FilePermission

检查更改过的文件备份，节省操作时间。 按Ctrl+Alt+F9弹出界面菜单。 显示备份状态和文件大小次数。 当目的地址是网络时，需要帐户和密码。 当正在备份时可以按停止键停止备份。 暂时只有增量备份 备份时间设定，格式可以是 00.00.00 或者 00:00:00。 进程优先算法选中后不影响其他程序工作(默认)。 点击确定保存设定开始计时。 自动启动并计时开始。-inspection changes to the document backup, saving hours of operation. Press Ctrl-Alt-F9 pop-up menu interface. Show backup status and the number of file size. When the destination address of the network, need to account and password. When the backup is at the stop button can stop by the backup. Incremental backup is only temporary backup sets the time, format or can be 00.00.00 00:00:00. Priority algorithm process after the elections does not affect other procedures (default). Click OK to preserve set the timer. Automatically activated and start time.

说明：  本代码演示了PDFLIB中的文本输出函数的使用.(demonstration of the code of PDFLIB text output function use.)

说明：  以图像处理和knn算法为基础，利用knn算法，在python开发环境中设计了一个手写数字识别系统，该系统采用28*28的模板对图新分成784块提取手写数字的784个特征，在二值图像数据基础上，通过朴素贝叶斯分类器算法，对0~9这十类手写数字进行学习和分类。(Based on image processing and KNN algorithm, a handwritten digit recognition system is designed in Python development environment by using KNN algorithm. The system uses 28*28 template to divide the graph into 784 blocks to extract 784 features of handwritten digits. On the basis of binary image data, it learns and classifies the ten types of handwritten digits, 0-9, through Naive Bayesian classifier algorithm.)

五种飞行轨迹，轨迹中包含各种飞行姿态，适合初学者。(Five Kinds of Flight Trajectories)

说明：  基于vc6环境下开发，实现了打开文件操作，利用了fltk图形开发包(based vc6 environment in development and operation of open files using a graphical development kit fltk)

在Windows平台下实现网络封包过滤的一种方法-the Windows platform network packet filtering method

RTCSample is a fully functional RTC application the uses the RTC Client API to expose Presence, Instant Messaging, and PC-to-PC audio/video call features.

利用ie cache 和 http 协议开发下载程序的例子，适用于简单的网络下载。-use ie cache and development agreement http download the examples, applicable to simple networks to download.

袖珍文件分割器，VC++经典编程源码，很好的参考资料。(Pocket file splitter, VC++ classic programming source code, a good reference.)

C#编程开发，大地测量学，利用egm96数据计算全球高程异常，并输出垂线偏差计算结果与高程异常计算计算结果。( C# programming development, geodesy, use the data to calculate the global egm96 height anomaly, and outputs the vertical deviation calculation results with the height anomaly calculation results.)