wxWidgets/include/wx/meta/convertible.h
Vadim Zeitlin 3f66f6a5b3 Remove all lines containing cvs/svn "$Id$" keyword.
This keyword is not expanded by Git which means it's not replaced with the
correct revision value in the releases made using git-based scripts and it's
confusing to have lines with unexpanded "$Id$" in the released files. As
expanding them with Git is not that simple (it could be done with git archive
and export-subst attribute) and there are not many benefits in having them in
the first place, just remove all these lines.

If nothing else, this will make an eventual transition to Git simpler.

Closes #14487.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74602 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2013-07-26 16:02:46 +00:00

39 lines
1022 B
C++

/////////////////////////////////////////////////////////////////////////////
// Name: wx/meta/convertible.h
// Purpose: Test if types are convertible
// Author: Arne Steinarson
// Created: 2008-01-10
// Copyright: (c) 2008 Arne Steinarson
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_META_CONVERTIBLE_H_
#define _WX_META_CONVERTIBLE_H_
//
// Introduce an extra class to make this header compilable with g++3.2
//
template <class D, class B>
struct wxConvertibleTo_SizeHelper
{
static char Match(B* pb);
static int Match(...);
};
// 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
{
enum
{
value =
sizeof(wxConvertibleTo_SizeHelper<D,B>::Match(static_cast<D*>(NULL)))
==
sizeof(char)
};
};
#endif // _WX_META_CONVERTIBLE_H_