qt-everywhere-src-5.14.1/qtvirtualkeyboard/src/virtualkeyboard/qvirtualkeyboard_staticplugin_p.h

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#ifndef QVIRTUALKEYBOARD_STATICPLUGIN_P_H
#define QVIRTUALKEYBOARD_STATICPLUGIN_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#if defined(QT_STATICPLUGIN)
#include <QtPlugin>
#include <QPluginLoader>

QT_BEGIN_NAMESPACE

// This macro is similar to Q_IMPORT_PLUGIN, except it does not
// register duplicate entries as static plugins.
// The check is required since the application may already have
// initialized the plugin by its own dependencies.
#define Q_VKB_IMPORT_PLUGIN(PLUGIN) \
        extern const QT_PREPEND_NAMESPACE(QStaticPlugin) qt_static_plugin_##PLUGIN(); \
        class Static##PLUGIN##PluginInstance{ \
        public: \
                Static##PLUGIN##PluginInstance() { \
                    if (!QPluginLoader::staticInstances().contains(qt_static_plugin_##PLUGIN().instance())) \
                        qRegisterStaticPluginFunction(qt_static_plugin_##PLUGIN()); \
                } \
        }; \
       static Static##PLUGIN##PluginInstance static##PLUGIN##Instance;

QT_END_NAMESPACE

#endif

#endif // QVIRTUALKEYBOARD_STATICPLUGIN_P_H