Set the decoding status of the current channel or window.
BOOL NET_DVR_MatrixSetDecChanEnable( LONG lUserID, DWORD dwDecChanNum, DWORD dwEnable );
[IN] Value returned by NET_DVR_Login_V40.
[IN] Decoding channel No. or window No.
[IN] 0-Disable, 1-Enable
Return TRUE for success, and return FALSE for failure.
If FALSE is returned, you can call NET_DVR_GetLastError to get the error code.
If the parameter dwEnable is set to 0, the decoding of the current window will be paused even the window is in dynamic or auto-switch decoding mode.