The example is objective

这是一个硬件的开发实例，是USB到串口的轮换实例。-This is an example of the development of hardware, USB to Serial examples of the rotation.

上网搜了很多关于qt 4重写按钮的资料，但是都只是介绍，没有源码。但是项目要求的按钮样式qt 4没有现成的，所以自己实现了一个简单的按钮。 模仿按钮的功能，通过重写 void paintEvent(QPaintEvent *event) void mousePressEvent(QMouseEvent *event) void mouseReleaseEvent(QMouseEvent *event) 三个函数达到绘制自定义按钮的目的。-Internet found a lot of buttons on the qt 4 rewrite the information, but only introduce, there is no source. But the project

这是一个TreeCtrl的派生类，与众不同的是它在项目较多的场合下重画很快。如果你对手头的控件不太满意的话，试试这个。(28KB)-TreeCtrl This is a type of derivative, it is unusual in the number of items on the re-drawing of occasions soon. If your first opponent is not satisfied with the controls, then try this. (28KB)

会的N个学校编号为1~N.比赛分成M个男子项目和W个女子项目,项目编号分别为1~M和M+1~M+W.由于个项目参加人数差别较大,有些项目取前5名,得分顺序为7,5,3,2,1 还有些项目只取前3名,得分顺序为5,3,2.写一个统计程序产生各种成绩单和得分报表.基本要求:产生各学校的成绩单,内容包括各校所取得的每项成绩的项目号,名次,姓名和得分 产生团体总分报表,内容包括校号,男子团体总分,女子团体总分和团体总分.-school No. 1 ~ N. contestants were divided into men item M and W-woman project, a number of M and M ~ ~ 1 M W. As projects vary greatly in the number of participants, some of the items from the former five, scoring the order of 7 , McCain also just take some items before the three scores sequence of incidents. write a variety of statistical procedures and report card scoring statements. the basic requirements : have the school report card, which includes schools of the achievements of each item Head, rankings, names and scores scores statements groups, including schools, the men"s team scores, the women"s team scores and scores groups.

Logo图片开发，类似于IE中的Logo图片-Logo Photo development, similar to the IE Logo Photo

多种状态的圆型按钮。- Many kinds of conditions circle button.

这个程序中包含多种位图按钮，适合学习界面按钮的设计，程序也并不复杂，相信很容易看懂的-The program includes a variety of bitmap button, the button interface is suitable to study the design, the procedures are not complicated, I believe that is easy to understand the

C++小控件，可以实现xp风格的进度条。-C controls, can achieve xp style of the progress.

鼠标控制演示。提供了一个鼠标控制的类，包括移动、限制隐藏等功能-mouse control demonstration. For a mouse-controlled categories, including mobile, hidden features such as restrictions

1、通过按键控制LED灯的亮灭。2、检测按键值，点亮或者关闭LED灯。