private void toolStripButton4_Click(object sender, EventArgs e)
        {
            if (openFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                IF_MDLLib.IFRegExp REG = new IFRegExp();


                //{
                //    System.IO.StreamReader sr = new System.IO.StreamReader(openFileDialog1.FileName, Encoding.UTF8);
                //    richTextBox1.Text = REG.rtf_text(sr.ReadToEnd(), 2);
                //}

                {
                    System.IO.FileStream stream = System.IO.File.OpenRead(openFileDialog1.FileName);
                    byte[] buff = new byte[stream.Length];
                    stream.Read(buff, 0, (int)stream.Length);

                    IntPtr pBSTR = SysAllocStringByteLen(null, (UInt32)(buff.Length));
                    Marshal.Copy(buff, 0, pBSTR, buff.Length);

                    richTextBox1.Text = REG.rtf_text(Marshal.PtrToStringBSTR(pBSTR), 1);

                    Marshal.FreeBSTR(pBSTR);
                    pBSTR = IntPtr.Zero;
                }

                System.Windows.Forms.MessageBox.Show("OK");
            }
        }
        private void toolStripButton6_Click(object sender, EventArgs e)
        {
            string str = @"{\rtf1\ansi\ansicpg932\deff0\nouicompat\deflang1033\deflangfe1041{\fonttbl{\f0\fnil\fcharset128 \'82\'6c\'82\'72 \'96\'be\'92\'a9;}}
{\*\generator Riched20 6.3.9600}\viewkind4\uc1 
\pard\sa200\sl276\slmult1\f0\fs22\lang17 dfadf\'82\'6c\'82\'72 \'96\'be\'92\'a9v\par
}
 ";

            IF_MDLLib.IFRegExp REG = new IFRegExp();
            richTextBox1.Text = REG.rtf_text(str, 2);
        }