C# richTextBox编辑器

 附件：http://files.cnblogs.com/xe2011/CSHARP_RichTextBoxEditor.rar

 完整的转到这里 http://www.cnblogs.com/xe2011/p/3449333.html

主要的类

using System;
//using System.Collections.Generic;
//using System.Linq;
using System.Text;
using System.Drawing;
//using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Drawing.Printing;
using System.ComponentModel;
using System.IO;
using RichTextBoxCtrl;
using richTextBoxTableClass;
 
#region 添加引用 说明
//右键选中 引用 添加引用
//在“添加引用”对话框中，
//双击“System.Drawing.dll”和
//“System.Windows.Forms.dll”，然后单击“确定”。
#endregion


namespace System.Windows.Forms
{
    public class RichTextBoxCtrl : RichTextBox
    {

        #region RichTextBox初始化属性
        /// <summary>
        /// richTextBox1 = this;
        /// </summary>
        private System.Windows.Forms.RichTextBox richTextBox1;

        public RichTextBoxCtrl()
        {
            richTextBox1 = this;
            AllowDrop = true;
            EnableAutoDragDrop = true;
            AcceptsTab = true;
            HideSelection = false;
            ScrollBars = RichTextBoxScrollBars.Vertical;
            InitialRichTextBoxCtrl();
            
        }
        #endregion

        #region RichTextBox 新建 打开 和 保存 文件对话框

        private string fileName = "未命名.rtf";
        private string absFileName = "";

        //文件名 返回 如 abc.rtf  
        public string FileName
        {
            get{
                return fileName;
            }
        }

        //格式 C:windowsabc.rtf
        public string AbsFileName
        {
            get {
                return absFileName;
            }
        }
        

        /// <summary>
        /// 判断文件是否保存了
        /// </summary>
        private void CheckFileSave()
        {
            if (this.Modified)
            {
                string msg = "";
                if (File.Exists(absFileName))
                    msg = "文档已修改是否保存:" + fileName;
                else
                    msg = "文档已修改是否保存";

                DialogResult Result = MessageBox.Show(msg, "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
                if (Result == DialogResult.Yes)
                {
                    if (File.Exists(absFileName))
                        richTextBox1.SaveFile(absFileName);
                    else
                        this.ShowSaveFileDlg();
                }
            }
        }

        /// <summary>
        /// 新空的文档
        /// </summary>
        public void NewDocument()
        {
            CheckFileSave();

            richTextBox1.Text = "";
            richTextBox1.Modified = false;

            absFileName = "";
            fileName = "";
        }

        /// <summary>
        /// 打开文件
        /// </summary>
        public void ShowOpenFileDlg()
        {
            CheckFileSave();

            OpenFileDialog openFileDialog1 = new OpenFileDialog();
            openFileDialog1.DefaultExt = ".rtf";
            openFileDialog1.Filter = "RTF 文档(*.rtf)|*.rtf|所有文件(*.*)|*.*";
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                LoadFile(openFileDialog1.FileName);
                Modified = false;

                absFileName = openFileDialog1.FileName;
                fileName = Path.GetFileName(absFileName);
            }
        }

        //另存文件
        public void ShowSaveFileDlg()
        {
            SaveFileDialog saveFileDialog1 = new SaveFileDialog();
            saveFileDialog1.DefaultExt = ".rtf";
            saveFileDialog1.Filter = "RTF 文档(*.rtf)|*.rtf|所有文件(*.*)|*.*";
            saveFileDialog1.FileName = FileName;
            if (saveFileDialog1.ShowDialog() == DialogResult.OK)
            {
                SaveFile(saveFileDialog1.FileName);
                Modified = false;
             
                absFileName = saveFileDialog1.FileName;
                fileName = Path.GetFileName(absFileName);
            }
        }
     
        #endregion

        #region 把RTF文件保存为纯文本
       
        /// <summary>
        /// 把RTF文件保存为纯文本
        /// 只保存字符 转换后文本不包括RTF中的图片信息
        /// </summary>
        /// <param name="TextFileName">"C:UsersAdminDesktopCurRoleBase.txt"</param>
        public void SaveToTextFile(string TextFileName)
        {
            this.SaveFile(TextFileName, RichTextBoxStreamType.TextTextOleObjs);
        }
        #endregion

        #region 设置为只读模式

        [DllImport("user32.dll")]
        static extern bool HideCaret(IntPtr hWnd);
       
       
        /// <summary>
        /// HideCaret 
        /// </summary>
        /// <param name="m"></param>
        protected override void WndProc(ref Message m)
        {
            base.WndProc(ref m);
            if (ReadOnly)
                HideCaret(Handle);
        }
        #endregion

        #region 设置 和 获得光标所在的行号和列号
        ///要在本类中初始化 richTextBox1 = this;
        private int EM_LINEINDEX = 0x00BB;
        private int EM_LINEFROMCHAR = 0x00C9;

        [DllImport("user32.dll", EntryPoint = "SendMessage")]
        public static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);

        
        /// <summary>
        /// 获得光标所在的行号和列号
        /// </summary>
        /// <param name="editControl"></param>
        /// <returns>p.X = 行号 p.Y =列号</returns>
        public Point GetCaretPosition()
        {
            int charIndex = (int)SendMessage(richTextBox1.Handle, EM_LINEINDEX, -1, 0);
            int lineIndex = (int)SendMessage(richTextBox1.Handle, EM_LINEFROMCHAR, charIndex, 0);
            Point pt=new Point();
            pt.X = richTextBox1.SelectionStart - charIndex +1;//Line
            pt.Y = lineIndex +1;//Column
            return pt;
        }


        /// <summary>
        /// 转到行
        /// </summary>
        /// <param name="Line">行号</param>
        public void jumpLine(int Line)
        {
            richTextBox1.SelectionStart = SendMessage(richTextBox1.Handle, EM_LINEINDEX, Line - 1, 0);
            richTextBox1.SelectionLength = 0;
            richTextBox1.ScrollToCaret();
        }


        /// <summary>
        /// 有问题 同时设置行号和列号就出现问题了
        /// </summary>
        /// <param name="Column"></param>
        public void jumpColumn(int Column)
        {
            int Line = Column;

            int charIndex = (int)SendMessage(richTextBox1.Handle, EM_LINEINDEX, Line - 1, 0);
            int lineIndex = charIndex + (int)SendMessage(richTextBox1.Handle, EM_LINEFROMCHAR, charIndex, 0);

            richTextBox1.SelectionStart = lineIndex;
        }
        #endregion

        #region RichTextBox 字体样式
        //格式刷


        /// richTextBox1 = this;
        
        /// <summary>
        /// 粗体
        /// </summary>
        public void ToggleBold()
        {
            if (richTextBox1.SelectionFont == null)
                richTextBox1.SelectionFont = richTextBox1.Font;

            FontStyle style = richTextBox1.SelectionFont.Style;

            if (richTextBox1.SelectionFont.Bold)

                style &= ~FontStyle.Bold;//恢复正常
            else
                style |= FontStyle.Bold;

            richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont, style);
        }

        /// <summary>
        /// 斜体
        /// </summary>
        public void ToggleItalic()
        {
            if (richTextBox1.SelectionFont == null)
                richTextBox1.SelectionFont = richTextBox1.Font;

            FontStyle style = richTextBox1.SelectionFont.Style;

            if (richTextBox1.SelectionFont.Italic)
                style &= ~FontStyle.Italic;//恢复正常
            else
                style |= FontStyle.Italic;

            richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont, style);
        }

        /// <summary>
        /// 下划线
        /// </summary>
        public void ToggleUnderLine()
        {
            if (richTextBox1.SelectionFont == null)
                richTextBox1.SelectionFont = richTextBox1.Font;

            FontStyle style = richTextBox1.SelectionFont.Style;

            if (richTextBox1.SelectionFont.Underline)
                style &= ~FontStyle.Underline;//恢复正常
            else
                style |= FontStyle.Underline;

            richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont, style);
        }

        /// <summary>
        /// 删除线
        /// </summary>
        public void ToggleStrikeout()
        {
            if (richTextBox1.SelectionFont == null)
                richTextBox1.SelectionFont = richTextBox1.Font;

            FontStyle style = richTextBox1.SelectionFont.Style;

            if (richTextBox1.SelectionFont.Strikeout)
                style &= ~FontStyle.Strikeout;//恢复正常
            else
                style |= FontStyle.Strikeout;
            richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont, style);
        }
       

        //标题1 ，标题2....
        public void SetFontFormat(int index)
        {
             richTextBoxFontFormatClass FontFormat1 = new richTextBoxFontFormatClass();
             FontFormat1.richTextBox = this;
             FontFormat1.SetFontFormat(index);
        }

        public string GetFontFormat()
        {
            richTextBoxFontFormatClass FontFormat1 = new richTextBoxFontFormatClass();
            FontFormat1.richTextBox = this;
            return FontFormat1.GetFontFormat();
        }

        /// <summary>
        /// 设置上标
        /// </summary>
        [Browsable(false)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public bool SelectionSupperScript
        {
            get
            {
                return (SelectionCharOffset == 4);
            }
            set
            {
                if (SelectionCharOffset == 0)
                {
                    SelectionCharOffset =  4;
                }
                else
                {
                    SelectionCharOffset = 0;
                }
            }
        }

        /// <summary>
        /// 设置下标
        /// </summary>
        [Browsable(false)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public bool SelectionSubScript
        {
            get
            {
                return (SelectionCharOffset == -4);
            }
            set
            {
                if (SelectionCharOffset == 0)
                {
                    SelectionCharOffset = -4;
                }
                else
                {
                    SelectionCharOffset = 0;
                }

            }
        }
 

        /// <summary>
        ///RichTextBox  数字序列 1. 2. 3. 4. 5.  ... 
        /// </summary>
        [Browsable(false)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public bool SelectionOrderList
        {
            get
            {
                richTextBoxBulletClass r = new richTextBoxBulletClass();
                r.richTextBox = this;
                return r.SelectionOrderList;
            }
            set
            {
                richTextBoxBulletClass r = new richTextBoxBulletClass();
                r.richTextBox = this;
                r.SelectionOrderList = value;
            }
        }
     
    
        //只须设置 不需要获得是否设置的返回值
        ////Tab->
        public void Indent()
        {
            SelectionIndent += 8;
        }
        ////Tab <-
        public void OutIndent()
        {
            SelectionIndent -= 8;
        }

        #endregion

        #region  RichTextBox Margin
        private struct Rect
        {
            public int Left;
            public int Top;
            public int Right;
            public int Bottom;
        }

        [DllImport("user32.dll")]
        private static extern int SendMessage(IntPtr hwnd, int wMsg, IntPtr wParam, ref Rect lParam);

        private const int EM_GETRECT = 0x00b2;
        private const int EM_SETRECT = 0x00b3;

        /// <summary>
        /// 当没设置的时候结果多出了L T R +2
        /// </summary>
        private Rect RichTextBoxMargin
        {
            get
            {
                Rect rect = new Rect();
                SendMessage(richTextBox1.Handle, EM_GETRECT, IntPtr.Zero, ref rect);
                rect.Left += 1;
                rect.Top += 1;
                rect.Right = 1 + richTextBox1.DisplayRectangle.Width - rect.Right;
                rect.Bottom = richTextBox1.DisplayRectangle.Height - rect.Bottom;
                return rect;
            }
            set
            {
                Rect rect;
                rect.Left = richTextBox1.ClientRectangle.Left + value.Left;
                rect.Top = richTextBox1.ClientRectangle.Top + value.Top;
                rect.Right = richTextBox1.ClientRectangle.Right - value.Right;
                rect.Bottom = richTextBox1.ClientRectangle.Bottom - value.Bottom;

                SendMessage(richTextBox1.Handle, EM_SETRECT, IntPtr.Zero, ref rect);
            }

        }

        [Browsable(true)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public int LeftMargin
        {
            get
            {
                return RichTextBoxMargin.Left;
            }
            set
            {
                Rect rect1;
                rect1 = RichTextBoxMargin;

                Rect rect;
                rect.Left = value;
                rect.Top = 0;//rect1.Top;
                rect.Right = rect1.Right;
                rect.Bottom = rect1.Bottom;

                RichTextBoxMargin = rect;
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public  int RightMargin
        {
            get
            {
                return RichTextBoxMargin.Right;
            }
            set
            {
                Rect rect1;
                rect1 = RichTextBoxMargin;

                Rect rect;
                rect.Left = rect1.Left;
                rect.Top = rect1.Top;
                rect.Right = value;
                rect.Bottom = rect1.Bottom;

                RichTextBoxMargin = rect;
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public int TopMargin
        {
            get
            {
                return RichTextBoxMargin.Top;
            }
            set
            {
                Rect rect1;
                rect1 = RichTextBoxMargin;

                Rect rect;
                rect.Left = rect1.Left;
                rect.Top = value;
                rect.Right = rect1.Right;
                rect.Bottom = rect1.Bottom;

                RichTextBoxMargin = rect;
            }
        }
        [Browsable(false)]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public int BottomMargin
        {
            get
            {
                return RichTextBoxMargin.Bottom;
            }
            set
            {
                Rect rect1;
                rect1 = RichTextBoxMargin;

                Rect rect;
                rect.Left = rect1.Left;
                rect.Top = rect1.Top;
                rect.Right = rect1.Right;
                rect.Bottom = value;
                RichTextBoxMargin = rect;
            }
        }

#endregion
        
        #region RichTextBox 默认快捷键
        /*
            查找    CTRL+F
            替换    CTRL+R
            时间日期     F5

            粗体    CTRL+B
            斜体    CTRL+I
            下划线    CTRL+U
         */

        protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
        {
            if (!this.ReadOnly)
            {
                switch (keyData)
                {
                    //CTRL+B
                    case Keys.Control | Keys.B:
                        ToggleBold();
                        return true;

                    //CTRL+I
                    case Keys.Control | Keys.I:
                        ToggleItalic();
                        return true;

                    //CTRL+U
                    case Keys.Control | Keys.U:
                        ToggleUnderLine();
                        return true;

                    //shift +tab 左缩进
                    case Keys.Shift | Keys.Tab:
                        if (SelectedText != "")
                        {
                            SelectionIndent -= 8;
                        }
                        return true;

                    //shift +tab 右缩进
                    case Keys.Tab:
                        if (SelectedText != "")
                        {
                            SelectionIndent += 8;
                          
                        }
                        return true;

                    //替换对话框
                    case Keys.Control | Keys.R:
                        ShowReplaceDlg();
                        return true;

                    //插入时间日期
                    case Keys.F5:
                        //2013-11-25 13:57:09
                        SelectedText = DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss");
                        return true;

                    //粘贴纯文本
                    case Keys.Control | Keys.Shift | Keys.V:
                        PasteAsText();
                        return true;

                    case Keys.Control | Keys.G:
                        ShowGoToDlg();
                return true;

                }
            }
 
            if (keyData == (Keys.Control | Keys.F))
            {
                ShowFindDlg();
            }
            return false;
        }


        #endregion

        #region RichTextBox 常用属性

        public void PasteAsText()
        {
            richTextBox1.SelectedText = Clipboard.GetText(); //粘贴纯文本
        }

        public void PasteAsBmp()
        {
            if (CanPasteAsBmp())
            {
                richTextBox1.Paste();
            }
        }

        public void  PasteAsHtml()
        {
           
        }

        public void PasteAsUnicode()
        {

        }

        /// <summary>
        /// 剪切板是否为空
        /// </summary>
        /// <returns></returns>
        public  bool CanPaste()
        {
            return (Clipboard.GetDataObject() != null);
        }

        /// <summary>
        /// 剪切板是否有字符串
        /// </summary>
        /// <returns></returns>
        public bool CanPasteAsText()
        {
            return Clipboard.GetDataObject().GetDataPresent(DataFormats.Text); 
        }
        /// <summary>
        /// 剪切板是否有位图
        /// </summary>
        /// <returns></returns>
        public bool CanPasteAsBmp()
        {
            return Clipboard.GetDataObject().GetDataPresent(DataFormats.Bitmap); 
        }
        /// <summary>
        /// 剪切板是否HTML
        /// </summary>
        /// <returns></returns>
        public bool CanPasteAsHtml()
        {
            return Clipboard.GetDataObject().GetDataPresent(DataFormats.Html); 
        }

        /// <summary>
        /// 是否可以全选
        /// </summary>
        /// <returns></returns>
        public bool CanSelectAll()
        {
            return (richTextBox1.SelectedText.Length != richTextBox1.Text.Length);
        }

        private void InitialRichTextBoxCtrl()
        {
            //ContextMenuStrip = contextMenuStrip1;
            LinkClicked += new System.Windows.Forms.LinkClickedEventHandler(richTextBox1_LinkClicked); 
        }

        /// <summary>
        /// 自动打开超链接
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void richTextBox1_LinkClicked(object sender, LinkClickedEventArgs e)
        {
            DialogResult b = MessageBox.Show("你要打开此链接吗?
" + e.LinkText, "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);
            if (b == DialogResult.Yes)
            {
                System.Diagnostics.Process.Start("iexplore.exe", e.LinkText);
            }
        }


        #endregion

        #region RichTextBox 通用对话框

        //private FindDialog FindDlg = new FindDialog();
        //private ReplaceDialog ReplaceDlg=new ReplaceDialog();

        /// <summary>
        /// 查找对话框
        /// </summary>
        public void ShowFindDlg()
        {
            FindDialog FindDlg = new FindDialog();
            FindDlg.richTextBox1 = this;
            FindDlg.textBox1.Text = this.SelectedText;
            FindDlg.StartPosition = FormStartPosition.CenterParent;
            FindDlg.ShowDialog();
        }

        /// <summary>
        /// 替换 对话框
        /// </summary>
        public void ShowReplaceDlg()
        {
            ReplaceDialog ReplaceDlg = new ReplaceDialog();
            ReplaceDlg.StartPosition = FormStartPosition.CenterParent;
            ReplaceDlg.richTextBox1 = this;
            ReplaceDlg.textBox1.Text = this.SelectedText;
            ReplaceDlg.ShowDialog();
        }

        /// <summary>
        /// 字体对话框
        /// </summary>
        public void ShowFontDlg()
        {
            FontDialog fontDialog1 = new FontDialog();
            fontDialog1.Font = richTextBox1.Font;
            if (fontDialog1.ShowDialog() == DialogResult.OK)
            {
                richTextBox1.Font = fontDialog1.Font;

            }
        }
        /// <summary>
        /// 转到 对话框
        /// </summary>
        public void ShowGoToDlg()
        {
            Point pt = this.GetCaretPosition();

            frm_GOTO frm = new frm_GOTO();
            frm.label1.Text = "等号(1 - " + this.Lines.Length.ToString() + ")(&L)";         
            frm.textBox1.Text = pt.X.ToString();
            if (frm.ShowDialog() == DialogResult.OK)
            {
                int Line = Convert.ToInt32(frm.textBox1.Text);
                if (Line >= 1)
                {
                    if (Line > this.Lines.Length+1)
                    {
                        MessageBox.Show("行数大于现有的行数");
                    }
                    else
                    {
                        this.jumpLine(Line);
                    }
                }
            }
        }

        //RichTextBox 插入图片
        public void ShowInsertImageDlg()
        {
            OpenFileDialog OpenFileDialog1 = new OpenFileDialog();
            OpenFileDialog1.Title = "Select Image";
            OpenFileDialog1.Filter = "BMP File|*.BMP|JPEG File|*.JPG|GIF File|*.GIF|PNG File|*.PNG|ICO File|*.ICO|Image File|*.BMP;*.DIB;*.RLE;*.JPG;*.JPEG;*.JPE;*.JFIF;*.GIF;*.EMF;*.WMF;*.TIF;*.PNG;*.ICO|All File|*.*";
            OpenFileDialog1.FilterIndex = 6;
            if (OpenFileDialog1.ShowDialog() == DialogResult.OK)
            {
                string strImagePath = OpenFileDialog1.FileName;
                Image img;
                img = Image.FromFile(strImagePath);
                Clipboard.SetDataObject(img);
                DataFormats.Format df;
                df = DataFormats.GetFormat(DataFormats.Bitmap);
                if (this.CanPaste(df))
                {
                    this.Paste(df);
                }
            }
        }     

        //插入表格对话框
        public void ShowInsertTableDlg()
        {
            richTextBoxTableDlg dlg = new richTextBoxTableDlg();
            dlg.richTextBox = this;

            if (dlg.ShowDialog() == DialogResult.OK)
            {
                richTextBoxTable r1 = new richTextBoxTable();
                r1.richTextBox = this;
                r1.cellWidth = (int)dlg.numericUpDownCellWidth.Value;
                r1.InsertTable((int)dlg.numericUpDownColumn.Value, (int)dlg.numericUpDownRow.Value, dlg.radioButtonAutoSzie.Checked);
            }
        }


        public void ShowViewSourceDlg()
        {
            ViewRtfSoruceDlg rtfdlg = new ViewRtfSoruceDlg();

            string s = string.Format("文件很大 请等待... {0}KB", (richTextBox1.Rtf.Length /1204));
         
            //if (richTextBox1.Rtf.Length > 1024*1024)
            //    MessageBox.Show(s);

            rtfdlg.textBox1.Text = richTextBox1.Rtf;
            if (rtfdlg.ShowDialog()==DialogResult.OK)
            {
                richTextBox1.Rtf = rtfdlg.textBox1.Text;
            }
            Application.DoEvents();
        }
        #endregion

        #region RichTextBox 是否显示行号
        #endregion

        #region 实现 页面设置  打印预览 打印

        //页面设置
        public void ShowPageSetupDlg()
        {
            richTextBoxPrintClass r = new richTextBoxPrintClass();
            r.richTextBox = this;
            r.ShowPageSetupDlg();
        }
        //打印预览功能
        public void ShowShowPagePriviewDlg()
        {
            richTextBoxPrintClass r = new richTextBoxPrintClass();
            r.richTextBox = this;
            r.ShowShowPagePriviewDlg();
        }

        //打印
        public void ShowPrintDlg()
        {
            richTextBoxPrintClass r = new richTextBoxPrintClass();
            r.richTextBox = this;
            r.ShowPrintDlg();
        }
#endregion

        #region 支持表格正确粘贴

        
        // P/Invoke declarations
        [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
        private static extern IntPtr LoadLibrary(string path);

        private static IntPtr moduleHandle;

        protected override CreateParams CreateParams
        {
            get
            {
                if (moduleHandle == IntPtr.Zero)
                {
                    moduleHandle = LoadLibrary("msftedit.dll");
                    if ((long)moduleHandle < 0x20)
                    {
                        throw new Win32Exception(Marshal.GetLastWin32Error(), "Could not load Msftedit.dll");
                    }
                }

                CreateParams createParams = base.CreateParams;
                createParams.ClassName = "RichEdit50W";
                if (this.Multiline)
                {
                    if (((this.ScrollBars & RichTextBoxScrollBars.Horizontal) != RichTextBoxScrollBars.None) && !base.WordWrap)
                    {
                        createParams.Style |= 0x100000;
                        if ((this.ScrollBars & ((RichTextBoxScrollBars)0x10)) != RichTextBoxScrollBars.None)
                        {
                            createParams.Style |= 0x2000;
                        }
                    }
                    if ((this.ScrollBars & RichTextBoxScrollBars.Vertical) != RichTextBoxScrollBars.None)
                    {
                        createParams.Style |= 0x200000;
                        if ((this.ScrollBars & ((RichTextBoxScrollBars)0x10)) != RichTextBoxScrollBars.None)
                        {
                            createParams.Style |= 0x2000;
                        }
                    }
                }
                if ((BorderStyle.FixedSingle == base.BorderStyle) && ((createParams.Style & 0x800000) != 0))
                {
                    createParams.Style &= -8388609;
                    createParams.ExStyle |= 0x200;
                }
                return createParams;
            }
        }
        #endregion
    }

}

//

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;


//2013-11-27 02:00:13
////清除样式
//richTextBoxBulletClass r = new richTextBoxBulletClass();
//r.richTextBox = richTextBox1;
//r.RemoveSelectionParaFormat2();


////属性获得

//richTextBoxBulletClass r = new richTextBoxBulletClass();
//r.richTextBox = richTextBox1;
//btn.Checked = r.SelectionOrderList;


////设置样式
//richTextBoxBulletClass r = new richTextBoxBulletClass();
//r.richTextBox = richTextBox1;
//r.SelectionOrderList = !r.SelectionOrderList;

namespace RichTextBoxCtrl
{
    class richTextBoxBulletClass
    {
        public RichTextBox richTextBox;
        public richTextBoxBulletClass()
        {
            richTextBox = new RichTextBox();
        }

        #region PARAFORMAT2
        [StructLayout(LayoutKind.Sequential)]
        private class PARAFORMAT2
        {
            public int cbSize;
            public int dwMask;
            public short wNumbering;
            public short wReserved;
            public int dxStartIndent;
            public int dxRightIndent;
            public int dxOffset;
            public short wAlignment;
            public short cTabCount;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x20)]
            public int[] rgxTabs;

            public int dySpaceBefore;     // Vertical spacing before para
            public int dySpaceAfter;     // Vertical spacing after para
            public int dyLineSpacing;     // Line spacing depending on Rule
            public short sStyle;         // Style handle
            public byte bLineSpacingRule;     // Rule for line spacing (see tom.doc)
            public byte bOutlineLevel;     // Outline Level
            public short wShadingWeight;     // Shading in hundredths of a per cent
            public short wShadingStyle;     // Byte 0: style, nib 2: cfpat, 3: cbpat
            public short wNumberingStart;     // Starting value for numbering
            public short wNumberingStyle;     // Alignment, Roman/Arabic, (), ), ., etc.
            public short wNumberingTab;     // Space bet 1st indent and 1st-line text
            public short wBorderSpace;     // Border-text spaces (nbl/bdr in pts)
            public short wBorderWidth;     // Pen widths (nbl/bdr in half twips)
            public short wBorders;         // Border styles (nibble/border)

            public PARAFORMAT2()
            {
                this.cbSize = Marshal.SizeOf(typeof(PARAFORMAT2));
            }
        }
        #endregion

        #region PARAFORMAT MASK VALUES



        public const uint WM_USER = 0x0400;
        // RichEdit messages 
        public const uint EM_GETPARAFORMAT = (WM_USER + 61);
        public const uint EM_SETPARAFORMAT = (WM_USER + 71);

        // PARAFORMAT mask values
        public const uint PFM_OFFSET = 0x00000004;
        public const uint PFM_NUMBERING = 0x00000020;

        // PARAFORMAT 2.0 masks and effects
        public const uint PFM_NUMBERINGSTYLE = 0x00002000;//设置项目编号的样式
        public const uint PFM_NUMBERINGTAB = 0x00004000;//设置项目编号按下Tab键的信息
        public const uint PFM_NUMBERINGSTART = 0x00008000;//设置项目编号的开始标识



        //wNumbering
        //Options used for bulleted or numbered paragraphs. 
        //To use this member, set the PFM_NUMBERING flag in the dwMask member. 
        //This member can be one of the following values.
        public enum Paraformat2Numbering
        {
            zero = 0,
            Normal = 1,             //No paragraph numbering or bullets.
            ArabicNumbers = 2,      //Uses Arabic numbers (1, 2, 3, ...). 
            LowerCaseLetter = 3,    //Uses lowercase letters (a, b, c, ...). 
            UpperCaseLetter = 4,    //Uses uppercase letters (A, B, C, ...). 
            LowerCaseRoman = 5,     //Uses lowercase Roman numerals (i, ii, iii, ...). 
            UpperCaseRoman = 6      //Uses uppercase Roman numerals (I, II, III, ...). 
        }

        //wNumberingStyle
        //Numbering style used with numbered paragraphs. 
        //Use this member in conjunction with the wNumbering member. 
        //This member is included only for compatibility with TOM interfaces;
        //the rich edit control stores the value but rich edit versions earlier than 3.0 do not use it to display the text or bullets.
        //To use this member, set the PFM_NUMBERINGSTYLE flag in the dwMask member. 
        //This member can be one of the following values. 
        public enum Paraformat2NumberingStyle
        {
            RightParenthesis = 0x000,//Follows the number with a right parenthesis.
            DoubleParenthesis = 0x100,//Encloses the number in parentheses.
            Period = 0x200,//Follows the number with a period.
            Plain = 0x300,//Displays only the number.
            zero = 0x400//Continues a numbered list without applying the next number or bullet. 
        }

        #endregion

        #region SetSelectionParaFormat2

        [DllImport("user32.dll")]
        private static extern IntPtr SendMessage(IntPtr hWnd, uint msg, uint wParam, [In, Out, MarshalAs(UnmanagedType.LPStruct)] PARAFORMAT2 lParam);

        public void SetSelectionParaFormat2(Paraformat2NumberingStyle style, Paraformat2Numbering Number)
        {
            PARAFORMAT2 p = new PARAFORMAT2();
            p.dwMask = (int)(PFM_NUMBERING | PFM_OFFSET | PFM_NUMBERINGSTART | PFM_NUMBERINGSTYLE | PFM_NUMBERINGTAB);

            p.wNumbering = (short)Number;
            //p.dxOffset = BulletIndent;
            p.wNumberingStyle = (short)style;
            p.wNumberingStart = 1;
            p.wNumberingTab = 500;

            SendMessage(richTextBox.Handle, EM_SETPARAFORMAT, 0, p);
        }
        #endregion


        //获得 wNumbering的返回值
        public Paraformat2Numbering GetSelectionParaformat2wNumbering()
        {
            PARAFORMAT2 p = new PARAFORMAT2();
            SendMessage(richTextBox.Handle, EM_GETPARAFORMAT, 0, p);
            return (Paraformat2Numbering)p.wNumbering;
        }

        //获得wNumberingStyleg的返回值
        public Paraformat2NumberingStyle GetSelectionParaformat2wNumberingStyle()
        {
            PARAFORMAT2 p = new PARAFORMAT2();
            SendMessage(richTextBox.Handle, EM_GETPARAFORMAT, 0, p);
            return (Paraformat2NumberingStyle)p.wNumberingStyle;
        }

        #region 更多样式... ...

        private void test()
        {
            //●●●●
            SetSelectionParaFormat2(Paraformat2NumberingStyle.Period, Paraformat2Numbering.Normal);
            //1 2 3 4 5 ...
            SetSelectionParaFormat2(Paraformat2NumberingStyle.Plain, Paraformat2Numbering.ArabicNumbers);
            //1. 2. 3. 4. 5.  ...
            SetSelectionParaFormat2(Paraformat2NumberingStyle.Period, Paraformat2Numbering.ArabicNumbers);
            //1) 2) 3) 4) ...
            SetSelectionParaFormat2(Paraformat2NumberingStyle.RightParenthesis, Paraformat2Numbering.ArabicNumbers);
            //(1) (2) (3) (4) ...
            SetSelectionParaFormat2(Paraformat2NumberingStyle.DoubleParenthesis, Paraformat2Numbering.ArabicNumbers);
            //////////////////////////////////////////////////////////////////////////

            //a b c d e 
            SetSelectionParaFormat2(Paraformat2NumberingStyle.Plain, Paraformat2Numbering.LowerCaseLetter);
            //a. b. c. d. e.
            SetSelectionParaFormat2(Paraformat2NumberingStyle.Period, Paraformat2Numbering.LowerCaseLetter);
            //a) b) c) d) e)
            SetSelectionParaFormat2(Paraformat2NumberingStyle.RightParenthesis, Paraformat2Numbering.LowerCaseLetter);
            //(a) (b) (c) (d) (e)
            SetSelectionParaFormat2(Paraformat2NumberingStyle.DoubleParenthesis, Paraformat2Numbering.LowerCaseLetter);
            //////////////////////////////////////////////////////////////////////////

            //A B C D E 
            SetSelectionParaFormat2(Paraformat2NumberingStyle.Plain, Paraformat2Numbering.UpperCaseLetter);
            //A. B. C. D. E.
            SetSelectionParaFormat2(Paraformat2NumberingStyle.Period, Paraformat2Numbering.UpperCaseLetter);
            //A) B) C) D) E)
            SetSelectionParaFormat2(Paraformat2NumberingStyle.RightParenthesis, Paraformat2Numbering.UpperCaseLetter);
            //(A) (B) (C) (D) (E)
            SetSelectionParaFormat2(Paraformat2NumberingStyle.DoubleParenthesis, Paraformat2Numbering.UpperCaseLetter);
            //////////////////////////////////////////////////////////////////////////

            //I II III IIII IV 
            SetSelectionParaFormat2(Paraformat2NumberingStyle.Plain, Paraformat2Numbering.LowerCaseRoman);
            //I. II. III. IIII. IV. 
            SetSelectionParaFormat2(Paraformat2NumberingStyle.Period, Paraformat2Numbering.LowerCaseRoman);
            //I) II) III) IIII) IV) 
            SetSelectionParaFormat2(Paraformat2NumberingStyle.RightParenthesis, Paraformat2Numbering.LowerCaseRoman);
            //(I) (II) (III) (IIII) (IV) 
            SetSelectionParaFormat2(Paraformat2NumberingStyle.DoubleParenthesis, Paraformat2Numbering.LowerCaseRoman);
            //////////////////////////////////////////////////////////////////////////

        }
        #endregion



        //清除选中的样式
        public void RemoveSelectionParaFormat2()
        {
            SetSelectionParaFormat2(0, 0);
        }



        #region  数字序列 1. 2. 3. 4. 5.  ...
        private bool bOrder = false;
        public bool SelectionOrderList
        {
            get
            {
                return (
                       (GetSelectionParaformat2wNumbering() == Paraformat2Numbering.ArabicNumbers) &&
                       (GetSelectionParaformat2wNumberingStyle() == Paraformat2NumberingStyle.Period)
                       );

            }
            set
            {
                bOrder = value;

                if (value == true)
                    SetSelectionParaFormat2(Paraformat2NumberingStyle.Period, Paraformat2Numbering.ArabicNumbers);
                else
                    RemoveSelectionParaFormat2();
            }
        }
        #endregion

    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing;


//使用
////set font Size font Style bold Italic
////
////普通  not bold italic 
////标题1  字体大小　24 Bold
////标题2  字体大小　18 Bold
////标题3  字体大小　14 Bold
////标题4  字体大小　12 Bold
////标题5  字体大小　10 Bold
////标题6  字体大小　8  Bold
////地址   字体大小　12 Italic

//private RichTextBoxCtrl.richTextBoxFontFormatClass r = new RichTextBoxCtrl.richTextBoxFontFormatClass();
//private void Form1_Load(object sender, EventArgs e)
//{
//    r.richTextBox = richTextBox1;
//    comboBox1.Items.Clear();
//    comboBox1.Items.AddRange(new object[] {
//             "普通",
//             "标题1",
//             "标题2",
//             "标题3",
//             "标题4",
//             "标题5",
//             "标题6",
//             "地址 "});
//}

//private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
//{
//    r.SetFontFormat(comboBox1.SelectedIndex);

//    //SetFontFormat(comboBox1.SelectedIndex);
//    Text = r.GetFontFormat().ToString();
//}

//private void richTextBox1_SelectionChanged(object sender, EventArgs e)
//{
//    Text = r.GetFontFormat();
//    comboBox1.Text = r.GetFontFormat();
//}

namespace RichTextBoxCtrl
{
    class richTextBoxFontFormatClass
    {
        public richTextBoxFontFormatClass()
        {

        }
        public RichTextBox richTextBox;
      
        public void SetFontFormat(int formatIndex)
        {
            float fontSize = richTextBox.Font.Size;
            string fontName = richTextBox.Font.Name;
            switch (formatIndex)
            {
                case 0://普通
                    richTextBox.SelectionFont = new Font(fontName, fontSize, FontStyle.Regular);
                    break;
                case 1://标题1 
                    richTextBox.SelectionFont = new Font(fontName, 24f, FontStyle.Bold);
                    break;
                case 2: //标题2
                    richTextBox.SelectionFont = new Font(fontName, 18f, FontStyle.Bold);
                    break;
                case 3: //标题3
                    richTextBox.SelectionFont = new Font(fontName, 14f, FontStyle.Bold);
                    break;
                case 4://标题4
                    richTextBox.SelectionFont = new Font(fontName, 12f, FontStyle.Bold);
                    break;
                case 5: //标题5
                    richTextBox.SelectionFont = new Font(fontName, 10f, FontStyle.Bold);
                    break;
                case 6: //标题6
                    richTextBox.SelectionFont = new Font(fontName, 8f, FontStyle.Bold);
                    break;
                case 7: //地址
                    richTextBox.SelectionFont = new Font(fontName, 12f, FontStyle.Italic);
                    break;
            }
        }
        public string GetFontFormat()
        {
            string Result = "普通";
            if (richTextBox.SelectionFont !=null )
            {           
                float fontSize = richTextBox.SelectionFont.Size;
                FontStyle fontStyle = richTextBox.SelectionFont.Style;

                if (fontSize == 24 && fontStyle == FontStyle.Bold)
                    Result = "标题1";
                else
                if (fontSize == 18 && fontStyle == FontStyle.Bold)
                    Result = "标题2";
                else
                if (fontSize == 14 && fontStyle == FontStyle.Bold)
                    Result = "标题3";
                else
                if (fontSize == 12 && fontStyle == FontStyle.Bold)
                    Result = "标题4";
                else
                if (fontSize == 10 && fontStyle == FontStyle.Bold)
                    Result = "标题5";
                else
                if (fontSize == 8 && fontStyle == FontStyle.Bold)
                    Result = "标题6";
                else
                if (fontSize == 12 && fontStyle == FontStyle.Italic)
                    Result = "地址";
                else
                    Result = "普通";
            }
            else
                Result = "普通";
            return Result;
        }
    }
}

using System;
using System.Windows.Forms;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Drawing.Printing;


#region 调用示例
/*使用
//页面设置
private void btnPageSetup_Click(object sender, EventArgs e)
{
    richTextBoxPrintClass r = new richTextBoxPrintClass();
    r.richTextBox = richTextBox1;
    r.ShowPageSetupDlg();
}
//打印预览功能
private void btnPrintPreview_Click(object sender, EventArgs e)
{
    richTextBoxPrintClass r = new richTextBoxPrintClass();
    r.richTextBox = richTextBox1;
    r.ShowShowPagePriviewDlg();
}
//打印
private void btnPrint_Click(object sender, EventArgs e)
{
    richTextBoxPrintClass r = new richTextBoxPrintClass();
    r.richTextBox = richTextBox1;
    r.ShowPrintDlg();
}
*/
#endregion
//http://support.microsoft.com/kb/812425/zh-cn
namespace RichTextBoxCtrl
{
    class richTextBoxPrintClass
    {
        public richTextBoxPrintClass()
        {
            InitializeComponent();
        }
        #region 打印功用

        //and the unit used by Win32 API calls (twips 1/1440 inch)
        private const double anInch = 14.4;

        [StructLayout(LayoutKind.Sequential)]
        private struct RECT
        {
            public int Left;
            public int Top;
            public int Right;
            public int Bottom;
        }

        [StructLayout(LayoutKind.Sequential)]
        private struct CHARRANGE
        {
            public int cpMin;         //First character of range (0 for start of doc)
            public int cpMax;           //Last character of range (-1 for end of doc)
        }

        [StructLayout(LayoutKind.Sequential)]
        private struct FORMATRANGE
        {
            public IntPtr hdc;             //Actual DC to draw on
            public IntPtr hdcTarget;       //Target DC for determining text formatting
            public RECT rc;                //Region of the DC to draw to (in twips)
            public RECT rcPage;            //Region of the whole DC (page size) (in twips)
            public CHARRANGE chrg;         //Range of text to draw (see earlier declaration)
        }

        private const int WM_USER = 0x0400;
        private const int EM_FORMATRANGE = WM_USER + 57;

        [DllImport("USER32.dll")]
        private static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wp, IntPtr lp);


        // Render the contents of the RichTextBox for printing
        //    Return the last character printed + 1 (printing start from this point for next page)
        public static int Print(RichTextBox richTextBox, int charFrom, int charTo, PrintPageEventArgs e)
        {
            //Calculate the area to render and print
            RECT rectToPrint;
            rectToPrint.Top = (int)(e.MarginBounds.Top * anInch);
            rectToPrint.Bottom = (int)(e.MarginBounds.Bottom * anInch);
            rectToPrint.Left = (int)(e.MarginBounds.Left * anInch);
            rectToPrint.Right = (int)(e.MarginBounds.Right * anInch);

            //Calculate the size of the page
            RECT rectPage;
            rectPage.Top = (int)(e.PageBounds.Top * anInch);
            rectPage.Bottom = (int)(e.PageBounds.Bottom * anInch);
            rectPage.Left = (int)(e.PageBounds.Left * anInch);
            rectPage.Right = (int)(e.PageBounds.Right * anInch);

            IntPtr hdc = e.Graphics.GetHdc();

            FORMATRANGE fmtRange;
            fmtRange.chrg.cpMax = charTo;                //Indicate character from to character to 
            fmtRange.chrg.cpMin = charFrom;
            fmtRange.hdc = hdc;                    //Use the same DC for measuring and rendering
            fmtRange.hdcTarget = hdc;              //Point at printer hDC
            fmtRange.rc = rectToPrint;             //Indicate the area on page to print
            fmtRange.rcPage = rectPage;            //Indicate size of page

            IntPtr res = IntPtr.Zero;

            IntPtr wparam = IntPtr.Zero;
            wparam = new IntPtr(1);

            //Get the pointer to the FORMATRANGE structure in memory
            IntPtr lparam = IntPtr.Zero;
            lparam = Marshal.AllocCoTaskMem(Marshal.SizeOf(fmtRange));
            Marshal.StructureToPtr(fmtRange, lparam, false);

            //Send the rendered data for printing 
            res = SendMessage(richTextBox.Handle, EM_FORMATRANGE, wparam, lparam);

            //Free the block of memory allocated
            Marshal.FreeCoTaskMem(lparam);

            //Release the device context handle obtained by a previous call
            e.Graphics.ReleaseHdc(hdc);

            //Return last + 1 character printer
            return res.ToInt32();
        }

        #endregion


        #region 初始化
        public RichTextBox richTextBox;
        private PageSetupDialog pageSetupDialog1;
        private PrintDialog printDialog1;
        private PrintDocument printDocument1;
        private PrintPreviewDialog printPreviewDialog1;

        private void InitializeComponent()
        {
            richTextBox = new RichTextBox();
            pageSetupDialog1 = new PageSetupDialog();
            printDialog1 = new PrintDialog();
            printDocument1 = new PrintDocument();
            printPreviewDialog1 = new PrintPreviewDialog();

            // 
            // pageSetupDialog1
            // 
            pageSetupDialog1.Document = printDocument1;
            // 
            // printDialog1
            // 
            printDialog1.Document = printDocument1;
            printDialog1.UseEXDialog = true;
            // 
            // printDocument1
            // 
            printDocument1.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(printDocument1_PrintPage);
            printDocument1.BeginPrint += new System.Drawing.Printing.PrintEventHandler(printDocument1_BeginPrint);
            // 
            // printPreviewDialog1
            // 

            printPreviewDialog1.AutoScrollMargin = new System.Drawing.Size(0, 0);
            printPreviewDialog1.AutoScrollMinSize = new System.Drawing.Size(0, 0);
            printPreviewDialog1.ClientSize = new System.Drawing.Size(400, 300);
            printPreviewDialog1.Document = printDocument1;
            printPreviewDialog1.Enabled = true;
            // printPreviewDialog1.Icon = ((System.Drawing.Icon)(resources.GetObject("printPreviewDialog1.Icon")));
            printPreviewDialog1.Name = "printPreviewDialog1";
            printPreviewDialog1.Visible = false;
        }


        private int checkPrint;
        private void printDocument1_BeginPrint(object sender, System.Drawing.Printing.PrintEventArgs e)
        {
            checkPrint = 0;
        }

        private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            // Print the content of RichTextBox. Store the last character printed.
            //checkPrint = richTextBoxPrintCtrl1.Print(checkPrint, richTextBoxPrintCtrl1.TextLength, e);
            checkPrint = richTextBoxPrintClass.Print(richTextBox, checkPrint, richTextBox.TextLength, e);

            // Check for more pages
            if (checkPrint < richTextBox.TextLength)
                e.HasMorePages = true;
            else
                e.HasMorePages = false;
        }


        #endregion


        //页面设置功能
        public void ShowPageSetupDlg()
        {
            pageSetupDialog1.ShowDialog();
        }

        //打印预览功能
        public void ShowShowPagePriviewDlg()
        {
            printPreviewDialog1.ShowDialog();
        }

        //打印
        public void ShowPrintDlg()
        {
            if (printDialog1.ShowDialog() == DialogResult.OK)
                printDocument1.Print();
        }
    }
}

using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using System.Text;

//private void button2_Click(object sender, EventArgs e)
//{
//    richTextBoxTableDlg dlg = new richTextBoxTableDlg();
//    dlg.richTextBox = richTextBox51;

//    if (dlg.ShowDialog() ==DialogResult.OK)
//    {
//        richTextBoxTable r1 = new richTextBoxTable();
//        r1.richTextBox = richTextBox51;
//        r1.cellWidth = (int)dlg.numericUpDownCellWidth.Value  ;
//        r1.InsertTable((int)dlg.numericUpDownColumn.Value, (int)dlg.numericUpDownRow.Value, dlg.radioButtonAutoSzie.Checked);  
//    }
//}
/*
 * 光标在表格上可以改变光标
 */

namespace richTextBoxTableClass
{
    public class richTextBoxTable 
    {
      
        public richTextBoxTable()
        {

        }

       public RichTextBox richTextBox;
       public int cellWidth;// = 1000;//default =1000

        /// <summary>
        /// 插入表格
        /// </summary>
        /// <param name="col">行</param>
        /// <param name="row">列</param>
        /// <param name="AutoSize">=TRUE:自动设置每个单元格的大小</param>
        public void InsertTable(int col, int row,bool AutoSize)
        {
            StringBuilder rtf = new StringBuilder();
            rtf.Append(@"{
tf1 ");

            //int cellWidth = 1000;//col.1 width =1000
            if (AutoSize)
                //滚动条出现时 (richTextBox.ClientSize.Width - 滚动条的宽 /列的个数)*15
                cellWidth = ((richTextBox.ClientSize.Width-3) / row) * 15; 
            for (int i = 0; i < col; i++)
            {
                rtf.Append(@"	rowd");
                for (int j = 1; j <= row; j++)
                    rtf.Append(@"cellx" + (j * cellWidth).ToString());
                rtf.Append(@"intbl cell 
ow"); //create row
            }
            rtf.Append(@"pard");
            rtf.Append(@"}");
            richTextBox.SelectedRtf = rtf.ToString();
            //return rtf.ToString();
        }
    }
}