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说明：  VC实现的曲线图形显示库，很适合作历史曲线显示。需要做历史曲线对比的可以参考下哈。(VC graphics library to achieve the curve, it is suitable for the historical curve display. History needs to be done under the curve of contrast can refer to Kazakhstan.)

可根据时间自动对指定的文件备份到指定的位置。(According to the time automatically to the specified file backup to the specified location.)

对EXCEL的读写操作，可以帮助学习如何通过VC++读写EXCEL(help to learn how to access EXCEL files with VC++)

利用C++中CreatePolygonRgn,CreateRoundRectRgn,CreateRoundRectRgn,()

一个遍历文件夹中文件的例子，已经在源码上做了修改，方便调用！(traverse a document folder example, the source code has been revised to facilitate the call!)

将空气质量指数转化为污染物浓度（二氧化硫，二氧化氮和颗粒物浓度）的小程序(convert API to concentration)

使用CArchive类对文件进行操作。对VC操作会更熟悉。(CArchive Class used to operate on the document. On the VC will be more familiar with the operation.)

简单的打字程序在VB下运行可执行性朝好,书牍可以自己调()

只许要把文件放到文件夹为“III”的同一目录，运行将可以文件夹加密(only the documents should put to the folder "III" in the same directory, will be running folder encryption)

用vb做的一个能显示wave文件的波形，适合于初学者(Done with vb a wave file can display the waveform, suitable for beginners)