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 >
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() [1/4]
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inline |
◆ OPtr() [2/4]
◆ OPtr() [3/4]
◆ OPtr() [4/4]
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inline |
Member Function Documentation
◆ operator=()
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inline |