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From:gary clark Date:March 24 2007 1:09pm
Subject:Re: Problems with Visual C++
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Hi Michael,

The mysql++ is not a managed C++ library its meant to
be built for different OS platforms. The replacement
of * with ^ for pointers is typical for managed C++.

I have built a project using managed C++ and simply
built the library and used the mysql++ library
makefile as is i.e linked in the library. You may get
warnings but should not see errors. Do not attempt to
build the mysql++ library as as CLR project.

Thanks,
Garyc

--- Michael Nye <michael.nye@stripped> wrote:

> Hello again,
> 
> Yep I followed those instructions, and to make sure
> I hadn't done 
> anything wrong I even tried putting a form into one
> of the examples 
> which made it stop compiling.  There is a warning
> you get when adding a 
> form to the mysql++ example which says
> 
> "You are adding a CLR component to a native project.
>  Your project will 
> be converted to have Common Language Runtime
> support. Do you wish to 
> continue"
> 
> , and below is the error output (no code on the form
> or modification to 
> simple1):
> 
>     ------ Build started: Project: simple1,
> Configuration: Debug Win32
>     ------
>     Compiling...
>     cl : Command line warning D9025 : overriding
> '/EHa' with '/EHs'
>     cl : Command line error D8016 : '/clr' and
> '/EHs' command-line
>     options are incompatible
>     Build log was saved at "file://c:\Program
>    
>
Files\MySQL\mysql++-2.2.1\Debug\simple1\BuildLog.htm"
>     simple1 - 1 error(s), 1 warning(s)
> 
> If I do it the other way around and try to include
> "mysql++.h" into a 
> windows form project, it spits out alot of errors
> (this project has been 
> set up as described in README.vc, with all the links
> to 
> libraries/includes/dependencies inserted).  I can't
> fit all the errors 
> in but here are some of them (106 in total):
> 
> ------ Build started: Project: Test, Configuration:
> Debug Win32 ------
> Compiling...
> Login.cpp
> D:\Microsoft Visual Studio
> 8\VC\PlatformSDK\include\objidl.h(7408) : 
> error C2872: 'IDataObject' : ambiguous symbol
>         could be 'D:\Microsoft Visual Studio 
> 8\VC\PlatformSDK\include\objidl.h(246) : 
> System::Windows::Forms::IDataObject IDataObject'
>         or 
>
'c:\windows\microsoft.net\framework\v2.0.50727\system.windows.forms.dll
> 
> : System::Windows::Forms::IDataObject'
> D:\Microsoft Visual Studio
> 8\VC\PlatformSDK\include\objidl.h(7408) : 
> error C3699: '*' : cannot use this indirection on
> type 'IDataObject'
>         compiler replacing '*' with '^' to continue
> parsing
> D:\Microsoft Visual Studio
> 8\VC\PlatformSDK\include\objidl.h(7422) : 
> error C2371: 'IDataObject' : redefinition; different
> basic types
>         D:\Microsoft Visual Studio 
> 8\VC\PlatformSDK\include\objidl.h(246) : see
> declaration of 'IDataObject'
> D:\Microsoft Visual Studio
> 8\VC\PlatformSDK\include\objidl.h(7583) : 
> error C2872: 'IDataObject' : ambiguous symbol
>         could be 'D:\Microsoft Visual Studio 
> 8\VC\PlatformSDK\include\objidl.h(7422) :
> IDataObject'
>         or 
>
'c:\windows\microsoft.net\framework\v2.0.50727\system.windows.forms.dll
> 
> : System::Windows::Forms::IDataObject'
> 
> <CUT HERE>
> 
> c:\program
> files\mysql\mysql++-2.2.1\lib\connection.h(52) :
> error C3389: 
> __declspec(dllexport) cannot be used with /clr:pure
> or /clr:safe
> c:\program
> files\mysql\mysql++-2.2.1\lib\connection.h(57) :
> error C3389: 
> __declspec(dllexport) cannot be used with /clr:pure
> or /clr:safe
> c:\program
> files\mysql\mysql++-2.2.1\lib\connection.h(117) :
> error 
> C3395: 'mysqlpp::Connection::Connection' :
> __declspec(dllexport) cannot 
> be applied to a function with the __clrcall calling
> convention
> c:\program
> files\mysql\mysql++-2.2.1\lib\connection.h(117) :
> fatal error 
> C1003: error count exceeds 100; stopping compilation
> Build log was saved at "file://e:\Visual C++ 
> Project\Test\Debug\BuildLog.htm"
> Test - 106 error(s), 0 warning(s)
> ========== Build: 0 succeeded, 1 failed, 0
> up-to-date, 0 skipped ==========
> 
> 
> As much as I try to search around on the web, there
> seems to be little 
> to no examples of people using windows forms but
> rather just console 
> output which made me concerned.  Hope the extra info
> helps.
> 
> Michael.
> 
> 
> 
> Warren Young wrote:
> > Michael Nye wrote:
> >>
> >> I'm trying to make a Windows Form program in
> Visual C++ that can 
> >> interact with a mySQL database,
> >
> > Did you follow the instructions in README.vc?  Did
> you double-check 
> > that you applied the required settings correctly?
> >
> > If that doesn't do it, post the error messages. 
> We can't guess.
> >
> 
> -- 
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> 

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