37 lines
1.1 KiB
C++
37 lines
1.1 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/meta/convertible.h
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// Purpose: Test if types are convertible
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// Author: Arne Steinarson
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// Created: 2008-01-10
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// Copyright: (c) 2008 Arne Steinarson
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_META_CONVERTIBLE_H_
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#define _WX_META_CONVERTIBLE_H_
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#include <type_traits>
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// NOTE: this class is obsolete and provided only for compatibility, please use
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// the standard class instead.
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//
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// Helper to decide if an object of type D is convertible to type B (the test
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// succeeds in particular when D derives from B)
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template <class D, class B>
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using wxConvertibleTo = std::is_convertible<D*, B*>;
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// This is similar to wxConvertibleTo, except that the case of D deriving from
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// B non-publicly will be detected and the correct value (false) will be
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// deduced.
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template <class D, class B>
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struct wxIsPubliclyDerived
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{
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enum
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{
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value = std::is_base_of<B, D>::value && std::is_convertible<D*, B*>::value
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};
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};
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#endif // _WX_META_CONVERTIBLE_H_
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