C# 重绘tabControl，添加关闭按钮，页签

C# 重绘tabControl，添加关闭按钮（页签）

调用方法

参数：

 /// <summary>
        /// 初始化
        /// </summary>
        /// <param name="tabcontrol">TacControl控件</param>
        /// <param name="fo">主程序this.Font</param>

 DrawTabControl dtc=new DrawTabControl(tabControl1,this.Font);
dtc.ClearPage();

类　

 #region 重绘tablecontrol
    public class DrawTabControl
    {
        TabControl tabControl1 = null;
        Font font1 = null;
        public DrawTabControl() { }
        public DrawTabControl(TabControl tabcontrol,Font fo)
        {
            tabControl1 = tabcontrol;
            font1 = fo;
        }

        const int CLOSE_SIZE = 15;
        //tabPage标签图片
        Bitmap image = new Bitmap("D:\\power_003.png");

        public void ClearPage()
        {

            //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.tabControl1.DrawMode = TabDrawMode.OwnerDrawFixed;
            this.tabControl1.Padding = new System.Drawing.Point(CLOSE_SIZE, CLOSE_SIZE - 8);
            this.tabControl1.DrawItem += new DrawItemEventHandler(this.tabControl1_DrawItem);
            this.tabControl1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.tabControl1_MouseDown);
        }

        private void tabControl1_DrawItem(object sender, DrawItemEventArgs e)
        {
            try
            {
                Rectangle myTabRect = this.tabControl1.GetTabRect(e.Index);

                //先添加TabPage属性   
                e.Graphics.DrawString(this.tabControl1.TabPages[e.Index].Text, this.font1, 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.font1, objpen.Brush, p5);
                }
                e.Graphics.Dispose();
            }
            catch (Exception)
            { }
        }

        private void tabControl1_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.tabControl1.GetTabRect(this.tabControl1.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.tabControl1.TabPages.Remove(this.tabControl1.SelectedTab);
                }
            }
        }

    }
     #endregion