cComPtr.h

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//
//
#ifndef _INC_cComPtr_H
#define _INC_cComPtr_H
#ifndef NO_PRAGMA_ONCE
#pragma once
#endif
 
#include "cComInit.h"
#include "GrayCore/include/cIUnkPtr.h"
 
namespace GrayLib
{
        template<class _TYPE = IUnknown>
        class cComPtr : public cIUnkPtr < _TYPE >
        {
 
        public:
                typedef _TYPE TYPE_t;
 
#if defined(_WIN32) && ! defined(__ATLCOMCLI_H__) && defined(_MSC_VER)
                HRESULT CoCreateInstance(REFCLSID rclsid, IUnknown* pUnkOuter = nullptr, DWORD dwClsContext = CLSCTX_ALL)
                {
                        ASSERT(m_p == nullptr);
                        ASSERT(cComInit::sm_nInitCalls);
                        return ::CoCreateInstance(rclsid, pUnkOuter, dwClsContext, __uuidof(_TYPE), get_PPtrV());
                }
                bool IsEqualObject(IUnknown* pOther)
                {
                        if (m_p == nullptr)
                                return(pOther == nullptr);
                        if (pOther == nullptr)
                                return(m_p == nullptr); // One is nullptr the other is not or They are both nullptr objects
 
                        cComPtr<IUnknown> punk1;
                        punk1.SetQI(m_p, __uuidof(IUnknown));
                        cComPtr<IUnknown> punk2;
                        punk2.SetQI(pOther, __uuidof(IUnknown));
                        return punk1 == punk2;
                }
                template <class _TYPEQ>
                HRESULT QueryInterface(_TYPEQ** pp) const
                {
                        ASSERT(pp != nullptr);
                        return m_p->QueryInterface(__uuidof(_TYPEQ), (void**)pp);
                }
#endif
        };
};
 
#endif