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Questions tagged [lnk2019]

LNK2019 is a common MSVC linker error indicating that the linker was unable to find a required external symbol in any compilation unit. Check the SO post on common errors and their resolution.

LNK2019 is a common MSVC linker error indicating that the linker was unable to find a required external symbol in any compilation unit. A possible and common cause of the error is a symbol that is declared but never defined.

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LNK 2019 ShellExecuteEx unresolved external symbol Qt Creator

I work on Windows7 x64 in c++ language. I created a project that open firefox browser when I show a marker to my web cam, using ShellExecuteEx function. My project works well with visual studio 2010. But, when I try to run my project with Qt…
Cristina1986
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Getting linking error 2019 although class is not derived from CString class in VS2010

i am getting the following error error LNK2019: unresolved external symbol "public: class ATL::CStringT > > __thiscall CFILicenseSettings::GetCodeStartup1(void)" …
Dany
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C++ LNK 2019 error in GLUT game

Apologies for the poor question title, I wasn't sure how to ask this. I am getting a LNK2019 error when trying to compile my GLUT game and I cannot spot what is causing the error. The error: main.obj : error LNK2019: unresolved external symbol…
Daniel Flannery
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C++ : error LNK2019: unresolved external symbol

Possible Duplicate: What is an undefined reference/unresolved external symbol error and how do I fix it? So I have compared my issue to the vast library of problems that have spawned from this category on this site. I still have no clue as to why…
user1763527
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getting error LNK2019 when i use std::auto_ptr

i ahve a class named FiniteStateMachine declared as below header file : FiniteStateMachine.h class FiniteStateMachine { public: //Constructor FiniteStateMachine(); //Destructor ~FiniteStateMachine(); } source…
Benyamin Jane
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calling a function defined in a header file from a Class constructor in C++

I have a header file, let's call it header1.h with the definition of a function, let's say myFunc() in it. My C++ project has a source file, let's call it main.cpp and a header file main.h. I have included header1.h in the main.h and then included…
TJ1
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Error 21 error LNK2019: unresolved external symbol "public: __thiscall

I can't figure out where my error is. I get the message: Error 21 error LNK2019: unresolved external symbol "public: __thiscall ParticleAnchoredSpring::ParticleAnchoredSpring(class Vector3 *,float,float)"…
David Johnson
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OpenHaptics not compliling

So I am new to c++ and over the last few days I have been attempting to get a program to compile. I downloaded OpenHaptics for my phantom OMNI and have been attempting to get a simple sphere program to compile. There errors it is giving me are as…
Matthew Rayl
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Error LNK2019 simple Linked List implementation

I am implementing a simple Linked List, but I keep getting the LNK2019 error, I simplified my code to the minimum to track the problem,but I keep getting it. I am using Visual Studio 2010. My header file is: #ifndef __TSLinkedList__H__ #define…
amaurs
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Unable to resolve error LNK2019: unresolved external symbol

I have a solution in Visual Studio, it has 2 projects namely PAL_TEST and Unit_Test. I have a class in PAL_TEST, CPALResponse.h #include "CFW_Stl.h" class CPALResponse { public: void SetCommandSucceeded(bool bCommandSucceeded = false); …
Anubhav Agarwal
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Qt LNK2019, LNK2001, LNK1120 Errors with QT Multimedia [Visual Studio Express '10]

For some reason, whenever I try to use sample code my compiler refuses to cooperate. The sample code I am using comes from here: http://qt-project.org/doc/qt-4.8/multimedia-videowidget.html ; I have currently only used the VideoWidgetSurface…
JT Cho
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Error at MATLAB: cvlib_mex.obj : error LNK2019: unresolved external symbol (while trying to using cvlib_mex.c in MATLAB)

I am really in a very bad situation with my project. It is working with my 32bit-desktop and with the same versions of MATLAB (R2012a) and Visual Studio 2010 Express but it is not working on 64-bit laptop. Last error is below: while I am trying to…
Altug Goker
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LNK 2019 Error using custom class in MFC

I developed two classes for running a camera frame grabber in a console app (one to grab the images and one to process them) and would now like to implement these classes into an MFC project. The class works fine in the console app. When I…
GregD
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Visual Studio C++ 2010 Link Error

I'm getting several error LNK2019: unresolved external symbol errors, but they're not due to dlls, libs, or OO errors as in every other StackOverflow post about this link…
mcandre
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Linking Issue: Unable to Find Function Implementation of Header File Reference in Another Project

I'm encountering a linking issue and I'm hoping to get some help here. I have a project that includes a header file app.h and a source file app.cpp. I've declared a class dev in app.h, and within it, I've declared a function ksb. I've implemented…
helong jin
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