pen objpen = new Pen(Color.Black))
 54                 {
 55                     //"\"线
 56                     Point p1 = new Point(myTabRect.X + 3, myTabRect.Y + 3);
 57                     Point p2 = new Point(myTabRect.X + myTabRect.Width - 3, myTabRect.Y + myTabRect.Height - 3);
 58                     e.Graphics.DrawLine(objpen, p1, p2);
 59
 60                     //"/"线
 61                     Point p3 = new Point(myTabRect.X + 3, myTabRect.Y + myTabRect.Height - 3);
 62                     Point p4 = new Point(myTabRect.X + myTabRect.Width - 3, myTabRect.Y + 3);
 63                     e.Graphics.DrawLine(objpen, p3, p4);
 64                       ////=============================================
 65                     Bitmap bt = new Bitmap(image);
 66                     Point p5 = new Point(myTabRect.X-50, 4);
 67                     e.Graphics.DrawImage(bt, p5);
 68                     //e.Graphics.DrawString(this.MainTabControl.TabPages[e.Index].Text, this.Font, objpen.Brush, p5);
 69                 }
 70
 71
 72                 //绘制小图标              
 73                 //==============================================================================
 74                 //Bitmap bt = new Bitmap("E:\\1\\2.jpg");
 75                 //Point p5 = new Point(4, 4);
 76                 ////e.Graphics.DrawImage(bt, e.Bounds);
 77                 //e.Graphics.DrawImage(bt, p5);
 78                 //Pen pt = new Pen(Color.Red);
 79                 ////e.Graphics.DrawString(this.MainTabControl.TabPages[e.Index].Text, this.Font, pt.Brush, e.Bounds);
 80                 //e.Graphics.DrawString(this.MainTabControl.TabPages[e.Index].Text, this.Font, pt.Brush, p5);
 81
 82                 e.Graphics.Dispose();
 83             }
 84             catch (Exception)
 85             {
 86
 87             }
 88
 89
 90         }
 91         //=======================================================================
 92      
 93 //关闭按钮功能
 94         private void MainTabControl_MouseDown(object sender, MouseEventArgs e)
 95         {
 96             if (e.Button == MouseButtons.Left)
 97             {
 98                 int x = e.X, y = e.Y;
 99
100                 //计算关闭区域   
101                 Rectangle myTabRect = this.MainTabControl.GetTabRect(this.MainTabControl.SelectedIndex);
102
103                 myTabRect.Offset(myTabRect.Width - (CLOSE_SIZE + 3), 2);
104                 myTabRect.Width = CLOSE_SIZE;
105                 myTabRect.Height = CLOSE_SIZE;
106
107                 //如果鼠标在区域内就关闭选项卡   
108                 bool isClose = x > myTabRect.X && x < myTabRect.Right
109                  && y > myTabRect.Y && y < myTabRect.Bottom;
110
111                 if (isClose == true)
112                 {
113                     this.MainTabControl.TabPages.Remove(this.MainTabControl.SelectedTab);
114                 }
115             }
116
117
118         }
119 //初始化页面
120         private void Form1_Load(object sender, EventArgs e)
121         {
122             //清空控件
123             //this.MainTabControl.TabPages.Clear();
124             //绘制的方式 OwnerDrawFixed表示由窗体绘制大小也一样
125             this.MainTabControl.DrawMode = TabDrawMode.OwnerDrawFixed;
126             this.MainTabControl.Padding = new System.Drawing.Point(CLOSE_SIZE, CLOSE_SIZE);
127             this.MainTabControl.DrawItem += new DrawItemEventHandler(this.MainTabControl_DrawItem);
128             this.MainTabControl.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MainTabControl_MouseDown);
129         }
130
131  //添加新的tabPage并修改所有 tabPage标签上面的图片
132         private void button1_Click(object sender, EventArgs e)
133         {
134             TabPage tabtage=new TabPage ();
135             MainTabControl.TabPages.Add(tabtage);
136             MainTabControl.SelectedTab = tabtage;
137             image = new Bitmap("E:\\1\\3.jpg");
138
139
140         }
141 //关闭选中的tabPage
142         private void button2_Click(object sender, EventArgs e)
143         {
144             MainTabControl.TabPages.Remove(MainTabControl.SelectedTab);
145         }
146
147      
148
149     }
150 }