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