OPtr< I > Class Template Reference

OPtr - "owning" smart pointer used for newly created FObjects. More...

#include <smartpointer.h>

Inheritance diagram for OPtr< I >:

Public Member Functions
	OPtr (I *p)
	OPtr (const IPtr< I > &p)
	OPtr (const OPtr< I > &p)
	OPtr ()
I *	operator= (I *_ptr)
Public Member Functions inherited from IPtr< I >
	IPtr (I *ptr, bool addRef=true)
	IPtr (const IPtr &)
template<class T >
	IPtr (const IPtr< T > &other)
	IPtr ()
	~IPtr ()
I *	operator= (I *ptr)
IPtr &	operator= (const IPtr &other)
template<class T >
IPtr &	operator= (const IPtr< T > &other)
	operator I * () const
I *	operator-> () const
I *	get () const
void	reset (I *obj=nullptr)
I *	take () SMTG_NOEXCEPT
template<class I >
	IPtr (const IPtr< I > &other)
template<class I >
IPtr< I > &	operator= (const IPtr< I > &_ptr)

Additional Inherited Members
Static Public Member Functions inherited from IPtr< I >
template<typename T >
static IPtr< T >	adopt (T *obj) SMTG_NOEXCEPT
Protected Attributes inherited from IPtr< I >
I *	ptr

Detailed Description

template<class I>
class Steinberg::OPtr< I >

OPtr - "owning" smart pointer used for newly created FObjects.

FUnknown implementations are supposed to have a refCount of 1 right after creation. So using an IPtr on newly created objects would lead to a leak. Instead the OPtr can be used in this case.
Example:

OPtr<IPath> path = FHostCreate (IPath, hostClasses);
// no release is needed...

The assignment operator takes ownership of a new object and releases the old. So its safe to write:

OPtr<IPath> path = FHostCreate (IPath, hostClasses);
path = FHostCreate (IPath, hostClasses);
path = 0;

This is the difference to using an IPtr with addRef=false.

// DONT DO THIS:
IPtr<IPath> path (FHostCreate (IPath, hostClasses), false);
path = FHostCreate (IPath, hostClasses);
path = 0;

This will lead to a leak!

Constructor & Destructor Documentation

OPtr ( I *  p )

inline

OPtr ( const IPtr< I > &  p )

inline

OPtr ( const OPtr< I > &  p )

inline

OPtr ( )

inline

Member Function Documentation

I* operator= ( I *  _ptr )

inline