c80d4c1e20
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74774 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: interface/wx/windowptr.h
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// Purpose: wxWindowPtr<T> class documentation.
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// Author: Vaclav Slavik
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// Created: 2013-09-02
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// Copyright: (c) 2013 Vaclav Slavik <vslavik@fastmail.fm>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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/**
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A reference-counted smart pointer for holding wxWindow instances.
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This specialization of wxSharedPtr<T> is useful for holding
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wxWindow-derived objects. Unlike wxSharedPtr<T> or @c std::shared_ptr<>, it
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doesn't use the delete operator to destroy the value when reference count
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drops to zero, but calls wxWindow::Destroy() to safely destroy the window.
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The template parameter T must be wxWindow or a class derived from it.
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@library{wxcore}
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@category{smartpointers}
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@since 3.0
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@see wxSharedPtr<T>
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*/
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template<typename T>
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class wxWindowPtr<T> : public wxSharedPtr<T>
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{
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public:
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/// Default constructor.
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wxWindowPtr();
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/**
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Constructor.
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Creates shared pointer from the raw pointer @a ptr and takes ownership
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of it.
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*/
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explicit wxWindowPtr(T* ptr);
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/**
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Constructor.
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Creates shared pointer from the raw pointer @a ptr and deleter @a d
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and takes ownership of it.
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@param ptr The raw pointer.
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@param d Deleter - a functor that is called instead of delete to
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free the @a ptr raw pointer when its reference count drops to
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zero.
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*/
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template<typename Deleter>
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explicit wxWindowPtr(T* ptr, Deleter d);
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/// Copy constructor.
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wxWindowPtr(const wxWindowPtr<T>& tocopy);
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/**
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Assignment operator.
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Releases any previously held pointer and creates a reference to @a ptr.
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*/
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wxWindowPtr<T>& operator=(T* ptr);
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/**
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Assignment operator.
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Releases any previously held pointer and creates a reference to the
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same object as @a topcopy.
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*/
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wxWindowPtr<T>& operator=(const wxWindowPtr<T>& tocopy);
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/**
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Reset pointer to @a ptr.
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If the reference count of the previously owned pointer was 1 it will be deleted.
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*/
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void reset(T* ptr = NULL);
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};
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