DotNet Visual C: identifier not found error, undeclared identifier

• aarthi28_gmail_com / 206 / Sun, 31 Jan 2010 07:21:00 GMT / Comments (3)
• Hi,
  I have this code that I am trying to compile, but I am getting the
  following errors

  'CoInitializeSecurity': identifier not found
  'EOAC_NONE' : undeclared identifier

  I have pasted the code below

  // Using_WMI1.cpp : Defines the entry point for the console
  application.
  //

  #include "stdafx.h"
  #include "wbemidl.h"
  #include <comdef.h>

  #ifdef _DEBUG
  #define new DEBUG_NEW
  #undef THIS_FILE
  static char THIS_FILE[] = __FILE__;
  #endif

  void OnButtonGetinfo()
  {
  // TODO: Add your control notification handler code here
  CoInitialize(NULL);

  //Security needs to be initialized in XP first and this was the major
  problem
  //why it was not working in XP.

  if(CoInitializeSecurity( NULL,
  -1,
  NULL,
  NULL,
  RPC_C_AUTHN_LEVEL_PKT,
  RPC_C_IMP_LEVEL_IMPERSONATE,
  NULL,
  EOAC_NONE,
  0)
  != S_OK)
  return;

  IWbemLocator * pIWbemLocator = NULL;
  IWbemServices * pWbemServices = NULL;
  IEnumWbemClassObject * pEnumObject = NULL;

  BSTR bstrNamespace = (L"root\\cimv2");

  if(CoCreateInstance (
  CLSID_WbemAdministrativeLocator,
  NULL ,
  CLSCTX_INPROC_SERVER | CLSCTX_LOCAL_SERVER ,
  IID_IUnknown ,
  ( void ** ) & pIWbemLocator
  ) != S_OK)
  return;

  if(pIWbemLocator->ConnectServer(
  bstrNamespace, // Namespace
  NULL, // Userid
  NULL, // PW
  NULL, // Locale
  0, // flags
  NULL, // Authority
  NULL, // Context
  &pWbemServices
  ) != S_OK)
  return;

  HRESULT hRes;
  // BSTR strQuery = (L"Select * from win32_Processor");
  BSTR strQuery = (L"SELECT * FROM Win32_OperatingSystem");
  //BSTR strQuery = (L"SELECT Name, ProcessId, Caption, ExecutablePath"
  FROM Win32_Process");

  //BSTR strQuery = (L"SELECT * FROM Win32_Process");

  BSTR strQL = (L"WQL");
  hRes = pWbemServices-

  Quote: Originally Posted by >ExecQuery(strQL,strQuery,WBEM_FLAG_RETURN_IMMEDIAT ELY,NULL,&pEnumObject);

  
  if(hRes != S_OK)
  {
  printf("Could not execute Query");
  return;
  }

  ULONG uCount = 1, uReturned;
  IWbemClassObject * pClassObject = NULL;

  hRes = pEnumObject->Reset();

  if(hRes != S_OK)
  {
  printf("Could not Enumerate");
  return;
  }

  hRes = pEnumObject->Next(WBEM_INFINITE,uCount, &pClassObject,
  &uReturned);
  if(hRes != S_OK)
  {
  printf("Could not Enumerate");
  return;
  }

  VARIANT v1;
  BSTR strClassProp = SysAllocString(L"NumberOfProcesses");
  hRes = pClassObject->Get(strClassProp, 0, &v1, 0, 0);

  if(hRes != S_OK)
  {
  printf("Could not Get Value");
  return;
  }

  SysFreeString(strClassProp);

  _bstr_t bstrPath = &v1; //Just to convert BSTR to ANSI
  char* strPath=(char*)bstrPath;

  if (SUCCEEDED(hRes))
  printf(strPath);
  else
  printf("Error in getting object");

  VariantClear( &v1 );

  pIWbemLocator->Release();
  pWbemServices->Release();
  pEnumObject->Release();
  pClassObject->Release();
  CoUninitialize();

  }
  int _tmain(int argc, _TCHAR* argv[])
  {
  OnButtonGetinfo();
  return 0;
  }

  Any help I can get will be appreciated. Thanks
• Keywords:

  identifier, error, undeclared, dotnet, visual, .net

• http://dotnet.itags.org/visual-c/71211/«« Last Thread - Next Thread »»

• 1. aarthi28...gmail.com wrote:

     Quote: Originally Posted by Hi, I have this code that I am trying to compile, but I am getting the following errors > 'CoInitializeSecurity': identifier not found 'EOAC_NONE' : undeclared identifier > I have pasted the code below > // Using_WMI1.cpp : Defines the entry point for the console application. // >

     
     This is a little off topic on comp.lang.c++.

     --
     Ian Collins.

     iancollins | Fri, 04 Jan 2008 12:33:00 GMT |

  2. * aarthi28...gmail.com:

     Quote: Originally Posted by Hi,

     
     Hi.

     PLEASE DON'T CROSSPOST TO ENVIRONMENT-SPECIFIC GROUPS AND CLC++.

     Follow-ups set for pure C++ responses.

     Quote: Originally Posted by I have this code that I am trying to compile, but I am getting the following errors > 'CoInitializeSecurity': identifier not found

     
     This means you haven't declared that identifier, most probably you've
     forgotten to include some header.

     Quote: Originally Posted by 'EOAC_NONE' : undeclared identifier

     
     Ditto.

     Quote: Originally Posted by I have pasted the code below > // Using_WMI1.cpp : Defines the entry point for the console application. // > #include "stdafx.h" #include "wbemidl.h" #include <comdef.h>

     
     None of these are standard C++ headers. Most probably the intention is
     that "stdafx.h" should drag in the headers you're missing. Update that
     file to include the relevant headers (it's also a good idea to turn off
     precompiled header support for your project -- the vendor-specific
     variant you're using confuses novices endlessly, allows incorrect code
     to compile, and sometimes means correct code doesn't compile).

     Quote: Originally Posted by #ifdef _DEBUG #define new DEBUG_NEW

     
     Redefining a C++ keyword means your code has undefined behavior if it
     uses anything from the standard library. And since it apparently uses
     'new'...

     Quote: Originally Posted by #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif > > > void OnButtonGetinfo() { // TODO: Add your control notification handler code here CoInitialize(NULL);

     
     Although environment-specific, this is a library initialization call.
     It's generally unsafe to initialize libraries later than the start of
     'main'. In particular, experience with this library is that late
     initialization is extremely unsafe -- don't do it.

     [snip]
     

     Quote: Originally Posted by int _tmain(int argc, _TCHAR* argv[])

     
     This is not a standard C++ startup function.

     Moreover it's braindead even for this program's intended environment.

     Use standard 'main'.

     Quote: Originally Posted by Any help I can get will be appreciated. Thanks

     
     You're welcome.

     Cheers,

     - Alf

     --
     A: Because it messes up the order in which people normally read text.
     Q: Why is it such a bad thing?
     A: Top-posting.
     Q: What is the most annoying thing on usenet and in e-mail?

     alfp_steinbach | Fri, 04 Jan 2008 12:34:00 GMT |

  3. On 26 Feb, 00:28, aarth......gmail.com wrote:

     Quote: Originally Posted by Hi, I have this code that I am trying to compile, but I am getting the following errors > 'CoInitializeSecurity': identifier not found 'EOAC_NONE' : undeclared identifier

     
     A search on the VC subdirectories finds it in objidl.h, but you should

     #include <objbase.h>

     as is stated in the Requirements section of the MSDN description of
     CoInitializeSecurity.

     Chris

     chris_doran_postmaster_co_uk | Fri, 04 Jan 2008 12:35:00 GMT |