private void SendMessageBox_TextChanged(object sender, EventArgs e)
        {
            if (m_SendMessageBox.Text == m_HelpText)
            {
                m_SendMessageBox.Font      = m_BackupFont;
                m_SendMessageBox.ForeColor = Color.LightGray;

                m_HasValidSendString = false;

                return;
            }

            m_SendMessageBox.Font = m_InputFont;

            if (File.Exists(NgimuApi.Helper.ResolvePath(m_SendMessageBox.Text)) == true)
            {
                m_HasValidSendString = true;

                m_SendMessageBox.ForeColor = Control.DefaultForeColor;
            }
            else
            {
                OscPacket packet;

                m_HasValidSendString = OscPacket.TryParse(m_SendMessageBox.Text.Trim(), out packet);

                m_SendMessageBox.ForeColor = m_HasValidSendString ? Control.DefaultForeColor : Color.Red;
            }
        }