Problem with linking library Programming Software Development by bejfake …->General : added to additional library directories a "D:\dahua\" directory which includes files dhnetsdk.lib, dhnetsdk.dll, dhnetsdk…++->General : added to additional include directories a "D:\dahua\" directory I included files by directive #include : dhnetsdk.h… Re: reading data from DVR Programming Software Development by BobS0327 … only two that I'm aware of are Dahua and Axis. The Dahua brand is not sold in North America under that… name. The Dahua line is usually rebranded as Qvis, Mace or some other… Re: reading data from DVR Programming Software Development by BobS0327 … banking and retail sectors. This quality hardware is very expensive. [Dahua](http://www.dahuasecurity.com/English/supporttool.aspx?type=3003#) which…://nellyssurplus.com/). Contact them to get details on a rebranded Dahua. One last option is to purchase a PC capture card… Re: Problem with linking library Programming Software Development by Ancient Dragon You might have that problem if the library was built a C code and your program is attempting to call it's functions as C++ code. If that is the case then you need to tell the compiler that the library is C and not C++. #ifdef __cplusplus extern "C" { #endif #include "dhnetsdk.h" #ifdef __cplusplus }… Re: Problem with linking library Programming Software Development by bejfake Your solution doesn't work, still LNK2019 and LNK1120 Re: Problem with linking library Programming Software Development by nullptr What compiler are you using? Are you building it as Win64? Re: Problem with linking library Programming Software Development by bejfake I forgot to write here. I solved this problem, you are right - it was problem with architecture. I had to build as Win64. I worked it out myself, but anyway thank you.