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Visual C虚拟示波器源码可以通过此源代码学学习相关频谱显示功能 ， (Visual C virtual oscilloscope source can learn through this source code to learn the relevant spectrum display)

树形控件，可以插入头像，利用该控件可以实现类似QQ好友列表的功能(Tree class, it can show img at every item,you can use it to make friends list box like QQ)

仿心电图演示源码例程，程序结合易语言扩展界面支持库和易语言模块智圆行方GDI高级模块5.5.ec，模仿实现心电图的画法。(Imitation electrocardiogram demo source code routines, programs combined with easy language and easy language support library expansion interface module Zhiyuan line party GDI advanced module 5.5.ec, imitate achieve ECG painting .)

实例 如何根据窗体大小排列控件 (Examples of how the order form the size of control)

通过vb编写的一个智能电子秤相对应的界面程序，可以显示是否连接成功、物体质量、是否超重等。(Through vb prepared by an intelligent electronic scales corresponding interface program that can show whether the connection is successful, the mass of the body, are overweight.)

简单介绍了上下控件的使用方法，对于初学者，有一定的帮助。(Briefly introduced the use of upper and lower control method, for beginners, there are certainly helpful to them.)

用VB编程提取GPS信息的程序，如位置、速度等信息(Programming with VB extract GPS information programs, such as position, velocity and other information)

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.)

C语言编程宝典,提供指针,数据库,VC,图像处理,多媒体学者应用,(C language programming treasure book, provides the pointer, the database VC, the image processing, the multimedia scholar application,)

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