qlibrary.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
00022 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
00023 **
00024 ** In addition, as a special exception, Nokia gives you certain additional
00025 ** rights.  These rights are described in the Nokia Qt LGPL Exception
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
00030 ** General Public License version 3.0 as published by the Free Software
00031 ** Foundation and appearing in the file LICENSE.GPL included in the
00032 ** packaging of this file.  Please review the following information to
00033 ** ensure the GNU General Public License version 3.0 requirements will be
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00036 ** If you have questions regarding the use of this file, please contact
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00038 ** $QT_END_LICENSE$
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00040 ****************************************************************************/
00041 
00042 #ifndef QLIBRARY_H
00043 #define QLIBRARY_H
00044 
00045 #include <QtCore/qobject.h>
00046 
00047 QT_BEGIN_HEADER
00048 
00049 QT_BEGIN_NAMESPACE
00050 
00051 QT_MODULE(Core)
00052 
00053 #if defined(QT_NO_LIBRARY) && defined(Q_OS_WIN)
00054 #undef QT_NO_LIBRARY
00055 #pragma message("QT_NO_LIBRARY is not supported on Windows")
00056 #endif
00057 
00058 #ifndef QT_NO_LIBRARY
00059 
00060 class QLibraryPrivate;
00061 
00062 class Q_CORE_EXPORT QLibrary : public QObject
00063 {
00064     Q_OBJECT
00065     Q_PROPERTY(QString fileName READ fileName WRITE setFileName)
00066     Q_PROPERTY(LoadHints loadHints READ loadHints WRITE setLoadHints)
00067     Q_FLAGS(LoadHint LoadHints)
00068 public:
00069     enum LoadHint {
00070         ResolveAllSymbolsHint = 0x01,
00071         ExportExternalSymbolsHint = 0x02,
00072         LoadArchiveMemberHint = 0x04
00073     };
00074     Q_DECLARE_FLAGS(LoadHints, LoadHint)
00075 
00076     explicit QLibrary(QObject *parent = 0);
00077     explicit QLibrary(const QString& fileName, QObject *parent = 0);
00078     explicit QLibrary(const QString& fileName, int verNum, QObject *parent = 0);
00079     explicit QLibrary(const QString& fileName, const QString &version, QObject *parent = 0);
00080     ~QLibrary();
00081 
00082     void *resolve(const char *symbol);
00083     static void *resolve(const QString &fileName, const char *symbol);
00084     static void *resolve(const QString &fileName, int verNum, const char *symbol);
00085     static void *resolve(const QString &fileName, const QString &version, const char *symbol);
00086 
00087     bool load();
00088     bool unload();
00089     bool isLoaded() const;
00090 
00091     static bool isLibrary(const QString &fileName);
00092 
00093     void setFileName(const QString &fileName);
00094     QString fileName() const;
00095 
00096     void setFileNameAndVersion(const QString &fileName, int verNum);
00097     void setFileNameAndVersion(const QString &fileName, const QString &version);
00098     QString errorString() const;
00099 
00100     void setLoadHints(LoadHints hints);
00101     LoadHints loadHints() const;
00102 #ifdef QT3_SUPPORT
00103     inline QT3_SUPPORT QString library() const { return fileName(); }
00104     inline QT3_SUPPORT void setAutoUnload( bool ) {}
00105 #endif
00106 private:
00107     QLibraryPrivate *d;
00108     bool did_load;
00109     Q_DISABLE_COPY(QLibrary)
00110 };
00111 
00112 Q_DECLARE_OPERATORS_FOR_FLAGS(QLibrary::LoadHints)
00113 
00114 #endif //QT_NO_LIBRARY
00115 
00116 QT_END_NAMESPACE
00117 
00118 QT_END_HEADER
00119 
00120 #endif //QLIBRARY_H