System.Windows.Forms.TabControl.GetTabRect C# (CSharp) Method

		public Rectangle GetTabRect (int index)
		{
			TabPage page = GetTab (index);
			return page.TabBounds;
		}

 protected override void WndProc(ref Message m)
 {
     base.WndProc(ref m);
     // Selection of tabs via mouse
     if (m.Msg == 0x201 /*WM_LBUTTONDOWN*/)
     {
         System.Windows.Forms.TabControl control = (System.Windows.Forms.TabControl)Component;
         int   lParam   = m.LParam.ToInt32();
         Point hitPoint = new Point(lParam & 0xffff, lParam >> 0x10);
         if (Control.FromHandle(m.HWnd) == null)               // Navigation
         {
             if (hitPoint.X < 18 && control.SelectedIndex > 0) // Left
             {
                 control.SelectedIndex--;
             }
             else
             {
                 control.SelectedIndex++;      // Right
             }
         }
         else     // Header click
         {
             for (int i = 0; i < control.TabCount; i++)
             {
                 if (control.GetTabRect(i).Contains(hitPoint))
                 {
                     control.SelectedIndex = i;
                     return;
                 }
             }
         }
     }
 }