Implement remote control.
BOOL NET_DVR_RemoteControl( LONG lUserID, DWORD dwCommand, LPVOID lpInBuffer, DWORD dwInBufferSize );
[IN] Value returned by NET_DVR_Login_V40.
[IN] Control commands. To realize different functions, the commands are different.
[IN] Input parameters, which vary with different control commands.
[IN] Size of input parameters.
Returns TRUE for success, and returns FALSE for failure.
If FALSE is returned, you can call NET_DVR_GetLastError to get the error code.