Add Qt libs and headers

paho-mqtt3as-proxy/Qt/include/QtCore/qpluginloader.h

@@ -0,0 +1,67 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#ifndef QPLUGINLOADER_H
+#define QPLUGINLOADER_H
+
+#include <QtCore/qglobal.h>
+#if QT_CONFIG(library)
+#include <QtCore/qlibrary.h>
+#endif
+#include <QtCore/qplugin.h>
+
+QT_BEGIN_NAMESPACE
+
+#if QT_CONFIG(library)
+
+class QLibraryPrivate;
+class QJsonObject;
+
+class Q_CORE_EXPORT QPluginLoader : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(QString fileName READ fileName WRITE setFileName)
+    Q_PROPERTY(QLibrary::LoadHints loadHints READ loadHints WRITE setLoadHints)
+public:
+    explicit QPluginLoader(QObject *parent = nullptr);
+    explicit QPluginLoader(const QString &fileName, QObject *parent = nullptr);
+    ~QPluginLoader();
+
+    QObject *instance();
+    QJsonObject metaData() const;
+
+    static QObjectList staticInstances();
+    static QList<QStaticPlugin> staticPlugins();
+
+    bool load();
+    bool unload();
+    bool isLoaded() const;
+
+    void setFileName(const QString &fileName);
+    QString fileName() const;
+
+    QString errorString() const;
+
+    void setLoadHints(QLibrary::LoadHints loadHints);
+    QLibrary::LoadHints loadHints() const;
+
+private:
+    QLibraryPrivate *d;
+    bool did_load;
+    Q_DISABLE_COPY(QPluginLoader)
+};
+
+#else
+
+class Q_CORE_EXPORT QPluginLoader
+{
+public:
+    static QObjectList staticInstances();
+    static QList<QStaticPlugin> staticPlugins();
+};
+
+#endif // QT_CONFIG(library)
+
+QT_END_NAMESPACE
+
+#endif // QPLUGINLOADER_H