[Ipopt] Using smart pointers

[Krish Krishnan]

Hi All:

I have a windows application using MFC to create an optimized portfolio of common stock.  I used the cpp example as a template and derived my class from TNLP.  The difference between my implementation and that in the example is that I have many new members and a few more functions (to access data in databases ) etc.

When I try to compile this, the compiler complains that the new data members are not part of the TNLP class.  For example some of the error messages are below:

rojects\bmopt\bmopt\createcase.cpp(262) : error C2039: 'm_caseFileName' : is not a member of 'Ipopt::TNLP'
1>        c:\optdir\iptnlp.hpp(48) : see declaration of 'Ipopt::TNLP'
1>c:\documents and settings\kris\my documents\projects\bmopt\bmopt\createcase.cpp(264) : error C2039: 'm_assetBoundsDB' : is not a member of 'Ipopt::TNLP'
1>        c:\optdir\iptnlp.hpp(48) : see declaration of 'Ipopt::TNLP'
1>c:\documents and settings\kris\my documents\projects\bmopt\bmopt\createcase.cpp(265) : error C2039: 'm_assetBoundsTable' : is not a member of 'Ipopt::TNLP'
1>        c:\optdir\iptnlp.hpp(48) : see declaration of 'Ipopt::TNLP'
1>c:\documents and settings\kris\my documents\projects\bmopt\bmopt\createcase.cpp(267) : error C2039: 'm_assetReturnDB' : is not a member of 'Ipopt::TNLP'
1>        c:\optdir\iptnlp.hpp(48) : see declaration of 'Ipopt::TNLP'



But this is not right, and these members are present in the derived class.  I declare the smart pointer thus:

    SmartPtr<TNLP> p_optdata;
and instantiate it as p_optdata = new COpt() where COpt is the derived class from TNLP.

Is there some other way I should treat this derived class?  If any more information is needed, please let me know?  

I even tried SmarPtr<COpt> p_optdata.  The compiler does not like this.  The complaints about the new data members are gone. but instead I get

1>c:\documents and settings\kris\my documents\projects\bmopt\bmopt\bmoptdoc.cpp(105) : error C2664: 'Ipopt::IpoptApplication::OptimizeTNLP' : cannot convert parameter 1 from 'Ipopt::SmartPtr<T>' to 'const Ipopt::SmartPtr<T> &'
1>        with
1>        [
1>            T=COpt
1>        ]
1>        and
1>        [
1>            T=Ipopt::TNLP
1>        ]
1>        Reason: cannot convert from 'Ipopt::SmartPtr<T>' to 'const Ipopt::SmartPtr<T>'
1>        with
1>        [
1>            T=COpt
1>        ]
1>        and
1>        [
1>            T=Ipopt::TNLP
1>        ]
1>        No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called

I guess this is because oc the const declaration.


Any way I can solve this issue?  This is the very last part of my implementation, and any help would be appreciated.

Thanks in advance

Krish


      
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