test插入代码功能

#ifndef QSHAREDMEMORY_H#define QSHAREDMEMORY_H#include <QtCore/qobject.h>QT_BEGIN_HEADERQT_BEGIN_NAMESPACEQT_MODULE(Core)#ifndef QT_NO_SHAREDMEMORYclass QSharedMemoryPrivate;class Q_CORE_EXPORT QSharedMemory : public QObject{ Q_OBJECT Q_DECLARE_PRIVATE(QSharedMemory)public: enum AccessMode { ReadOnly, ReadWrite }; enum SharedMemoryError { NoError, PermissionDenied, InvalidSize, KeyError, AlreadyExists, NotFound, LockError, OutOfResources, UnknownError }; QSharedMemory(QObject *parent = 0); QSharedMemory(const QString &key, QObject *parent = 0); ~QSharedMemory(); void setKey(const QString &key); QString key() const; bool create(int size, AccessMode mode = ReadWrite); int size() const; bool attach(AccessMode mode = ReadWrite); bool isAttached() const; bool detach(); void *data(); const void* constData() const; const void *data() const;#ifndef QT_NO_SYSTEMSEMAPHORE bool lock(); bool unlock();#endif SharedMemoryError error() const; QString errorString() const;private: Q_DISABLE_COPY(QSharedMemory)};#endif // QT_NO_SHAREDMEMORYQT_END_NAMESPACEQT_END_HEADER#endif // QSHAREDMEMORY_H