/// <summary>
        /// 设置音量
        /// </summary>
        public Int32 SetAudioVolume(UInt32 _uVolume)
        {
            Int32 iRet = -1;

            if (m_lHandle != -1)
            {
                iRet      = VsClientAPI.VSSP_ClientAudioVolum(m_lHandle, _uVolume);
                m_iVolume = _uVolume;
            }
            return(iRet);
        }
        /// <summary>
        /// 打开音频
        /// </summary>
        public Int32 OpenAudio()
        {
            Int32 iRet = -1;

            if (m_lHandle != -1)
            {
                if (m_bConnected == true)
                {
                    iRet = VsClientAPI.VSSP_ClientPlayAudio(m_lHandle);
                    if (m_iVolume != 0)
                    {
                        iRet = VsClientAPI.VSSP_ClientAudioVolum(m_lHandle, m_iVolume);
                    }
                }
            }
            return(iRet);
        }