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From:Michael Nye Date:March 25 2007 8:16am
Subject:Re: Problems with Visual C++
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Hi again,

I fixed the previous errors as it appeared I had the #include 
<mysql++.h> in the wrong position.  By putting it at the very start of 
the program rather then after including the standard header file, all 
the errors went away.  But now I have a new error!  My include code 
looks as follows,

//Login.cpp
#include <mysql++.h>
#include "StdAfx.h"
#include "Login.h"
#include "Main.h" // The second form that opens after login
using namespace APOSSv2; // APOSSv2 is the project name

And now when i type mysqlpp:: it comes up with the autofill box and 
gives me the option to use Connection, but when I put the code

mysqlpp::Connection con(false);

into a function and compile it I get compile errors (it compiles and 
runs fine without mysqlpp::Connection con(false); code):

.\Login.cpp(15) : error C2653: 'mysqlpp' : is not a class or namespace name
.\Login.cpp(15) : error C2065: 'Connection' : undeclared identifier
.\Login.cpp(15) : error C2146: syntax error : missing ';' before 
identifier 'con'
.\Login.cpp(15) : error C3861: 'con': identifier not found

I've had a look around the web and most of the solutions are "make sure 
you have included the header file" which I have done as far as I can 
see.  The strange thing to me is that why would it autocomplete and then 
say it can't find the namespace.  I thought it might still have 
something to do with the placement of the #inlcude statement, so i try 
it in the last possible position in between stdafx.h and login.h,

//Login.cpp
#include "StdAfx.h"
#include <mysql++.h>
#include "Login.h"
#include "Main.h"
using namespace APOSSv2;

which results in errors as follows (the error lines are too long to put 
in an email, but they start like this...

Login.obj : error LNK2028: unresolved token (0A00084D) "void __cdecl 
mysqlpp::create_vector<class...
Login.obj : error LNK2028: unresolved token (0A00084E) "void __cdecl 
mysqlpp::create_vector(unsign...
Login.obj : error LNK2020: unresolved token (0A00085D) "private: static 
class mysqlpp::mysql_ti_...
Login.obj : error LNK2020: unresolved token (0A000860) "private: static 
class mysqlpp::mysql_t...
Login.obj : error LNK2001: unresolved external symbol "private: static 
class mysqlpp::mysql_ti_sq...
Login.obj : error LNK2001: unresolved external symbol "private: static 
class mysqlpp::mysql_t...
Login.obj : error LNK2019: unresolved external symbol "void __cdecl 
mysqlpp::create_v...
Login.obj : error LNK2019: unresolved external symbol "void __cdecl 
mysqlpp::create_v...

And if I include it anywhere below #include "Login.h" I get the [[[[ 
error C2872: 'IServiceProvider' : ambiguous symbol... ]]] which was the 
original problem.  I'm very inexperienced with Visual C++ so really 
don't have much of an idea what is going wrong.  A bit of code or a 
sample project which uses windows forms and mysql++ that I could play 
with to see where I've gone wrong, or any fixes to the above problems 
would be great.

Thanks,

Michael.
Thread
Problems with Visual C++Michael Nye23 Mar
  • Re: Problems with Visual C++Warren Young23 Mar
    • Re: Problems with Visual C++Michael Nye24 Mar
      • Re: Problems with Visual C++gary clark24 Mar
        • Re: Problems with Visual C++Michael Nye25 Mar
          • RE: Problems with Visual C++Jim Wallace25 Mar
            • Re: Problems with Visual C++Michael Nye26 Mar
              • RE: Problems with Visual C++Jim Wallace26 Mar
                • Re: Problems with Visual C++Michael Nye28 Mar
        • Re: Problems with Visual C++Michael Nye26 Mar
Re: Problems with Visual C++Andre Sodermans29 Mar
  • Re: Problems with Visual C++Warren Young29 Mar
    • RE: Problems with Visual C++Matt Dargavel29 Mar
    • Re: Problems with Visual C++Warren Young29 Mar