C# 重繪tabControl，添加關閉按鈕（頁簽）

標籤：

 #region 重繪tablecontrol        const int CLOSE_SIZE = 15;        //tabPage標籤圖片        Bitmap image = new Bitmap("D:\\power_003.png");        public void ClearPage()        {            //清空控制項            //this.MainTabControl.TabPages.Clear();            //繪製的方式OwnerDrawFixed表示由表單繪製大小也一樣            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屬性                   e.Graphics.DrawString(this.tabControl1.TabPages[e.Index].Text, this.Font, SystemBrushes.ControlText, myTabRect.X + 2, myTabRect.Y +2);                //再畫一個矩形框                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);                }                //畫關閉符號                using (Pen objpen = new Pen(Color.Black))                {                    ////=============================================                    //自己畫X                    ////"\"線                    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);                    ////"/"線                    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);                    ////=============================================                    //使用圖片                    //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)            { }        }        private void tabControl1_MouseDown(object sender, MouseEventArgs e)        {            if (e.Button == MouseButtons.Left)            {                int x = e.X, y = e.Y;                //計算關閉地區                   Rectangle myTabRect = this.tabControl1.GetTabRect(this.tabControl1.SelectedIndex);                myTabRect.Offset(myTabRect.Width - (CLOSE_SIZE + 3), 2);                myTabRect.Width = CLOSE_SIZE;                myTabRect.Height = CLOSE_SIZE;                //如果滑鼠在地區內就關閉選項卡                   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 

運行效果 ：

C# 重繪tabControl，添加關閉按鈕（頁簽）