File size: 2,922 Bytes
18a519f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 | #pragma once
namespace win
{
template<typename T>
class ComPtr;
template<typename T>
class ComPtrRef
{
private:
ComPtr<T>& m_ComPtr;
ComPtrRef(ComPtr<T>& comPtr) :
m_ComPtr(comPtr)
{
}
friend class ComPtr<T>;
public:
inline operator T**()
{
return m_ComPtr.ReleaseAndGetAddressOf();
}
inline operator void**()
{
return reinterpret_cast<void**>(m_ComPtr.ReleaseAndGetAddressOf());
}
inline T* operator*() throw ()
{
return m_ComPtr;
}
};
template<typename T>
class ComPtr
{
private:
T *ptr;
public:
inline ComPtr(void) : ptr(NULL) {}
inline ~ComPtr(void) { this->Free(); }
ComPtr(T *ptr)
{
if (NULL != (this->ptr = ptr))
{
this->ptr->AddRef();
}
}
ComPtr(const ComPtr &ptr)
{
if (NULL != (this->ptr = ptr.ptr))
{
this->ptr->AddRef();
}
}
inline bool operator!() const
{
return (NULL == this->ptr);
}
inline operator T*() const { return this->ptr; }
inline T *operator->() const
{
//_assert(NULL != this->ptr);
return this->ptr;
}
inline T &operator*()
{
//_assert(NULL != this->ptr);
return *this->ptr;
}
inline ComPtrRef<T> operator&()
{
return ComPtrRef<T>(*this);
}
const ComPtr &operator=(T *ptr)
{
if (this->ptr != ptr)
{
this->Free();
if (NULL != (this->ptr = ptr))
{
this->ptr->AddRef();
}
}
return *this;
}
const ComPtr &operator=(const ComPtr &ptr)
{
if (this->ptr != ptr.ptr)
{
this->Free();
if (NULL != (this->ptr = ptr.ptr))
{
this->ptr->AddRef();
}
}
return *this;
}
void Free(void)
{
if (NULL != this->ptr)
{
this->ptr->Release();
this->ptr = NULL;
}
}
inline T** ReleaseAndGetAddressOf()
{
Free();
return &ptr;
}
template<typename U>
inline HRESULT As(ComPtrRef<U> p) const throw ()
{
return ptr->QueryInterface(__uuidof(U), p);
}
inline bool operator==(std::nullptr_t) const
{
return this->ptr == nullptr;
}
template<typename U>
inline bool operator==(U* other)
{
if (ptr == nullptr || other == nullptr)
return ptr == other;
ComPtr<IUnknown> meUnknown;
ComPtr<IUnknown> otherUnknown;
if (FAILED(this->ptr->QueryInterface(__uuidof(IUnknown), &meUnknown)))
return false;
if (FAILED(other->QueryInterface(__uuidof(IUnknown), &otherUnknown)))
return false;
return static_cast<IUnknown*>(meUnknown) == static_cast<IUnknown*>(otherUnknown);
}
template<typename U>
inline bool operator==(ComPtr<U>& other)
{
return *this == static_cast<U*>(other);
}
inline bool operator!=(std::nullptr_t) const
{
return this->ptr != nullptr;
}
template<typename U>
inline bool operator!=(U* other)
{
return !(*this == other);
}
template<typename U>
inline bool operator!=(ComPtr<U>& other)
{
return *this != static_cast<U*>(other);
}
};
}
|