RichTextBox中插入自定义链接

//richTextBox1.DetectUrls = false; // 自动识别连接关闭

using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, Pack = 4)]

public class CHARFORMAT2A

{

public int cbSize;

public int dwMask;

public int dwEffects;

public int yHeight;

public int yOffset;

public int crTextColor;

public byte bCharSet;

public byte bPitchAndFamily;

[MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x20)]

public byte[] szFaceName = new byte[0x20];

public short wWeight;

public short sSpacing;

public int crBackColor;

public int lcid;

public int dwReserved;

public short sStyle;

public short wKerning;

public byte bUnderlineType;

public byte bAnimation;

public byte bRevAuthor;

}

[DllImport("user32.dll", CharSet = CharSet.Auto)]

public static extern IntPtr SendMessage(IntPtr hWnd, int msg, int wParam,

[In, Out, MarshalAs(UnmanagedType.LPStruct)] CHARFORMAT2A lParam);

public const int CFE_LINK= 0x20;

public const int CFM_LINK = 0x20;

public const int EM_SETCHARFORMAT = 0x444;

public const int SCF_SELECTION = 1;

public string TextToRtf(string AText)

{

string vReturn = "";

foreach(char vChar in AText)

{

switch(vChar)

{

case '//':

vReturn += @"//";

break;

case '{':

vReturn += @"/{";

break;

case '}':

vReturn += @"/}";

break;

default:

if (vChar > (char)127)

vReturn += @"/u" + ((int)vChar).ToString() + "?";

else vReturn += vChar;

break;

}

}

return vReturn;

}

private void button1_Click(object sender, EventArgs e)

{

string insertText = @"床上等你";

string insertLink = @"#http://www.youkuaiyun.com";

string insertRtf = @"{/rtf1 " +

TextToRtf(insertText) + @"/v " + TextToRtf(insertLink) + @"/v0}";

int start = richTextBox1.SelectionStart;

richTextBox1.SelectedRtf = insertRtf;

richTextBox1.SelectionStart = start;

richTextBox1.SelectionLength = insertText.Length + insertLink.Length;

CHARFORMAT2A vCharFormat2a = new CHARFORMAT2A();

vCharFormat2a.cbSize = Marshal.SizeOf(typeof(CHARFORMAT2A));

vCharFormat2a.dwMask = CFM_LINK;

vCharFormat2a.dwEffects = CFE_LINK;

SendMessage(richTextBox1.Handle, EM_SETCHARFORMAT, SCF_SELECTION,

vCharFormat2a);

}

private void richTextBox1_LinkClicked(object sender, LinkClickedEventArgs e)

{

MessageBox.Show(e.LinkText.Substring(e.LinkText.IndexOf('#')));

}