c++ - 链接器找不到函数定义，LNK2001 未解析的外部符号

Question

这是我的简单设置:(我隐藏了很多不需要的信息)

//AutoFocusTest.h
#include "camAVTEx.h"

class CAutoFocusTestApp : public CWinApp
{
protected:
    camera_t* mCamera;

public:
    virtual BOOL InitInstance();
};

//camAVTEx.h
class camera_avtcam_ex_t : public camera_t
{
public:
    camera_avtcam_ex_t();
    virtual ~camera_avtcam_ex_t();

    //member variables

    //member function declarations
}

//camAVTEx.cpp
#include "camAVTEx.h"

camera_avtcam_ex_t::camera_avtcam_ex_t()
{
    //stuff
}

camera_avtcam_ex_t::~camera_avtcam_ex_t()
{
    //stuff
}

//the rest are defined here in my program

//AutoFocusTest.cpp
#include AutoFocusTest.h

BOOL CAutoFocusTestApp::InitInstance()
{
    mCamera = new camera_avtcam_ex_t();
}

此设置产生错误:

3>AutoFocusTest.obj : error LNK2001: unresolved external symbol "public: __cdecl camera_avtcam_ex_t::camera_avtcam_ex_t(void)" (??0camera_avtcam_ex_t@@QEAA@XZ)

从我读到的关于这个相对常见问题的所有内容来看，我没有链接导致找不到我的 camera_avtcam_ex_t 函数定义的内容。但是，我无法弄清楚我可能错过了什么。我已经添加了所有包含目录和库目录，并将库文件添加到附加依赖项部分。

谁能发现我可能遗漏的任何东西？

Answer 1

假设您已经为您的camera_avtcam_ex_t定义构造函数，它被声明为private，您不能实例化它。