54 lines
1.9 KiB
Text
54 lines
1.9 KiB
Text
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef __com_sun_star_beans_Optional_idl__
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#define __com_sun_star_beans_Optional_idl__
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module com { module sun { module star { module beans {
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/**
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An optional value of a given type.
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<p>This structure is used as the type of interface attributes corresponding
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to instances of <type scopye="com::sun::star::beans">Property</type> that
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have the <const
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scope="com::sun::star::beans">PropertyAttribute::MAYBEVOID</const>. It might
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also be useful in other situations, for example as the return type of an
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interface method.</p>
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*/
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struct Optional<T> {
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/**
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Marks this structure instance as having an actual value.
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*/
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boolean IsPresent;
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/**
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The actual value of this structure instance.
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<p>If no actual value is present, a producer of such a structure instance
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should leave this member defaulted, and a consumer of such a structure
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instance should ignore the specific value stored in this member.</p>
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*/
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T Value;
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};
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}; }; }; };
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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