Link error MicroSoft Visual C++ V6

Question

TBillingSchedule.obj : error LNK2001: unresolved external symbol "public: void __thiscall TBillingRegister::CalculateSpread(short const &)" (?CalculateSpread@TBillingRegister@@QAEXABF@Z)
Debug/CorCE30D.dll : fatal error LNK1120: 1 unresolved externals

Method is defined in TBillingRegister.h

public:

 void    CalculateSpread( const VARIANT_BOOL& bResetOnly = VARIANT_FALSE );

Called in TBillingSchedule.cpp

pBill->CalculateSpread(VARIANT_FALSE);

What is wrong with this?

Answer 1

On 5/16/2012 7:44 PM, sturm254 wrote:

TBillingSchedule.obj : error LNK2001: unresolved external symbol "public: void __thiscall TBillingRegister::CalculateSpread(short const&)" (?CalculateSpread@TBillingRegister@@QAEXABF@Z<mailto:?CalculateSpread@TBillingRegister@@QAEXABF@Z>)
Debug/CorCE30D.dll : fatal error LNK1120: 1 unresolved externals

Method is defined in TBillingRegister.h

public:

  void    CalculateSpread( const VARIANT_BOOL&  bResetOnly = VARIANT_FALSE );

Called in TBillingSchedule.cpp

pBill->CalculateSpread(VARIANT_FALSE);

What is wrong with this?

You have a declaration of the method, and you are calling the method, but you are missing the third part - the actual code implementing the method.

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Igor Tandetnik

Answer 2

The implementation is in TBillingRegister.cpp

void TBillingRegister::CalculateSpread( const VARIANT_BOOL& bResetOnly )

Answer 3

sturm254 wrote:

The implementation is in TBillingRegister.cpp

void TBillingRegister::CalculateSpread( const VARIANT_BOOL& bResetOnly  )

Check that TBillingRegister.cpp is actually added to the project, that  the method definition is not being #ifdef-ed away - that sort of thing.  Somehow or other, the method implementation is not being made available  to the linker.

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Igor Tandetnik

Answer 4

That was problem TBillingRegister.cpp was not added to the project.  Thanks for you help.