private static extern bool VSNET_ClientStartNomalCap(int hHandle, m_nomalvideo nomalvideo, IntPtr pvideocontext,
     m_nomalaudio nomalaudio, IntPtr paudiocontext);
 public static extern bool VSNET_ClientStartNomalCap(int hHandle, m_nomalvideo nomalvideo, IntPtr pvideocontext, m_nomalaudio nomalaudio, IntPtr paudiocontext);