Re: Problem with linker

From:

=?Utf-8?B?a2FyaW0=?= <karim@discussions.microsoft.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Mon, 4 Jun 2007 21:19:00 -0700

Message-ID:

<53173E09-A7B6-4B46-8122-3F30C36BA182@microsoft.com>

Hi Asm,
Thanks for your replys. i modified the code as follows.

LPSTR lpszKeyWordData;
//Actually it was LPSTR only i posted wrong like LPTSTR (sorry for that)

char *cpFromDataPoint, *cpToDataPoint, *cpDataPoint;

cpToDataPoint = strstr(lpszKeyWordData , ",");
if(cpToDataPoint == NULL)
{...........;
}
else
*(cpToDataPoint++) = '\0';

cpDataPoint = strstr(cpFromDataPoint, "FIELDSEPPOS");
if(cpDataPoint == NULL)
{
          cpDataPoint = strstr(cpFromDataPoint, "ENDTRACK");
    if(cpDataPoint == NULL)
    {
                  .........................;
                  }
}
but still my error list same like below. please help me out..
**********************error list*******************************
Creating library .\Release/simidc.lib and object .\Release/simidc.exp
comsupp.lib(comutil.obj) : error LNK2005: "class _variant_t vtMissing"
(?vtMissing@@3V_variant_t@@A) already defined in comsuppw.lib(comutil.obj)

simwfp.lib(SimFlexGrid.obj) : error LNK2001: unresolved external symbol
"public: __thiscall CSimString::CSimString(unsigned short const *)"
(??0CSimString@@QAE@PBG@Z)

simwfp.lib(SimDefaultEventProcessor.obj) : error LNK2019: unresolved
external symbol "public: __thiscall CSimString::CSimString(unsigned short
const *)" (??0CSimString@@QAE@PBG@Z) referenced in function
__ehhandler$??1CSimDefaultEventProcessor@@UAE@XZ

simwfp.lib(SimGlobals.obj) : error LNK2019: unresolved external symbol
"public: static class CSimTrace * __stdcall CSimTrace::Instance(unsigned
short *)" (?Instance@CSimTrace@@SGPAV1@PAG@Z) referenced in function "long
__stdcall WFPOpen(unsigned short,char *,void *,char *,unsigned long,unsigned
long,struct HWND__ *,unsigned long,void *,unsigned long,struct
CENXFS3_02::_wfsversion *,unsigned long,struct CENXFS3_02::_wfsversion *)"
(?WFPOpen@@YGJGPADPAX0KKPAUHWND__@@K1KPAU_wfsversion@CENXFS3_02@@K3@Z)
simwfp.lib(SimGlobals.obj) : error LNK2019: unresolved external symbol
"unsigned short const * const IDS_API_DB_FILE_ERROR"
(?IDS_API_DB_FILE_ERROR@@3QBGB) referenced in function "void __stdcall
CheckDBFileStatus(unsigned short *)" (?CheckDBFileStatus@@YGXPAG@Z)
simwfp.lib(SimGlobals.obj) : error LNK2019: unresolved external symbol
"public: void __thiscall CSimString::TagField(unsigned short const *)"
(?TagField@CSimString@@QAEXPBG@Z) referenced in function "void __stdcall
CheckDBFileStatus(unsigned short *)" (?CheckDBFileStatus@@YGXPAG@Z)
simwfp.lib(SimGlobals.obj) : error LNK2019: unresolved external symbol
"unsigned short const * const IDS_API_DB_READ_ONLY"
(?IDS_API_DB_READ_ONLY@@3QBGB) referenced in function "void __stdcall
CheckDBFileStatus(unsigned short *)" (?CheckDBFileStatus@@YGXPAG@Z)
simwfp.lib(simcommandeditor.obj) : error LNK2001: unresolved external symbol
"public: class CSimString & __thiscall CSimTrace::GetErrorDescription(enum
_SIM_ERROR_CATEGORY,unsigned short const *,unsigned long)"
(?GetErrorDescription@CSimTrace@@QAEAAVCSimString@@W4_SIM_ERROR_CATEGORY@@PBGK@Z)

Release_Image/simidc.dll : fatal error LNK1120: 96 unresolved externals
Results Build log was saved at
"file://c:\TestSandBox\simidc\Release\BuildLog.htm"
SimIDC - 228 error(s), 3 warning(s)

************************************************************
Thanks alot for your supporting............

- karimulla

"MrAsm" wrote:

On Mon, 4 Jun 2007 00:18:01 -0700, karim
<karim@discussions.microsoft.com> wrote:

char *cpFromDataPoint, *cpToDataPoint, *cpDataPoint;
......
/* first if condition*/
if( (cpToDataPoint = const_cast<char *>(strstr( (const
char*)lpszKeyWordData, (const char *)","))) == NULL)
{

You wrote over-complicated code...why??
Do you like excess of complexity?

From here:

  http://www.cplusplus.com/reference/clibrary/cstring/strstr.html

you can read that in C++ there are two prototypes of strstr:

const char * strstr ( const char * str1, const char * str2 );
       char * strstr ( char * str1, const char * str2 );

So, why don't you just write:

  if ( (cpToDataPoint = strstr( KeyWordData, "," )) == NULL )
     ...

Moreover, your code has an error, because you are mixing Unicode-aware
string (LPTSTR) with Ansi strings (char *).
You can't use LPTSTR lpszKeyWordData in a context where an Ansi string
is required (like strstr), and the (const char *)lpszKeyWordData cast
is a time-bomb bug.

You have 2 options:

1. convert lpszKeyWordData from LPTSTR to 'char *' using *proper*
conversion (e.g. CT2A) or

2. program Unicode-aware everywhere, so e.g. use Unicode aware
routines like _tcsstr instead of strstr, and decorate your literal
strings using _T("") (i.e. write _T(","), _T("ENDTRACK"), etc.).

You should review and adjust your code as indicated above.

Then try to rebuild.

error LNK2005: "class _variant_t vtMissing" (?vtMissing@@3V_variant_t@@A)
already defined in comsuppw.lib(comutil.obj) comsupp.lib

[cut]

We have already answered this question in another thread. You did not
give feed-back to us, and now you are relisting the same problems ?_?

Also considering the portion of source you posted, I think that you
have errors due to Unicode unaware programming, and mixing Ansi and
Unicode in your source code.

MrAsm