System.Windows.Forms.CustomTabControl.GetTabCloserRect C# (CSharp) Method

        public Rectangle GetTabCloserRect(int index)
        {
            Rectangle closerRect = new Rectangle();
            using (GraphicsPath path = this._StyleProvider.GetTabBorder(index)){
                RectangleF rect = path.GetBounds();

                //	Make it shorter or thinner to fit the height or width because of the padding added to the tab for painting
                switch (this.Alignment) {
                    case TabAlignment.Top:
                        rect.Y += 4;
                        rect.Height -= 6;
                        break;
                    case TabAlignment.Bottom:
                        rect.Y += 2;
                        rect.Height -= 6;
                        break;
                    case TabAlignment.Left:
                        rect.X += 4;
                        rect.Width -= 6;
                        break;
                    case TabAlignment.Right:
                        rect.X += 2;
                        rect.Width -= 6;
                        break;
                }
                if (this.Alignment <= TabAlignment.Bottom) {
                    if (this.RightToLeftLayout){
                        closerRect = new Rectangle((int)rect.Left, (int)rect.Y + (int)Math.Floor((double)((int)rect.Height - 6)/2), 6, 6);
                        while (!path.IsVisible(closerRect.Left, closerRect.Y) && closerRect.Right < this.Width) {
                            closerRect.X += 1;
                        }
                        closerRect.X += 4;
                    } else {
                        closerRect = new Rectangle((int)rect.Right, (int)rect.Y + (int)Math.Floor((double)((int)rect.Height - 6)/2), 6, 6);
                        while (!path.IsVisible(closerRect.Right, closerRect.Y) && closerRect.Right > -6) {
                            closerRect.X -= 1;
                        }
                        closerRect.X -= 4;
                        }
                } else {
                    if (this.RightToLeftLayout){
                        closerRect = new Rectangle((int)rect.X + (int)Math.Floor((double)((int)rect.Width - 6)/2), (int)rect.Top, 6, 6);
                        while (!path.IsVisible(closerRect.X, closerRect.Top) && closerRect.Bottom < this.Height) {
                            closerRect.Y += 1;
                        }
                        closerRect.Y += 4;
                    } else {
                        closerRect = new Rectangle((int)rect.X + (int)Math.Floor((double)((int)rect.Width - 6)/2), (int)rect.Bottom, 6, 6);
                        while (!path.IsVisible(closerRect.X, closerRect.Bottom) && closerRect.Top > -6) {
                            closerRect.Y -= 1;
                        }
                        closerRect.Y -= 4;
                    }
                }
            }
            return closerRect;
        }

        protected virtual void DrawTabCloser(int index, Graphics graphics)
        {
            if (_ShowTabCloser)
            {
                Rectangle closerRect = _TabControl.GetTabCloserRect(index);
                graphics.SmoothingMode = SmoothingMode.AntiAlias;

                using (GraphicsPath closerPath = GetCloserPath(closerRect))
                {
                    if (closerRect.Contains(_TabControl.MousePosition))
                    {
                        using (var closerPen = new Pen(_CloserColorActive))
                            graphics.DrawPath(closerPen, closerPath);
                    }
                    else
                    {
                        using (var closerPen = new Pen(_CloserColor))
                            graphics.DrawPath(closerPen, closerPath);
                    }
                }
            }
        }