在窗体加载时,注册以下事件
this.MainTabControl.DrawMode = TabDrawMode.OwnerDrawFixed;
this.MainTabControl.Padding = new System.Drawing.Point(CLOSE_SIZE, 5);
this.MainTabControl.DrawItem += new DrawItemEventHandler(this.MainTabControl_DrawItem);
this.MainTabControl.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MainTabControl_MouseDown);
以下事件处理方法
const int CLOSE_SIZE = 15;
//Bitmap image = new Bitmap("E:\\XX.gif");
private void MainTabControl_DrawItem(object sender, DrawItemEventArgs e)
{
try
{
//获取当前Tab选项卡的绘图区域
Rectangle myTabRect = this.MainTabControl.GetTabRect(e.Index);
//绘制标签头背景色
using (Brush brBack = new SolidBrush(Color.Yellow))
{
if (e.Index == this.MainTabControl.SelectedIndex)
{
e.Graphics.FillRectangle(brBack, myTabRect); //设置当前选中的tabgage的背景色
}
}
//先添加TabPage属性
e.Graphics.DrawString(this.MainTabControl.TabPages[e.Index].Text,
this.Font, SystemBrushes.ControlText, myTabRect.X + 2, myTabRect.Y + 2);
//再画一个矩形框
using (Pen p = new Pen(Color.Transparent))
{
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.Transparent : Color.Transparent;
using (Brush b = new SolidBrush(recColor))
{
e.Graphics.FillRectangle(b, myTabRect);
}
//画Tab选项卡右上方关闭按钮
using (Pen objpen = new Pen(Color.SlateBlue, 1.8f))
{
//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);//获取绘图区域的开始坐标位置
//e.Graphics.DrawImage(bt, p5);
}
e.Graphics.Dispose();
}
catch (Exception)
{
}
}
//关闭按钮功能
private void MainTabControl_MouseDown(object sender, MouseEventArgs e)
{
if (!String.IsNullOrEmpty(this.MainTabControl.SelectedTab.Text))
{
if (e.Button == MouseButtons.Left)
{
int x = e.X, y = e.Y;
//计算关闭区域
Rectangle myTabRect = this.MainTabControl.GetTabRect(this.MainTabControl.SelectedIndex); ;
//myTabRect.Offset(myTabRect.Width - (CLOSE_SIZE + 3), 2);
myTabRect.Offset(myTabRect.Width - 0x12, 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.MainTabControl.TabPages.Remove(this.MainTabControl.SelectedTab);
}
}
}
}