4 - Qt WebKit Widgets - Qt WebKit Widgets module provides a web browser engine as well as C++ classes to render and interact with web content
5 - Qt3DCore - Qt3D Core module contains functionality to support near-realtime simulation systems
Qt3D::ArrayAllocatingPolicy - Allocates memory in a contiguous space trying to minimize fragmentation and cache misses
Qt3D::ListAllocatingPolicy - Allocates resources in a list
Qt3D::ObjectLevelLockingPolicy - Provides locking access to a resource through the use of a QReadWriteLock
Qt3D::QAbstractAspect - The base class for aspects that provide a vertical slice of behavior
Qt3D::QChangeArbiter - Acts as a message router between observables and observers
Qt3D::QCircularBuffer - A template class providing a dynamic circular array
Qt3D::QCircularBuffer::const_iterator - Qt3D::QCircularBuffer::const_iterator class provides an STL-style const iterator for QCircularBuffer
Qt3D::QCircularBuffer::iterator - Qt3D::QCircularBuffer::iterator class provides an STL-style non-const iterator for QCircularBuffer
Qt3D::QComponent - Base class of scene nodes that can be aggregated by Qt3D::QEntity instances as a component
Qt3D::QEntity - Qt3D::QEntity is a Qt3D::QNode subclass that can aggregate several Qt3D::QComponent instances that will specify its behavior
Qt3D::QFrameAllocator - Provides a pool of memory chunks to be used to allocate objects on a per frame basis
Qt3D::QNode - Qt3D::QNode is the base class of all Qt3D node classes used to build a Qt3D scene
Qt3D::QOpenGLInformationService - Interface for a Qt3D OpenGL information service
Qt3D::QResourceManager - Allocates memory for resources that can be referenced by a QHandle
Qt3D::QServiceLocator - Service locator used by aspects to retrieve pointers to concrete service objects
Qt3D::QSystemInformationService - Interface for a Qt3D system information service
QT学习-核心类列表-4、Qt WebKit Widgets 5、Qt3DCore
原文：http://www.cnblogs.com/stycpp-2016/p/6382127.html