public static void FileMsgAdd(string fileMsg, string path, RichTextBox box)
{
var filemsg = TextToRtf(fileMsg);
var path1 = TextToRtf(path);
string insertRtf = @"{\rtf1" + TextToRtf(fileMsg) + @"\v #" + TextToRtf(path) + @"\v0}";
int iniPos = box.SelectionStart;
box.SelectedRtf = insertRtf;
box.SelectionStart = iniPos;
box.SelectionLength = insertRtf.Length;// filemsg.Length + path1.Length;//fileMsg.Length + path.Length;//filemsg.Length + path1.Length;//
CHARFORMAT2A vCharFormat2a = new CHARFORMAT2A();
vCharFormat2a.cbSize = Marshal.SizeOf(typeof(CHARFORMAT2A));
vCharFormat2a.dwMask = CFM_LINK;
vCharFormat2a.dwEffects = CFE_LINK;
SendMessage(box.Handle, EM_SETCHARFORMAT, SCF_SELECTION,
vCharFormat2a);
}
public static extern IntPtr SendMessage(IntPtr hWnd, int msg, int wParam,
[In, Out, MarshalAs(UnmanagedType.LPStruct)] CHARFORMAT2A lParam);