I am glad to found Achieve More Reliable Resource Management with Our Custom C++ Classes, but when using it in a unit test project, I got weird compile error. The error points to line 238 of scoped_any.h

DECLARE_SMART_ANY_TYPEDEFS(scoped) and according to other error message it claims “close_rpc_binding” is not valid. After struggling it turned out to be confliction between ATL and MFC. In an ATL project the source file compiled successfully, but in its corresponding unit test project I have to use MFC because CPPUNIT MFCTestRunner is used to produce GUI. At last the problem was solved by moving MFC related headers from stdafx.h to where they are actually required, and disable precompiled header.

There is also a post(Automate Resource Management with shared_ptr) demonstrating resource management via custom deleter and boost::shared_ptr.

Once I have to integrate a MFC GUI application into a console application. The MFC has a global "theApp" object, but I also want to change something before its ctor was called, so I moved "theApp" from global to local scope, but ctor of CMainFrame reproted error. The trick is to call AfxWinInit after declaring theApp object.

{
    CMyApp::QUEUE_LENGTH = queue_length;
    CMyApp theApp; // don't use global instance so that I can pass options to it
    // Need to init MFC again to set theApp in correct state
    if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0))
    {
        std::cout << "Fatal Error: MFC initialization failed" << std::endl;
        return -1;
    }
    theApp.InitInstance();
    return theApp.Run();
}

#include "stdafx.h"
#using < system.management.dll>
using namespace System;
using namespace System::Management; 
int main(array<System::String ^> ^args)
{
    Console::WriteLine(L"Query processor count via CLI by Onega");
    ConnectionOptions^ options = gcnew ConnectionOptions();
    //options->Password = L"";
    //options->Username = L"";
    //options->Authority = "NTLMDomain:" ;
    options->Impersonation = ImpersonationLevel::Impersonate;
    ManagementScope^ scope = gcnew ManagementScope("\\\\localhost\\root\\CIMV2",options);
    SelectQuery^ processorquery = gcnew SelectQuery("SELECT * FROM WIN32_Processor ");
    ManagementObjectSearcher^ query = gcnew ManagementObjectSearcher(scope, processorquery);
    ManagementObjectCollection^ resultcollection = query->Get();
    ManagementObjectCollection::ManagementObjectEnumerator^ enu = resultcollection->GetEnumerator();
    int processor_count = 0;
    while(enu->MoveNext())
    {
        Console::WriteLine(enu->Current->ToString());
        processor_count++;
    }
    Console::WriteLine(L"Processor count:{0}", processor_count);
    return 0;
}

It depends on proxy settings of IE, but does not understand pac (proxy automatic configuration file) settings.