CComPtr

CComPtr

 

#include "stdafx.h"

#include <atlcomcli.h>

 

#import "..\..\SimonATLSample\SimonATLSample\Debug\SimonATLSample.tlb" named_guids

 

#include "Debug\SimonATLSample.tlh" //This is the generated tlh file by the imported tlb above

 

 

using namespace SimonATLSampleLib;

 

int _tmain(int argc, _TCHAR* argv[])

{

    HRESULT hr;

 

    hr = CoInitialize(NULL);

 

    //{ Notice!!! This bracket makes sure that the smart pointer destructor happens before CoUnitialize(), this is very important.

    //CComPtr<ISimonMathUtil> pSimonMathUtil = NULL;

    //hr = pSimonMathUtil.CoCreateInstance(__uuidof(SimonMathUtil), NULL);

 

    //ISimonMathUtil *pISimonMathUtilAnother;

    //hr = pSimonMathUtil.QueryInterface(&pISimonMathUtilAnother);

 

    //long retVal;

    //pSimonMathUtil->Add(1, 2, &retVal);

    // }

 

    // Above one is equal to the one below

 

    ISimonMathUtil *pISimonMathUtil;

    if(SUCCEEDED(hr))

    {

        hr = CoCreateInstance(__uuidof(SimonMathUtil), NULL, CLSCTX_INPROC_SERVER, /*IID_IKegleTest*/__uuidof(ISimonMathUtil), (void**)&pISimonMathUtil);

        if(SUCCEEDED(hr))

        {

            ISimonMathUtil *pISimonMathUtilAnother;

            hr = pISimonMathUtil->QueryInterface(__uuidof(ISimonMathUtil), (void**)&pISimonMathUtilAnother);

 

            long retVal;

            hr = pISimonMathUtilAnother->Add(1, 2, &retVal);           

        }

    }

 

    CoUninitialize();

 

    return 0;

}