lnk2019

I'm trying to compile a simple face detection program in C++ in VS2010 and have come across two LNK 2019 errors: Error 2 error LNK2019: unresolved external symbol _cvReleaseHaarClassifierCascade referenced in function _main Error 3 error LNK2019: unresolved external symbol _cvHaarDetectObjects referenced in function "void __cdecl detectFaces(struct _IplImage *)" (?detectFaces@@YAXPAU_IplImage@@@Z) Relevant code lines: cvReleaseHaarClassifierCascade( &cascade ); ... CvSeq *faces = cvHaarDetectObjects( img, cascade, storage, 1.1, 3, 0, /*CV_HAAR_DO_CANNY_PRUNNING*/ cvSize( 40, 40 ) ); I couldn't

When I add #include <fstream> and try to use std::ifstream (i.e. std::ifstream ifile(pDest)) in my library I get the following linker errors when compiling a project whih uses the library: Error 2 error LNK2019: unresolved external symbol __CrtDbgReportW referenced in function "public: wchar_t * & __thiscall std::vector<wchar_t *,class std::allocator<wchar_t *> >::operator[](unsigned int)" (??A?$vector@PA_WV?$allocator@PA_W@std@@@std@@QAEAAPA_WI@Z) C:\zipprojnotworking\CPP\7zip\UI\TestingZipper\Console.lib(ZipLib.obj) TestingZipper Error 3 error LNK2001: unresolved external symbol _

Possible Duplicate: Pure virtual destructor in C++ I have two classes: the abstract "Game" class and the derived "TestGame" class. All of the functions in TestGame are implemented separately to nothing (for the sake of getting it to compile). I am only getting one error: TestGame.obj : error LNK2019: unresolved external symbol "public: virtual __thiscall Game::~Game(void)" (??1Game@@UAE@XZ) referenced in function "public: virtual __thiscall TestGame::~TestGame(void)" (??1TestGame@@UAE@XZ) Here are my class definitions: class Game { public: virtual ~Game(void) = 0; virtual bool Initialize() = 0

I am brand new to OpenCV and have been trying to set it up in Visual Studios 2010 Ultimate. I have followed the documentation exactly, and linked the files as it said. Here are the additional libraries that I am using: opencv_core231d.lib opencv_imgproc231d.lib opencv_highgui231d.lib opencv_ml231d.lib opencv_video231d.lib opencv_features2d231d.lib opencv_calib3d231d.lib opencv_objdetect231d.lib opencv_contrib231d.lib opencv_legacy231d.lib opencv_flann231d.lib And all of their Release counterparts. However, when I try to debug & compile the sample code given to me, I get the following errors.

I am sending a simple email in C++. I downloaded a sample C++ program from the below link. http://cboard.cprogramming.com/cplusplus-programming/125655-sending-simple-email-cplusplus.html The sample program seems to hit the following error when it is compiling. Please help me with solution. Error 8 error LNK2019: unresolved external symbol _send_mail referenced in function _wmain Error 9 error LNK2019: unresolved external symbol __imp__recv@16 referenced in function "int __cdecl connect_to_server(char const *)" (?connect_to_server@@YAHPBD@Z) Error 10 error LNK2019: unresolved external symbol _

This question already has an answer here: What is an undefined reference/unresolved external symbol error and how do I fix it? 32 answers I've downloaded this C++ code from the SBIG website in order to control (take pictures and save them) the camera (model ST-401ME) which I purchased from them. I have a Matlab program which needs to call this so I'm trying to compile (with Visual Studio) this code with its headers and libraries into an executable. However, when I try I get the above mentioned error. Just to note I have added the files which contain the libraries to the directory path. The

I'm trying to compile and run a C code that is using libsndfile library for sound files processing. I have added the header file using this path: project's Properties (in C/C++ -> General -> Additional Include Directories) Also i have linked the library using this path: Project Properties -> Linker -> Input -> Additional Dependencies. But while debugging, i get the following errors: 1>sil.obj : warning LNK4075: ignoring '/EDITANDCONTINUE' due to '/INCREMENTAL:NO' specification 1>sil.obj : error LNK2019: unresolved external symbol _sf_write_sync referenced in function _main 1>sil.obj : error