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29
30#ifndef QVIRTUALKEYBOARD_STATICPLUGIN_P_H
31#define QVIRTUALKEYBOARD_STATICPLUGIN_P_H
32
33//
34// W A R N I N G
35// -------------
36//
37// This file is not part of the Qt API. It exists purely as an
38// implementation detail. This header file may change from version to
39// version without notice, or even be removed.
40//
41// We mean it.
42//
43
44#if defined(QT_STATICPLUGIN)
45#include <QtPlugin>
46#include <QPluginLoader>
47
48QT_BEGIN_NAMESPACE
49
50// This macro is similar to Q_IMPORT_PLUGIN, except it does not
51// register duplicate entries as static plugins.
52// The check is required since the application may already have
53// initialized the plugin by its own dependencies.
54#define Q_VKB_IMPORT_PLUGIN(PLUGIN) \
55 extern const QT_PREPEND_NAMESPACE(QStaticPlugin) qt_static_plugin_##PLUGIN(); \
56 class Static##PLUGIN##PluginInstance{ \
57 public: \
58 Static##PLUGIN##PluginInstance() { \
59 if (!QPluginLoader::staticInstances().contains(qt_static_plugin_##PLUGIN().instance())) \
60 qRegisterStaticPluginFunction(qt_static_plugin_##PLUGIN()); \
61 } \
62 }; \
63 static Static##PLUGIN##PluginInstance static##PLUGIN##Instance;
64
65QT_END_NAMESPACE
66
67#endif
68
69#endif // QVIRTUALKEYBOARD_STATICPLUGIN_P_H
70

source code of qtvirtualkeyboard/src/virtualkeyboard/qvirtualkeyboard_staticplugin_p.h