[轉]C#重繪TabControl的Tabpage標簽，添加圖片及關閉按鈕

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();

             //繪制的方式OwnerDrawFixed表示由窗體繪制大小也一樣

             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標簽圖片

         Bitmap image = new  Bitmap( "E:\\ico_close.gif" );

 

         //繪制“Ｘ”號即關閉按鈕

         private  void  MainTabControl_DrawItem( object  sender, DrawItemEventArgs e)

         {

             try

             {

                 Rectangle myTabRect = this .MainTabControl.GetTabRect(e.Index);

 

                 //先添加TabPage屬性  

                 e.Graphics.DrawString( this .MainTabControl.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)

             { }

         }

 

         //關閉按鈕功能

         private  void  MainTabControl_MouseDown( object  sender, MouseEventArgs e)

         {

             if  (e.Button == MouseButtons.Left)

             {

                 int  x = e.X, y = e.Y;

                 //計算關閉區域  

                 Rectangle myTabRect = this .MainTabControl.GetTabRect( this .MainTabControl.SelectedIndex);

 

                 myTabRect.Offset(myTabRect.Width - (CLOSE_SIZE + 3), 2);

                 myTabRect.Width = CLOSE_SIZE;

                 myTabRect.Height = CLOSE_SIZE;

 

                 //如果鼠標在區域內就關閉選項卡  

                 bool  isClose = x > myTabRect.X && x < myTabRect.Right && y > myTabRect.Y && y < myTabRect.Bottom;

                 if  (isClose == true )

                 {

                     this .MainTabControl.TabPages.Remove( this .MainTabControl.SelectedTab);

                 }

             }

         }

     }

}

可以加一個imageList，然后設置tabControl的imageList屬性，再設置各個tab的ImageIndex或ImageKey屬性，即可，只不過這樣圖標會在文本的左側。如同所示：