Add a close button to Tabpages of RightToleft TabControl

In this article we will see how to add a close button to Tabpages of RightToleft TabControl like this:

It is almost the same thing as LeftToRight TabControl unless we add a function that transform the coordinates of a rectangle to RightToleft coordinates in a container:

public static Rectangle GetRTLCoordinates(Rectangle container, Rectangle drawRectangle)
        {
            return new Rectangle(
                container.Width - drawRectangle.Width - drawRectangle.X,
                drawRectangle.Y,
                drawRectangle.Width,
                drawRectangle.Height);
        } 

Declare CloseImage and add code to Form_Load event:

Image CloseImage;

private void Form1_Load(object sender, EventArgs e)
        {
            tabControl1.DrawMode = TabDrawMode.OwnerDrawFixed;
            tabControl1.DrawItem += tabControl1_DrawItem;
            CloseImage = WindowsFormsApplication1.Properties.Resources.closeR;
            tabControl1.Padding = new Point(10, 3);
        }

Over-write Draw_Item method of TabControl:

private void TabControl1_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
        {
            try
            {
                var tabRect = this.tabControl1.GetTabRect(e.Index);
                tabRect.Inflate(-2, -2);
                var imageRect = new Rectangle(tabRect.Right - CloseImage.Width,
                                         tabRect.Top + (tabRect.Height - CloseImage.Height) / 2,
                                         CloseImage.Width,
                                         CloseImage.Height);

                var sf = new StringFormat(StringFormat.GenericDefault);
                if (this.tabControl1.RightToLeft == System.Windows.Forms.RightToLeft.Yes &&
                    this.tabControl1.RightToLeftLayout == true)
                {
                    tabRect = GetRTLCoordinates(this.tabControl1.ClientRectangle, tabRect);
                    imageRect = GetRTLCoordinates(this.tabControl1.ClientRectangle, imageRect);
                    sf.FormatFlags |= StringFormatFlags.DirectionRightToLeft;
                }

                e.Graphics.DrawString(this.tabControl1.TabPages[e.Index].Text,this.Font, Brushes.Black, tabRect, sf);
                e.Graphics.DrawImage(CloseImage, imageRect.Location);

            }
            catch (Exception) { }
        }

Then add this code in Mouse_Click event of the TabControl:

for (var i = 1; i < this.tabControl1.TabPages.Count; i++)
            {
                var tabRect = this.tabControl1.GetTabRect(i);
                tabRect.Inflate(-2, -2);
                var imageRect = new Rectangle(tabRect.Right - CloseImage.Width,
                                         tabRect.Top + (tabRect.Height - CloseImage.Height) / 2,
                                         CloseImage.Width,
                                         CloseImage.Height);
                if (imageRect.Contains(e.Location))
                {
                    this.tabControl1.TabPages.RemoveAt(i);
                    break;
                }
            }

For more understanding, check out this video: