一个计时器的类，利用CPU内部的一个高分辨率计数器计数实现，可以用于各种精确计时的场合，尤其适合需要测试某段代码的运行时间的情况...

用visual c＋＋编写的模拟鼠标点击源码-Using visual c to prepare analog source mouse clicks

0-l背包问题是子集选取问题。一般情况下，0-1背包问题是NP难题。0-1背包 问题的解空间可用子集树表示。解0-1背包问题的回溯法与装载问题的回溯法十分类 似。在搜索解空间树时，只要其左儿子结点是一个可行结点，搜索就进入其左子树。当 右子树有可能包含最优解时才进入右子树搜索。否则将右子树剪去。设r是当前剩余 物品价值总和；cp是当前价值；bestp是当前最优价值。当cp+r≤bestp时，可剪去右 子树。计算右子树中解的上界的更好方法是将剩余物品依其单位重量价值排序，然后 依次装入物品，直至装不下时，再装入该物品的一部分而装满背包。由此得到的价值是 右子树中解的上界。-0-l knapsack problem is selected subset of the problem. Under normal circumstances, 0-1 knapsack problem is NP-hard. 0-1 knapsack problem the solution space available subset of the tree said. Xie 0-1 knapsack problem with the law retroactively loading the retroactive law very similar. The search solution space trees, as long as their son left node is a viable nodes, the search entered its left subtree. When the right subtree is the optimal solution may contain only son into the right tree search. It will cut right subtrees. Suppose that r is the total value of the remaining items; Cp is the current value; Bestp is currently the best value. When cp r bestp, they can cut right subtrees. Calculation right

应用MFC框架的计时器程序，可以放大缩小窗口，设置计时时间，到时提醒，提示音等；可以关联PPT，点击开始后倒计时，同时自动播放PPT，支持PowerPoint 2003。开发工具vs2013，工程可以直接打开，含可执行程序。

动态分区分配方式的模拟。理解内存分配的几种方式的基本原理，如：单一连续分配方式、固定分区分配方式和动态分区分配方式。通过编写程序实现动态分区分配方式，进一步理解动态分区分配方式中使用的数据结构和分配算法，加深对动态分区存储管理方式及其实现过程的理解。-Dynamic partitioning of the simulated distribution patterns. Understand the memory allocation of the basic principles of a number of ways, such as: a single continuous distribution method, fixed geographical distribution patterns and dynamics of geographical distribution. Through the preparation process to achieve dynamic partitioning modes of distribution, and further understanding of the dynamic partition allocation methods used in data structure and distribution of algorithms, understanding of dynamic partitioning storage management approach and its realization process of understanding.

NetChat 个人爱好，想尝试通过局域网对客户机进行控制操作。-NetChat personal hobbies, want to try through the LAN on the client to carry out control operations.

用 VB 做的 GPS 通讯程序，显示当前时钟。-do with VB GPS communication process, showing current clock.

tcp问题的解决,十五个城市-tcp solve the problem, 15 cities

Modbus Salave Protocol Activex

一个非常优秀的屏幕转换成AVI文件的程序-an excellent screen AVI file conversion process

Other button examples for wtl