using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace RichTextBoxLinks
{
public class RichTextBoxEx : RichTextBox
{
#region Interop-Defines
[ StructLayout( LayoutKind.Sequential )]
private struct CHARFORMAT2_STRUCT
{
public UInt32 cbSize;
public UInt32 dwMask;
public UInt32 dwEffects;
public Int32 yHeight;
public Int32 yOffset;
public Int32 crTextColor;
public byte bCharSet;
public byte bPitchAndFamily;
[MarshalAs(UnmanagedType.ByValArray, SizeConst=32)]
public char[] szFaceName;
public UInt16 wWeight;
public UInt16 sSpacing;
public int crBackColor; // Color.ToArgb() -> int
public int lcid;
public int dwReserved;
public Int16 sStyle;
public Int16 wKerning;
public byte bUnderlineType;
public byte bAnimation;
public byte bRevAuthor;
public byte bReserved1;
}
[DllImport("user32.dll", CharSet=CharSet.Auto)]
private static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);
private const int WM_USER = 0x0400;
private const int EM_GETCHARFORMAT = WM_USER+58;
private const int EM_SETCHARFORMAT = WM_USER+68;
private const int SCF_SELECTION = 0x0001;
private const int SCF_WORD = 0x0002;
private const int SCF_ALL = 0x0004;
#region CHARFORMAT2 Flags
private const UInt32 CFE_BOLD = 0x0001;
private const UInt32 CFE_ITALIC = 0x0002;
private const UInt32 CFE_UNDERLINE = 0x0004;
private const UInt32 CFE_STRIKEOUT = 0x0008;
private const UInt32 CFE_PROTECTED = 0x0010;
private const UInt32 CFE_LINK = 0x0020;
private const UInt32 CFE_AUTOCOLOR = 0x40000000;
private const UInt32 CFE_SUBSCRIPT = 0x00010000; /* Superscript and subscript are */
private const UInt32 CFE_SUPERSCRIPT= 0x00020000; /* mutually exclusive */
private const int CFM_SMALLCAPS = 0x0040; /* (*) */
private const int CFM_ALLCAPS = 0x0080; /* Displayed by 3.0 */
private const int CFM_HIDDEN = 0x0100; /* Hidden by 3.0 */
private const int CFM_OUTLINE = 0x0200; /* (*) */
private const int CFM_SHADOW = 0x0400; /* (*) */
private const int CFM_EMBOSS = 0x0800; /* (*) */
private const int CFM_IMPRINT = 0x1000; /* (*) */
private const int CFM_DISABLED = 0x2000;
private const int CFM_REVISED = 0x4000;
private const int CFM_BACKCOLOR = 0x04000000;
private const int CFM_LCID = 0x02000000;
private const int CFM_UNDERLINETYPE = 0x00800000; /* Many displayed by 3.0 */
private const int CFM_WEIGHT = 0x00400000;
private const int CFM_SPACING = 0x00200000; /* Displayed by 3.0 */
private const int CFM_KERNING = 0x00100000; /* (*) */
private const int CFM_STYLE = 0x00080000; /* (*) */
private const int CFM_ANIMATION = 0x00040000; /* (*) */
private const int CFM_REVAUTHOR = 0x00008000;
private const UInt32 CFM_BOLD = 0x00000001;
private const UInt32 CFM_ITALIC = 0x00000002;
private const UInt32 CFM_UNDERLINE = 0x00000004;
private const UInt32 CFM_STRIKEOUT = 0x00000008;
private const UInt32 CFM_PROTECTED = 0x00000010;
private const UInt32 CFM_LINK = 0x00000020;
private const UInt32 CFM_SIZE = 0x80000000;
private const UInt32 CFM_COLOR = 0x40000000;
private const UInt32 CFM_FACE = 0x20000000;
private const UInt32 CFM_OFFSET = 0x10000000;
private const UInt32 CFM_CHARSET = 0x08000000;
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