623 lines
18 KiB
C
623 lines
18 KiB
C
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/*****************************************************************************
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*
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* (C) COPYRIGHT MICROSOFT CORPORATION, 2000
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*
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* TITLE: gensph.h
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*
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* VERSION: 1.0
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*
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* AUTHOR: LazarI
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*
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* DATE: 23-Dec-2000
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*
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* DESCRIPTION: generic smart pointers & smart handles templates
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*
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*****************************************************************************/
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#ifndef _GENSPH_H_
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#define _GENSPH_H_
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// include the core definitions first
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#include "coredefs.h"
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////////////////////////////////////////////////
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//
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// class CGenericSP
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//
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// a generic smart pointer
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// everything starts here -:)
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//
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template < class T,
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class inheritorClass,
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class pType = T*,
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INT_PTR null = 0,
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class pCType = const T* >
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class CGenericSP
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{
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public:
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// construction/destruction
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CGenericSP(): m_p(GetNull()) {}
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CGenericSP(pType p): m_p(GetNull()) { _Attach(p); }
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~CGenericSP() { Reset(); }
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// follows common smart pointer impl. -
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// operators & methods
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void Reset()
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{
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if( GetNull() != m_p )
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{
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_Delete(m_p);
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m_p = GetNull();
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}
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}
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void Attach(pType p)
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{
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Reset();
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m_p = (p ? p : GetNull());
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}
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pType Detach()
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{
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pType p = GetNull();
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if( GetNull() != m_p )
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{
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p = m_p;
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m_p = GetNull();
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}
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return p;
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}
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template <class AS_TYPE>
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AS_TYPE GetPtrAs() const
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{
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return (GetNull() == m_p) ? reinterpret_cast<AS_TYPE>(NULL) : reinterpret_cast<AS_TYPE>(m_p);
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}
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pType GetPtr() const
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{
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return GetPtrAs<pType>();
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}
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pType* GetPPT()
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{
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return static_cast<pType*>(&m_p);
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}
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pCType* GetPPCT()
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{
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return const_cast<pCType*>(&m_p);
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}
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void** GetPPV()
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{
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return reinterpret_cast<void**>(&m_p);
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}
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operator pType() const
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{
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return GetPtr();
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}
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T& operator*() const
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{
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ASSERT(GetNull() != m_p);
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return *m_p;
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}
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pType* operator&()
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{
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ASSERT(GetNull() == m_p);
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return GetPPT();
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}
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pType operator->() const
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{
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ASSERT(GetNull() != m_p);
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return (pType)m_p;
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}
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pType operator=(pType p)
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{
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_Attach(p);
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return m_p;
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}
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pType operator=(const int i)
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{
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// this operator is only for NULL assignment
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ASSERT(INT2PTR(i, pType) == NULL || INT2PTR(i, pType) == GetNull());
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Attach(INT2PTR(i, pType));
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return m_p;
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}
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bool operator!() const
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{
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return (GetNull() == m_p);
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}
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bool operator<(pType p) const
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{
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return (m_p < p);
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}
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bool operator==(pType p) const
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{
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return (m_p == p);
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}
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protected:
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pType m_p;
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// those will be declared protected, so people won't use them directly
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CGenericSP(CGenericSP<T, inheritorClass, pType, null, pCType> &sp): m_p(GetNull())
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{
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_Attach(sp);
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}
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void Attach(CGenericSP<T, inheritorClass, pType, null, pCType> &sp)
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{
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static_cast<inheritorClass*>(this)->Attach(static_cast<pType>(sp));
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sp.Detach();
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}
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pType operator=(CGenericSP<T, inheritorClass, pType, null, pCType> &sp)
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{
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_Attach(sp);
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return m_p;
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}
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// NULL support, use these to check for/assign NULL in inheritors
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pType GetNull() const { return reinterpret_cast<pType>(null); }
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bool IsNull(pType p) const { return GetNull() == p; }
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bool IsntNull(pType p) const { return GetNull() != p; }
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private:
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void _Attach(pType p)
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{
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// give a chance to inheritors to override the attach
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static_cast<inheritorClass*>(this)->Attach(p);
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}
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void _Attach(CGenericSP<T, inheritorClass, pType, null, pCType> &sp)
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{
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// give a chance to inheritors to override the attach
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static_cast<inheritorClass*>(this)->Attach(sp);
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}
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void _Delete(pType p)
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{
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// the inheritor class defines static member called Delete(pType p)
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// to destroy the object.
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if( GetNull() != p )
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{
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inheritorClass::Delete(p);
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}
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}
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};
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// declares standard default contructor, copy constructor, attach
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// contructor and assignment operators (they can't be inherited as constructors can't)
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// for the CGenericSP class in an inheritor class.
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#define DECLARE_GENERICSMARTPTR_CONSTRUCT(T, className) \
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private: \
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className(className &sp): CGenericSP< T, className >(sp) { } \
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T* operator=(className &sp) \
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{ return CGenericSP< T, className >::operator =(sp); } \
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public: \
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className() { } \
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className(T *p): CGenericSP< T, className >(p) { } \
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T* operator=(T *p) \
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{ return CGenericSP< T, className >::operator =(p); } \
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T* operator=(const int i) \
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{ return CGenericSP< T, className >::operator =(i); } \
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#define DECLARE_GENERICSMARTPTR_CONSTRUCT1(T, className, pType) \
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private: \
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className(className &sp): CGenericSP<T, className, pType>(sp) { } \
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pType operator=(className &sp) \
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{ return CGenericSP<T, className, pType>::operator =(sp); } \
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public: \
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className() { } \
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className(pType p): CGenericSP<T, className, pType>(p) { } \
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pType operator=(pType p) \
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{ return CGenericSP<T, className, pType>::operator =(p); } \
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pType operator=(const int i) \
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{ return CGenericSP<T, className, pType>::operator =(i); } \
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#define DECLARE_GENERICSMARTPTR_CONSTRUCT2(T, className, pType, null) \
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private: \
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className(className &sp): CGenericSP<T, className, pType, null>(sp) { } \
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pType operator=(className &sp) \
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{ return CGenericSP<T, className, pType, null>::operator =(sp); } \
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public: \
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className() { } \
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className(pType p): CGenericSP<T, className, pType, null>(p) { } \
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pType operator=(pType p) \
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{ return CGenericSP<T, className, pType, null>::operator =(p); } \
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pType operator=(const int i) \
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{ return CGenericSP<T, className, pType, null>::operator =(i); } \
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////////////////////////////////////////////////
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////////// AUTO POINTERS ///////////////////////
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////////////////////////////////////////////////
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////////////////////////////////////////////////
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//
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// class CAutoPtr
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//
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// simple auto-pointer
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// uses delete operator to free memory
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//
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template <class T>
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class CAutoPtr: public CGenericSP< T, CAutoPtr<T> >
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{
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public:
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DECLARE_GENERICSMARTPTR_CONSTRUCT(T, CAutoPtr<T>)
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static void Delete(T *p) { delete p; }
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};
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////////////////////////////////////////////////
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//
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// class CAutoPtrArray
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//
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// simple auto-pointer allocated as array
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// uses delete[] operator to free memory
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//
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template <class T>
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class CAutoPtrArray: public CGenericSP< T, CAutoPtrArray<T> >
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{
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public:
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DECLARE_GENERICSMARTPTR_CONSTRUCT(T, CAutoPtrArray<T>)
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static void Delete(T *p) { delete[] p; }
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};
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////////////////////////////////////////////////
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//
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// class CAutoPtrCRT
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//
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// simple CRT auto-pointer - allocated with malloc/calloc
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// uses free to free the memory
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//
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template <class T>
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class CAutoPtrCRT: public CGenericSP< T, CAutoPtrCRT<T> >
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{
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public:
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DECLARE_GENERICSMARTPTR_CONSTRUCT(T, CAutoPtrCRT<T>)
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static void Delete(T *p) { free(p); }
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};
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////////////////////////////////////////////////
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//
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// class CAutoPtrSpl
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//
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// simple spooler auto-pointer -
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// uses FreeMem to free memory
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//
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template <class T>
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class CAutoPtrSpl: public CGenericSP< T, CAutoPtrSpl<T> >
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{
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public:
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DECLARE_GENERICSMARTPTR_CONSTRUCT(T, CAutoPtrSpl<T>)
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static void Delete(T *p) { FreeMem(p); }
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};
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////////////////////////////////////////////////
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//
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// class CAutoPtrBSTR
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//
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// simple BSTR auto-pointer -
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// SysAllocString/SysFreeString
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//
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class CAutoPtrBSTR: public CGenericSP<BSTR, CAutoPtrBSTR, BSTR>
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{
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public:
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DECLARE_GENERICSMARTPTR_CONSTRUCT1(BSTR, CAutoPtrBSTR, BSTR)
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static void Delete(BSTR p) { SysFreeString(p); }
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};
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////////////////////////////////////////////////
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//
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// class CAutoPtrCOM
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//
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// simple smart COM pointer
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//
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template <class T>
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class CAutoPtrCOM: public CGenericSP< T, CAutoPtrCOM<T> >
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{
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public:
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DECLARE_GENERICSMARTPTR_CONSTRUCT(T, CAutoPtrCOM<T>)
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static void Delete(T *p) { p->Release(); }
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};
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////////////////////////////////////////////////
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//
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// class CRefPtrCOM
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//
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// referenced smart COM pointer (ATL style)
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// with improvements for robustness
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//
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template <class T>
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class CRefPtrCOM: public CGenericSP< T, CRefPtrCOM<T> >
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{
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void _AddRefAttach(T *p);
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public:
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// special case all these
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CRefPtrCOM() { }
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CRefPtrCOM(const CGenericSP< T, CRefPtrCOM<T> > &sp): CGenericSP< T, CRefPtrCOM<T> >(sp) { }
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T* operator=(const CRefPtrCOM<T> &sp) { return CGenericSP< T, CRefPtrCOM<T> >::operator =(sp); }
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T* operator=(const int i) { return CGenericSP< T, CRefPtrCOM<T> >::operator =(i); }
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// overloaded stuff
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void Attach(const CRefPtrCOM<T> &sp) { _AddRefAttach(static_cast<T*>(sp)); }
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static void Delete(T *p) { p->Release(); }
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// use these functions instead of operators (more clear)
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HRESULT CopyFrom(T *p); // AddRef p and assign to this
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HRESULT CopyTo(T **ppObj); // AddRef this and assign to ppObj
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HRESULT TransferTo(T **ppObj); // assign this to ppObj and assign NULL to this
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HRESULT Adopt(T *p); // take ownership of p
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private:
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// disable contruction, assignment operator & attach from
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||
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// a raw pointer - it's not clear what exactly you want:
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||
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// to copy (AddRef) the object or to take ownership - use
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// the functions above to make clear
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void Attach(T* p);
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CRefPtrCOM(T *p);
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T* operator=(T *p);
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};
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||
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||
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||
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////////////////////////////////////////////////
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||
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//
|
||
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// class CAutoPtrShell
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||
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//
|
||
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// smart shell auto pointer -
|
||
|
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// uses shell IMalloc to free memory
|
||
|
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//
|
||
|
|
template <class T>
|
||
|
|
class CAutoPtrShell: public CGenericSP< T, CAutoPtrShell<T> >
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT(T, CAutoPtrShell<T>)
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||
|
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static void Delete(T *p)
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||
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{
|
||
|
|
CAutoPtrCOM<IMalloc> spShellMalloc;
|
||
|
|
if( SUCCEEDED(SHGetMalloc(&spShellMalloc)) )
|
||
|
|
{
|
||
|
|
spShellMalloc->Free(p);
|
||
|
|
}
|
||
|
|
}
|
||
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};
|
||
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||
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|
////////////////////////////////////////////////
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||
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//
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||
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// class CAutoPtrPIDL
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||
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|
//
|
||
|
|
// smart shell ID list ptr - LPCITEMIDLIST, LPITEMIDLIST.
|
||
|
|
//
|
||
|
|
typedef CAutoPtrShell<ITEMIDLIST> CAutoPtrPIDL;
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
////////// AUTO HANDLES ////////////////////////
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoHandleNT
|
||
|
|
//
|
||
|
|
// NT kernel object handle (closed with CloseHandle)
|
||
|
|
//
|
||
|
|
class CAutoHandleNT: public CGenericSP<HANDLE, CAutoHandleNT, HANDLE>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT1(HANDLE, CAutoHandleNT, HANDLE)
|
||
|
|
static void Delete(HANDLE h) { VERIFY(CloseHandle(h)); }
|
||
|
|
};
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoHandleHLOCAL
|
||
|
|
//
|
||
|
|
// NT local heap handle (closed with LocalFree)
|
||
|
|
//
|
||
|
|
class CAutoHandleHLOCAL: public CGenericSP<HLOCAL, CAutoHandleHLOCAL, HLOCAL>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT1(HLOCAL, CAutoHandleHLOCAL, HLOCAL)
|
||
|
|
static void Delete(HLOCAL h) { VERIFY(NULL == LocalFree(h)); }
|
||
|
|
};
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoHandleHGLOBAL
|
||
|
|
//
|
||
|
|
// NT global heap handle (closed with GlobalFree)
|
||
|
|
//
|
||
|
|
class CAutoHandleHGLOBAL: public CGenericSP<HGLOBAL, CAutoHandleHGLOBAL, HGLOBAL>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT1(HGLOBAL, CAutoHandleHGLOBAL, HGLOBAL)
|
||
|
|
static void Delete(HGLOBAL h) { VERIFY(NULL == GlobalFree(h)); }
|
||
|
|
};
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoHandlePrinter
|
||
|
|
//
|
||
|
|
// auto printer handle
|
||
|
|
//
|
||
|
|
class CAutoHandlePrinter: public CGenericSP<HANDLE, CAutoHandlePrinter, HANDLE>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT1(HANDLE, CAutoHandlePrinter, HANDLE)
|
||
|
|
static void Delete(HANDLE h) { CHECK(ClosePrinter(h)); }
|
||
|
|
};
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoHandlePrinterNotify
|
||
|
|
//
|
||
|
|
// printer notifications handle -
|
||
|
|
// Find[Firse/Next/Close]PrinterChangeNotification()
|
||
|
|
//
|
||
|
|
class CAutoHandlePrinterNotify: public CGenericSP<HANDLE, CAutoHandlePrinterNotify, HANDLE, -1>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT2(HANDLE, CAutoHandlePrinterNotify, HANDLE, -1)
|
||
|
|
static void Delete(HANDLE h) { CHECK(FindClosePrinterChangeNotification(h)); }
|
||
|
|
};
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoPtrPrinterNotify
|
||
|
|
//
|
||
|
|
// printer notifications memory - spooler should free it.
|
||
|
|
// Find[Firse/Next/Close]PrinterChangeNotification()
|
||
|
|
//
|
||
|
|
class CAutoPtrPrinterNotify: public CGenericSP<PRINTER_NOTIFY_INFO, CAutoPtrPrinterNotify>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT(PRINTER_NOTIFY_INFO, CAutoPtrPrinterNotify)
|
||
|
|
static void Delete(PRINTER_NOTIFY_INFO *p) { CHECK(FreePrinterNotifyInfo(p)); }
|
||
|
|
};
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoHandleGDI
|
||
|
|
//
|
||
|
|
// GDI auto handle (WindowsNT GDI handle wrapper)
|
||
|
|
//
|
||
|
|
template <class T>
|
||
|
|
class CAutoHandleGDI: public CGenericSP< T, CAutoHandleGDI<T>, T >
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT1(T, CAutoHandleGDI<T>, T)
|
||
|
|
static void Delete(T hGDIObj) { VERIFY(DeleteObject(hGDIObj)); }
|
||
|
|
};
|
||
|
|
|
||
|
|
// GDI auto handles
|
||
|
|
typedef CAutoHandleGDI<HPEN> CAutoHandlePen;
|
||
|
|
typedef CAutoHandleGDI<HBRUSH> CAutoHandleBrush;
|
||
|
|
typedef CAutoHandleGDI<HFONT> CAutoHandleFont;
|
||
|
|
typedef CAutoHandleGDI<HBITMAP> CAutoHandleBitmap;
|
||
|
|
// etc...
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoHandleCursor
|
||
|
|
//
|
||
|
|
// auto handle for HCURSOR
|
||
|
|
//
|
||
|
|
class CAutoHandleCursor: public CGenericSP<HCURSOR, CAutoHandleCursor, HCURSOR>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT1(HCURSOR, CAutoHandleCursor, HCURSOR)
|
||
|
|
static void Delete(HCURSOR h) { VERIFY(DestroyCursor(h)); }
|
||
|
|
};
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoHandleIcon
|
||
|
|
//
|
||
|
|
// auto handle for HICON
|
||
|
|
//
|
||
|
|
class CAutoHandleIcon: public CGenericSP<HICON, CAutoHandleIcon, HICON>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT1(HICON, CAutoHandleIcon, HICON)
|
||
|
|
static void Delete(HICON h) { VERIFY(DestroyIcon(h)); }
|
||
|
|
};
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoHandleMenu
|
||
|
|
//
|
||
|
|
// auto handle for HMENU
|
||
|
|
//
|
||
|
|
class CAutoHandleMenu: public CGenericSP<HMENU, CAutoHandleMenu, HMENU>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT1(HMENU, CAutoHandleMenu, HMENU)
|
||
|
|
static void Delete(HMENU h) { VERIFY(DestroyMenu(h)); }
|
||
|
|
};
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoHandleAccel
|
||
|
|
//
|
||
|
|
// auto handle for HACCEL
|
||
|
|
//
|
||
|
|
class CAutoHandleAccel: public CGenericSP<HACCEL, CAutoHandleAccel, HACCEL>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT1(HACCEL, CAutoHandleAccel, HACCEL)
|
||
|
|
static void Delete(HACCEL h) { DestroyAcceleratorTable(h); }
|
||
|
|
};
|
||
|
|
|
||
|
|
#ifdef _INC_COMCTRLP
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoHandleHDSA
|
||
|
|
//
|
||
|
|
// auto handle for shell HDSA
|
||
|
|
// (dynamic structure arrays)
|
||
|
|
//
|
||
|
|
class CAutoHandleHDSA: public CGenericSP<HDSA, CAutoHandleHDSA, HDSA>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT1(HDSA, CAutoHandleHDSA, HDSA)
|
||
|
|
static void Delete(HDSA h) { VERIFY(DSA_Destroy(h)); }
|
||
|
|
};
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoHandleMRU
|
||
|
|
//
|
||
|
|
// auto handle for MRU (shell common controls)
|
||
|
|
// CreateMRUList/FreeMRUList
|
||
|
|
//
|
||
|
|
class CAutoHandleMRU: public CGenericSP<HANDLE, CAutoHandleMRU, HANDLE>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT1(HANDLE, CAutoHandleMRU, HANDLE)
|
||
|
|
static void Delete(HANDLE h) { FreeMRUList(h); }
|
||
|
|
};
|
||
|
|
#endif // _INC_COMCTRLP
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoHandleHKEY
|
||
|
|
//
|
||
|
|
// auto handle for a Windows registry key (HKEY)
|
||
|
|
// RegCreateKeyEx/RegOpenKeyEx/RegCloseKey
|
||
|
|
//
|
||
|
|
class CAutoHandleHKEY: public CGenericSP<HKEY, CAutoHandleHKEY, HKEY>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT1(HKEY, CAutoHandleHKEY, HKEY)
|
||
|
|
static void Delete(HKEY h) { VERIFY(ERROR_SUCCESS == RegCloseKey(h)); }
|
||
|
|
};
|
||
|
|
|
||
|
|
////////////////////////////////////////////////
|
||
|
|
//
|
||
|
|
// class CAutoHandleHMODULE
|
||
|
|
//
|
||
|
|
// auto handle for a HMODULE
|
||
|
|
// LoadLibrary/FreeLibrary
|
||
|
|
//
|
||
|
|
class CAutoHandleHMODULE: public CGenericSP<HMODULE, CAutoHandleHMODULE, HMODULE>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
DECLARE_GENERICSMARTPTR_CONSTRUCT1(HMODULE, CAutoHandleHMODULE, HMODULE)
|
||
|
|
static void Delete(HMODULE h) { VERIFY(FreeLibrary(h)); }
|
||
|
|
};
|
||
|
|
|
||
|
|
// include the implementation of the template classes here
|
||
|
|
#include "gensph.inl"
|
||
|
|
|
||
|
|
#endif // endif _GENSPH_H_
|