windows-nt/Source/XPSP1/NT/base/win32/fusion/appweek/inc/sxapwcomptr.h

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2020-09-26 03:20:57 -05:00
#pragma once
#include "atlbase.h"
template <typename T> class CSxApwComPtr;
/* like what FusionHandle does */
template <typename T>
class CSmartPointerPointerOrDumbPointerPointerOrVoidPointerPointer
{
public:
CSmartPointerPointerOrDumbPointerPointerOrVoidPointerPointer(CSxApwComPtr<T>* p) : m(p) { }
operator CSxApwComPtr<T>*() { return m; }
operator T**() { return &(*m).p; }
operator void**() { return reinterpret_cast<void**>(operator T**()); }
CSxApwComPtr<T>* m;
};
template <typename T>
class CSxApwComPtr : public ATL::CComQIPtr<T>
{
private:
typedef ATL::CComQIPtr<T> Base;
public:
~CSxApwComPtr() { }
CSxApwComPtr(const CSxApwComPtr& that) : Base(that) { }
CSxApwComPtr(T* pt = NULL) : Base(pt) { }
void operator=(T* pt) { Base::operator=(pt); }
CSxApwComPtr(IUnknown* pt) : Base(pt) { }
void operator=(IUnknown* pt) { Base::operator=(pt); }
T* operator->() const { return Base::operator->(); }
CSmartPointerPointerOrDumbPointerPointerOrVoidPointerPointer<T> operator&()
{
return CSmartPointerPointerOrDumbPointerPointerOrVoidPointerPointer<T>(this);
}
};
//Specialization to make it work
template<>
class CSxApwComPtr<IUnknown> : public ATL::CComQIPtr<IUnknown, &IID_IUnknown>
{
private:
typedef T IUnknown;
typedef ATL::CComQIPtr<IUnknown, &IID_IUnknown> Base;
public:
~CSxApwComPtr() { }
CSxApwComPtr(const CSxApwComPtr& that) : Base(that) { }
CSxApwComPtr(T* pt = NULL) : Base(pt) { }
void operator=(T* pt) { Base::operator=(pt); }
T* operator->() const { return Base::operator->(); }
CSmartPointerPointerOrDumbPointerPointerOrVoidPointerPointer<T> operator&()
{
return CSmartPointerPointerOrDumbPointerPointerOrVoidPointerPointer<T>(this);
}
};