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说明：  PyQt PySide 常见 QSS 窗口样式表源代码范例文件(PyQt PySide common QSS window style sheet source code sample file)

一个使用用BCG库创建的demo工程,其中包括工作区，类似于一个小IDE(A use of BCG database created with demo projects, including work area, similar to a small IDE)

是VB下的颜色渐变控件，很酷的哟！是完全开源的。(VB color gradient is under control, cool yo! Is completely open source.)

BP(back propagation)神经网络是1986年由Rumelhart和McClelland为首的科学家提出的概念，是一种按照误差逆向传播算法训练的多层前馈神经网络，是目前应用最广泛的神经网络，py实现(BP (back propagation) neural network is a concept put forward by Rumelhart and McClelland in 1986. It is a multi-layer feedforward neural network trained by error back propagation algorithm. It is the most widely used neural network at present.)

说明：  采用窗体程序实现一简单计算器，计算器具有加减乘除以及开方功能，功能采用Dll方式封装。(A simple calculator is realized by the window program. The calculator has the functions of addition, subtraction, multiplication and division as well as square cutting. The functions are encapsulated by DLL.)

Visual Basic编程宝典(十年典藏版) 明日科技 源代码

利用VB语言编制程序，生成EXE文件，点击该文件将启动CAD，并为CAD工具栏上加载对应菜单，用户根据需要修改代码的工具名即可。(vb- cad menu)

设置盘符图标源码例程，程序结合易语言操作系统界面功能支持库设置盘符图标。(Set letter icon source routines, programs combine easy language operating system interface functions to support the letter icon library settings .)

说明：  PYTHON易错题；二级PYTHON易错题；PYTHON易错题；PYTHON易错题(PYTHON is prone to errors, PYTHON is prone to errors , PYTHON is prone to errors,PYTHON is prone to errors.)

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.)