Error with linking

hmm.. im not too sure. third library as in?

What does STL stands for? I guess i will create an new project again and build it again.

Previously i did not create new project rather than i use other source code and paste it onto the same project again. Maybe because of that .obj got mix up?

>>>> What does STL stands for?
It means Standard Template Library and is a bunch of template classes (mostly containers like vector, map, basic_string ...) and template functions which make up an important part of the C++ standard. As it is templates there are no cpp files involved but only header files. When including the headers and using any of the classes in your sources the templates will be instantiated with the concrete template type you were using.

The error message you got means that the module magnifier.cpp (probably a .cpp) was compiled and the compiler has added a reference to "__declspec(dllimport) public: __thiscall std::_Container_base_secure::~_Container_base_secure(void)" what is the destructor of the STL helper class  Container_base_secure. But, if such a destructor really was needed, the object code for it should have been added by the compiler as well. Instead it has added an "external symbol" reference what means that the destructor should be provided by another object or libray file (what rarely makes sense for STL code).

I assume there is a mistake in either using different versions of STL in different libraries or in the interface to or from a dll there is a STL object passed by value or needs an implicit construction/destruction as there is some default value in the argument list. It also can happen by mixing up import and export specifiers in the declaration.

       

You can try to rebuild solution, or clean & build.

still cannot... i still got the error.

This is the error

1>------ Build started: Project: blob detection, Configuration: Debug Win32 ------
1>Linking...
1>blob detection.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall std::_Container_base_secure::~_Container_base_secure(void)" (__imp_??1_Container_base_secure@std@@QAE@XZ) referenced in function "protected: __thiscall std::_Container_base_aux_alloc_empty<class std::allocator<struct std::pair<unsigned int const ,struct blob> > >::~_Container_base_aux_alloc_empty<class std::allocator<struct std::pair<unsigned int const ,struct blob> > >(void)" (??1?$_Container_base_aux_alloc_empty@V?$allocator@U?$pair@$$CBIUblob@@@std@@@std@@@std@@IAE@XZ)
1>blob detection.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __thiscall std::_Container_base_secure::_Orphan_all(void)const " (__imp_?_Orphan_all@_Container_base_secure@std@@QBEXXZ) referenced in function "protected: void __thiscall std::vector<class std::vector<struct lineBlob,class std::allocator<struct lineBlob> >,class std::allocator<class std::vector<struct lineBlob,class std::allocator<struct lineBlob> > > >::_Tidy(void)" (?_Tidy@?$vector@V?$vector@UlineBlob@@V?$allocator@UlineBlob@@@std@@@std@@V?$allocator@V?$vector@UlineBlob@@V?$allocator@UlineBlob@@@std@@@std@@@2@@std@@IAEXXZ)
1>blob detection.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall std::_Container_base_secure::_Container_base_secure(void)" (__imp_??0_Container_base_secure@std@@QAE@XZ) referenced in function "protected: __thiscall std::_Container_base_aux_alloc_empty<class std::allocator<class std::vector<struct lineBlob,class std::allocator<struct lineBlob> > > >::_Container_base_aux_alloc_empty<class std::allocator<class std::vector<struct lineBlob,class std::allocator<struct lineBlob> > > >(class std::allocator<class std::vector<struct lineBlob,class std::allocator<struct lineBlob> > >)" (??0?$_Container_base_aux_alloc_empty@V?$allocator@V?$vector@UlineBlob@@V?$allocator@UlineBlob@@@std@@@std@@@std@@@std@@IAE@V?$allocator@V?$vector@UlineBlob@@V?$allocator@UlineBlob@@@std@@@std@@@1@@Z)
1>C:\Documents and Settings\biob202\Desktop\ax fyp\blob detection\Debug\blob detection.exe : fatal error LNK1120: 3 unresolved externals
1>Build log was saved at "file://c:\Documents and Settings\biob202\Desktop\ax fyp\blob detection\blob detection\Debug\BuildLog.htm"
1>blob detection - 4 error(s), 0 warning(s)
                                              

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Anyway i solved the error already. Is there a way to detect blob in red in colour? Let's say like something moving then the blob will be red in colour.

I used a source code but it only appear to detect light object.

For example, live webcam , when i show the webcam to the lights, it will only detect the light..

Hey can you help me on blob? i need it urgently by today. Thanks

>>>> Anyway i solved the error already.
Can you tell what you've done to solve the error?

>>>> Hey can you help me on blob?
Hmm. 'blob' normally means 'binary large object' what is an expression for a data field stored in a database which contains a big amount of raw (binary) data, e. g. from an image or data from a file.

You seem to use the name 'blob' for some object (part) of an image which can be detected by analytical methods.