RenameHandler

implementation of grabcut

由于工程上需要定位系统瓶颈，故开发了七牛云接口并发测试程序，测试接口性能。该程序未公布我自己的SecretKey，使用者请填写自己的SecretKey。(This is a program for QiNiu interface test, you can do it for performacer test.)

这是一个基于C++ template的面向对象的RPC框架库。-Native like, synchronous remote method invocation. Light-weighted, clean and easy to use. Normal C++ syntax for service definition. 1. Supports all c++ native data type and user defined data type. 2. Reference and pointer support. 3. Polymorphism for method parameter and return type. Type safe. As the framework is based on c++ template, all type mismatch will be raised at compilation time. TCP/IP as underlying transportation protocol. Full conformance to ISO c++ standard. Unicode support.

实现了一个功能简单的HTTP代理服务器，本章主要介绍多线程编程相关的知识，包括初始化临界段和删除临界段，使用临界段完成多个线程对临界资源的互斥访问，创建工作线程，退出工作线程，定义和设定事件，利用事件完成多个线程的同步与协作等。-achieved a simple function of the HTTP proxy server, this chapter introduces multi-threaded programming related knowledge, including initialization of critical and delete critical of the use of the completion of a number of critical thread on the critical resources of the exclusive visit, work to create threads, threads from work, definitions and setting events using multiple threads completed the synchronization and collaboration.

generate sine wave. Inputs : Amplitude, phasein, frequency

云台控制的C++详细源码，二次开发可以直接用。(The PTZ control C++ detailed source, secondary development can be directly used.)

get获取网页源代码

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说明：  共享内存实验代码，该实验要求利用共享内存实现文件的打开和读写操作，基于linux平台。(Shared memory experimental code, the experiment requires the use of shared memory to achieve file opening and reading and writing operations, based on the Linux platform. )

说明：  qt中提供了QGphicsView，QGraphicsScene，QGraphicsItem，QGraphicsPixmapItem是QGraphicsItem的子类 分辨创建它们的实例：view，scene，item，然后通过各自的方法scene->addItem(item);view->setScene(scene);就可以达到类似下图的效果，想要进一步定制，则要继承QGraphicsItem或QGraphicsPixmapItem，然后重写paint()、boundingRect()等方法，此外如果还想要获取鼠标事件，重写mousePressEvent等事件就好了，注意，一旦重写了mousePressEvent方法，就以为了qt不会再自动处理item的任何press事件了，可以在你重写的mousePressEvent方法中最后添加QGraphicsItem::mousePressEvent(event);解决这个问题，就是说你获取到了鼠标事件，但是依然让qt处理这个鼠标事件。(QGphics View, QGraphics Scene, QGraphics Item and QGraphics PixmapItem are provided in qt. They are subclasses of QGraphics Item. Resolve the instances of creating them: view, scene, item, and then use their respective methods scene - > addItem (item); view - > setScene (scene); you can achieve the effect similar to the figure below. If you want to further customize, you need to inherit QGraphics Item or QGraphics Pixmap Item, and then rewrite paint (), boundingRect () and other methods, and if you want to do so. If you want to get mouse events, rewrite events like mousePressEvent. Note that once you rewrite the mousePressEvent method, you think that QT will no longer automatically handle any press events of item. You can finally add QGraphics Item:: mousePressEvent (event) to your rewritten mousePressEvent method to solve this problem. That is, you get the mouse event, but still let QT handle the mouse event.)