Get the decoding status of the current decoding channel or window.
BOOL NET_DVR_MatrixGetDecChanEnable( LONG lUserID, DWORD dwDecChanNum, DWORD *lpdwEnable );
[IN] Value returned by NET_DVR_Login_V40.
[IN] Decoding channel No. or window No.
[OUT] Status: 0-Disabledd, 1-Enabled
Return TRUE for success, and return FALSE for failure.
If FALSE is returned, you can call NET_DVR_GetLastError to get the error code.