/thirdparty/qxt/qxtweb-standalone/qxtweb/qxtnull.h
http://github.com/tomahawk-player/tomahawk · C Header · 62 lines · 15 code · 8 blank · 39 comment · 0 complexity · b5a97408faddff3ceec7f57580a27ed1 MD5 · raw file
- /****************************************************************************
- **
- ** Copyright (C) Qxt Foundation. Some rights reserved.
- **
- ** This file is part of the QxtCore module of the Qxt library.
- **
- ** This library is free software; you can redistribute it and/or modify it
- ** under the terms of the Common Public License, version 1.0, as published
- ** by IBM, and/or under the terms of the GNU Lesser General Public License,
- ** version 2.1, as published by the Free Software Foundation.
- **
- ** This file is provided "AS IS", without WARRANTIES OR CONDITIONS OF ANY
- ** KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY
- ** WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR
- ** FITNESS FOR A PARTICULAR PURPOSE.
- **
- ** You should have received a copy of the CPL and the LGPL along with this
- ** file. See the LICENSE file and the cpl1.0.txt/lgpl-2.1.txt files
- ** included with the source distribution for more information.
- ** If you did not receive a copy of the licenses, contact the Qxt Foundation.
- **
- ** <http://libqxt.org> <foundation@libqxt.org>
- **
- ****************************************************************************/
- #ifndef QXTNULL_H
- #define QXTNULL_H
- #include <qxtglobal.h>
- /*!
- \class QxtNull QxtNull
- \inmodule QxtCore
- \brief An object representing the "null" value for QxtNullable.
- \sa QxtNullable
- */
- struct QXT_CORE_EXPORT QxtNull
- {
- /*! integer cast operator
- * In expressions, QxtNull behaves as an integer zero for compatibility with generic functions.
- */
- operator int() const
- {
- return 0;
- }
- enum { isNull = true };
- };
- #ifndef QXT_NO_MACROS
- /*! \relates QxtNull
- * A convenience alias for QxtNull().
- */
- #define QXT_NULL QxtNull()
- #endif // QXT_NO_MACROS
- #endif // QXTNULL_H