Move rtaudio, alsa-playback and qxt into thirdparty/.

thirdparty/qxt/qxtweb-standalone/qxtweb/qxtnull.h

@@ -0,0 +1,62 @@
+/****************************************************************************
+ **
+ ** 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