public frm_editor()
 {
     InitializeComponent();
     srt_ac = new SyntaxRichTextBox();
     YeniSekme(null, null);
     colorTabControl1.AllowDrop  = true;
     colorTabControl1.DragEnter += new DragEventHandler(colorTabControl1_DragEnter);
     colorTabControl1.DragDrop  += new DragEventHandler(colorTabControl1_DragDrop);
 }
        public void YeniSekme(object sender, EventArgs e)
        {
            TabPage sayfa = new TabPage();

            sayfa.Text         = "Yeni Sekme";
            sayfa.ForeColor    = Color.White;
            srt_ac             = new SyntaxRichTextBox();
            srt_ac.Dock        = DockStyle.Fill;
            srt_ac.BorderStyle = BorderStyle.None;
            srt_ac.ScrollBars  = RichTextBoxScrollBars.Both;
            srt_ac.WordWrap    = false;
            srt_ac.ForeColor   = Color.White;
            srt_ac.BackColor   = Color.FromArgb(30, 30, 30);
            srt_ac.Settings.Keywords.Clear();
            srt_ac.Settings.KeywordColor = Color.White;
            srt_ac.Settings.Keywords.AddRange(new string[] { "null" });
            srt_ac.Settings.Comment        = "";
            srt_ac.Settings.EnableStrings  = false;
            srt_ac.Settings.EnableIntegers = false;
            srt_ac.AcceptsTab = true;
            srt_ac.MouseDown += delegate(object sender2, MouseEventArgs ev)
            {
                if (ev.Button == System.Windows.Forms.MouseButtons.Right)
                {
                    ContextMenu contextMenu = new System.Windows.Forms.ContextMenu();

                    MenuItem menuItem = new MenuItem("Kes");
                    menuItem.Click += delegate
                    {
                        try
                        {
                            srt_ac.Cut();
                        }
                        catch { }
                    };
                    contextMenu.MenuItems.Add(menuItem);
                    menuItem        = new MenuItem("Kopyala");
                    menuItem.Click += delegate
                    {
                        try
                        {
                            Clipboard.SetText(srt_ac.SelectedText);
                        }
                        catch { }
                    };
                    contextMenu.MenuItems.Add(menuItem);
                    menuItem        = new MenuItem("Yapıştır");
                    menuItem.Click += delegate
                    {
                        if (Clipboard.ContainsText())
                        {
                            srt_ac.Text += Clipboard.GetText(TextDataFormat.Text).ToString();
                        }
                    };
                    contextMenu.MenuItems.Add(menuItem);
                    menuItem        = new MenuItem("Hepsini Seç");
                    menuItem.Click += delegate
                    {
                        try
                        {
                            srt_ac.SelectAll();
                            srt_ac.Focus();
                        }
                        catch { }
                    };
                    contextMenu.MenuItems.Add(menuItem);
                    srt_ac.ContextMenu = contextMenu;
                }
            };
            srt_ac.KeyPress += delegate(object sender2, KeyPressEventArgs ev) {
                if (ev.KeyChar == 9)
                {
                    ev.Handled = false;
                }
            };
            srt_ac.CompileKeywords();
            sayfa.Controls.Add(srt_ac);           //pagevievpagede usercontrolü aç
            colorTabControl1.Controls.Add(sayfa); //sekme olarak ekler
            colorTabControl1.SelectedTab = sayfa; //yeni sekme açıldığında aktif sayfa ol
        }