一个播放音乐的例子，端口函数全部用的中断函数。

Visual C++实现的快速关机程序，关机非常方便快捷-Visual C++ Realize rapid shutdown process, shutdown is very convenient and quick

获取系统信息(获取硬盘的出厂的系列号,厂家,出厂日期)

一个系统用户管理api使用的例子--The example of the api usage of system user management

VC2005下利用ATLServer创建的webservice服务。备注：为了可以顺利完成Web 服务的创建，应当做好准备工作。不仅要保证操作系统为Windows NT 4.x或Windows 2000，而且要保证IIS被妥善安装。-VC2005 using ATLServer created webservice service. Note: in order to be successful completion of the creation of Web services, it should be well prepared. Not only to ensure that the operating system for Windows NT 4.x or Windows 2000, but also to ensure that IIS was properly installed.

对有权限控制的设备进行存取的例子for NT- To has the equipment which the jurisdiction controls to carry on the deposit and withdrawal example for NT

使用标准api实现得到windows密码-use standard api realization windows Password

中文字库扫描码的提取-Chinese font code scanning Extraction

系统功能：  上班时间的设定。上下班时间相对固定，可保存在客户端的设置文件中  员工出入单位的情况记录。出入情况主要由考勤机来记录，但是需要设置人工添加的功能，已备特殊情况的处理  请假、加班和出差情况的记录  每个月底进行整个月的出勤情况统计-System function:

在很多实用的程序里都要求用到一些系统的参数，准确了解系统参数，你的程序将会更COOL！-in many practical procedures and have asked to see some system parameters and accurate understanding of the system parameters, your program will be more COOL!

DDK开发协议驱动程序编程内容，如果想了解或提高ddk开发能力的。-DDK development agreement driven programming content, if they want to know or improve the capacity of each development.