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 WindowsForms

{

    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 + );

        public const uint EM_SETPARAFORMAT = (WM_USER + );

        // 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 = ,

            Normal = ,             //No paragraph numbering or bullets.

            ArabicNumbers = ,      //Uses Arabic numbers (1, 2, 3, ...).

            LowerCaseLetter = ,    //Uses lowercase letters (a, b, c, ...).

            UpperCaseLetter = ,    //Uses uppercase letters (A, B, C, ...).

            LowerCaseRoman = ,     //Uses lowercase Roman numerals (i, ii, iii, ...).

            UpperCaseRoman =       //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 = ;

            p.wNumberingTab = ;

            SendMessage(richTextBox.Handle, EM_SETPARAFORMAT, , p);

        }

        #endregion

        //获得 wNumbering的返回值

        public Paraformat2Numbering GetSelectionParaformat2wNumbering()

        {

            PARAFORMAT2 p = new PARAFORMAT2();

            SendMessage(richTextBox.Handle, EM_GETPARAFORMAT, , p);

            return (Paraformat2Numbering)p.wNumbering;

        }

        //获得wNumberingStyleg的返回值

        public Paraformat2NumberingStyle GetSelectionParaformat2wNumberingStyle()

        {

            PARAFORMAT2 p = new PARAFORMAT2();

            SendMessage(richTextBox.Handle, EM_GETPARAFORMAT, , 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(, );

        }

        #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

    }

}