QT 串口程序

red ball tracking algorithm using opencv library in Qt

Qt 键盘程序，经测试通过，代码结构简单清晰！(Qt keyboard program, code simple and clear!)

使用QT中tableWidget控件读取地铁数据并显示，可修改文件内容

Qt，和 wxWidget 一样，它也是一个标准的 C++库。但是它的语法很类似于 Java 的 Swing，十分清晰，而 且 SIGNAL/SLOT 机制使得程序看起来很明白——这也是我首先选 择 Qt 的一个很重要的方面，因为我是学 Java 出身的 :) 。不过，所谓“成也萧何，败也萧 何”，这种机制虽然很清楚，但是它所带来的后果是你需要使用 Qt 的 qmake 对程序进行预 处理，才能够再使用 make 或者 nmake 进行编译。并且它的界面也不是原生风格的，尽管 Qt 使用 style 机制十分巧妙的模拟了本地界面。另外值得一提的是，Qt 不仅仅运行在桌面环境 中，Qt 已经被 Nokia 收购，它现在已经会成为 Symbian 系列的主要界面技术——Qt 是能够 运行于嵌入式平台的。(Qt, and wxWidget, it is also a standard C++ library. But its syntax is very similar to Java' s Swing, very clear, and SIGNAL/SLOT mechanism makes the program seem to understand- and this is my first choice is a very important aspect of Qt, because I was born to learn Java :). However, the so-called " as also Xiao, also lost" , although this mechanism is clear, but its consequences is that you need to use Qt' s qmake program is preprocessed, it can be reused make or nmake to compile. And its interface is not the native style, despite the use of Qt style very clever mechanism to simulate the local interface. Also worth mentioning is that, Qt only run in the desktop environment, Qt has been acquired by Nokia, it has now become the main interface technology Qt Symbian series is the ability to run on embedded platforms.)

【实例简介】本网吧管理系统实现了登陆、注册、人员信息的添加、修改，上网记录的查询等，界面美化，适合中小型网吧管理。本次项目是基于qt与sqlite制作完成。

一个QT做的雷达覆盖范围三维显示程序。用到了openGL+QT.供大家学习。(QT made a three-dimensional radar coverage display program. Uses openGL+ QT. For everybody to learn.)

QT一个虚拟键盘的实例代码，需运行在linux环境下。(QT, an instance of a virtual keyboard code, need to run under the Linux environment. )

unit commitment problem

说明：  QWT是一个QT的第三方库，可以用其来开发各种图形 表格文件。这是最新的版本，加入了新的控件。可以直接在QTDESIGNER里面调用。(The Qwt library contains GUI Components and utility classes which are primarily useful for programs with a technical background. Beside a 2D plot widget it provides scales, sliders, dials, compasses, thermometers, wheels and knobs to control or display values, arrays, or ranges of type double. )

很好介绍了QT4.3库的使用，帮助初学者能够很快入门QT，进入QT世界(Good use of the library introduced QT4.3 help beginners can quickly entry QT, QT into the world)