27 lines
798 B
C
27 lines
798 B
C
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
// Name: wx/meta/convertible.h
|
||
|
|
// Purpose: Test if types are convertible
|
||
|
|
// Author: Arne Steinarson
|
||
|
|
// Created: 2008-01-10
|
||
|
|
// RCS-ID: $Id$
|
||
|
|
// Copyright: (c) 2008 Arne Steinarson
|
||
|
|
// Licence: wxWindows licence
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
#ifndef _WX_CONVERTIBLE_H_
|
||
|
|
#define _WX_CONVERTIBLE_H_
|
||
|
|
|
||
|
|
// Helper to decide if an object of type D is convertible to type B (the test
|
||
|
|
// succeeds in particular when D derives from B)
|
||
|
|
template <class D, class B>
|
||
|
|
struct wxConvertibleTo
|
||
|
|
{
|
||
|
|
static char Match(B* pb);
|
||
|
|
static int Match(...);
|
||
|
|
|
||
|
|
enum { value = sizeof(Match(static_cast<D*>(NULL))) == sizeof(char) };
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif // _WX_CONVERTIBLE_H_
|
||
|
|
|