Windows Form application and "#include <stdlib.h>"

Hello experts,

I want to add #include <stdlib.h> to my windows form application.

I get lots of errors:

c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(234) : error C3083: 'vc_attributes': the symbol to the left of a '::' must be a type
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(234) : error C2039: 'YesNoMaybe' : is not a member of '`global namespace''
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(234) : error C2146: syntax error : missing ';' before identifier 'SA_YesNoMaybe'
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(234) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(234) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(235) : error C3083: 'vc_attributes': the symbol to the left of a '::' must be a type


Why is that?

Thank you

panJames

panJamesAsked:
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evilrixConnect With a Mentor Senior Software Engineer (Avast)Commented:
Ok, well it looks like you are trying to mix managed and unmanaged code, which isn't an issue as long as you are aware of this but your includes shouldn't be inside a namespace otherwise you are importing everything included by that include into that namespace. Here all the stuff in stdlib is going to be imported into the OpenCVtester namespace. Try the following:

NB. I would also avoid a single header containing all other headers (which I guess Headers.h is) - it can cause some hard to diagnose dependency issues. Only include in each translation unit what is needed by that translation unit.
#pragma once

#include <cstdlib>
#include "Headers.h"

namespace OpenCVtester {

      using namespace System;
      using namespace System::ComponentModel;
      using namespace System::Collections;
      using namespace System::Windows::Forms;
      using namespace System::Data;
      using namespace System::Drawing;

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evilrixSenior Software Engineer (Avast)Commented:
That header is deprecated, you should use "#include <cstdlib>"
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panJamesAuthor Commented:
Ok, added it.
This is how the beginning of my file looks like:

#pragma once


namespace OpenCVtester {

      using namespace System;
      using namespace System::ComponentModel;
      using namespace System::Collections;
      using namespace System::Windows::Forms;
      using namespace System::Data;
      using namespace System::Drawing;

      #include <cstdlib>
      #include "Headers.h"

And I get errors like:
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(234) : error C3083: 'vc_attributes': the symbol to the left of a '::' must be a type
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(234) : error C2039: 'YesNoMaybe' : is not a member of '`global namespace''
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(234) : error C2146: syntax error : missing ';' before identifier 'SA_YesNoMaybe'
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(234) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(234) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(235) : error C3083: 'vc_attributes': the symbol to the left of a '::' must be a type
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(235) : error C2039: 'YesNoMaybe' : is not a member of '`global namespace''
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(235) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(235) : error C2146: syntax error : missing ';' before identifier 'SA_Yes'
c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(235) : error C2377: 'OpenCVtester::YesNoMaybe' : redefinition; typedef cannot be overloaded with any other symbol
        c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(234) : see declaration of 'OpenCVtester::YesNoMaybe'



panJames
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