qpluginloader.h

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00001 /****************************************************************************
00002 **
00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
00004 ** All rights reserved.
00005 ** Contact: Nokia Corporation (qt-info@nokia.com)
00006 **
00007 ** This file is part of the QtCore module of the Qt Toolkit.
00008 **
00009 ** $QT_BEGIN_LICENSE:LGPL$
00010 ** Commercial Usage
00011 ** Licensees holding valid Qt Commercial licenses may use this file in
00012 ** accordance with the Qt Commercial License Agreement provided with the
00013 ** Software or, alternatively, in accordance with the terms contained in
00014 ** a written agreement between you and Nokia.
00015 **
00016 ** GNU Lesser General Public License Usage
00017 ** Alternatively, this file may be used under the terms of the GNU Lesser
00018 ** General Public License version 2.1 as published by the Free Software
00019 ** Foundation and appearing in the file LICENSE.LGPL included in the
00020 ** packaging of this file.  Please review the following information to
00021 ** ensure the GNU Lesser General Public License version 2.1 requirements
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00026 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this module.
00027 **
00028 ** GNU General Public License Usage
00029 ** Alternatively, this file may be used under the terms of the GNU
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00040 ****************************************************************************/
00041 
00042 #ifndef QPLUGINLOADER_H
00043 #define QPLUGINLOADER_H
00044 
00045 #include <QtCore/qlibrary.h>
00046 
00047 #if defined(QT_NO_LIBRARY) && defined(Q_OS_WIN)
00048 #undef QT_NO_LIBRARY
00049 #pragma message("QT_NO_LIBRARY is not supported on Windows")
00050 #endif
00051 
00052 #ifndef QT_NO_LIBRARY
00053 
00054 QT_BEGIN_HEADER
00055 
00056 QT_BEGIN_NAMESPACE
00057 
00058 QT_MODULE(Core)
00059 
00060 class QLibraryPrivate;
00061 
00062 class Q_CORE_EXPORT QPluginLoader : public QObject
00063 {
00064     Q_OBJECT
00065     Q_PROPERTY(QString fileName READ fileName WRITE setFileName)
00066     Q_PROPERTY(QLibrary::LoadHints loadHints READ loadHints WRITE setLoadHints)
00067 public:
00068     explicit QPluginLoader(QObject *parent = 0);
00069     explicit QPluginLoader(const QString &fileName, QObject *parent = 0);
00070     ~QPluginLoader();
00071 
00072     QObject *instance();
00073 
00074     static QObjectList staticInstances();
00075 
00076     bool load();
00077     bool unload();
00078     bool isLoaded() const;
00079 
00080     void setFileName(const QString &fileName);
00081     QString fileName() const;
00082 
00083     QString errorString() const;
00084 
00085     void setLoadHints(QLibrary::LoadHints loadHints);
00086     QLibrary::LoadHints loadHints() const;
00087 
00088 private:
00089     QLibraryPrivate *d;
00090     bool did_load;
00091     Q_DISABLE_COPY(QPluginLoader)
00092 };
00093 
00094 QT_END_NAMESPACE
00095 
00096 QT_END_HEADER
00097 
00098 #endif // QT_NO_LIBRARY
00099 
00100 #endif //QPLUGINLOADER_H