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MFC做的通讯录，利用ODBC连接access数据库，能够对数据进行写入、读出和修改。适合初学者参考。[注：需要自己配置数据源，也可以不配置，运行程序两次就行，第一次相当于是配置](MFC to do the book, using ODBC to connect access database, the data can be written to, read and modify. Suitable for beginners reference.)

这是根据sniffer用vc++做的一个sniffer小程序，仅供参考。(This is in accordance with sniffer with vc++ Make a sniffer applet, for informational purposes only.)

说明：  VC++ 6.0 MFC for Stock

用MFC实现用表格控件对数据进行显示和修正处理(MFC with tabular data display controls and correction process)

文件异步下载程序vb示例(document asynchronous sample download vb)

vb 饼状图和柱状图，这里是一个demo，并含有注释，方便新手学习(vb,circle chart and point chart)

显示和修改网卡地址和网关.DNS Visual Basic编程.(Display and modify the network card address and gateway. DNS Visual Basic programming.)

这是用VB编辑的点对点通讯工具,只要双方拥有IP地址,就可以连接通讯.可以用于Internet,局域网等网络中.()

好多opencv的应用程序界面中在MFC中显示图像，但是我发现这些显示功能大部分用到了一个叫CvvImage的类，最近使用opencv2.3.1，发现找不到这个类了。 没有具体研究过opencv ,但是opencv在MFC中显示图像需要用的一个叫做CvvImage的类的DrawToHDC()的函数，但是我在2.3.1下却怎么也没有找到这个类，和这个函数。在2.3.1的文档下没有关于这个的任何资料，不知道是不是新版本的opencv去掉了这个类，或者用其他的方式实现了。所以我需要用以前的方式实现这个类。在网上找了一些资料。发现这个问题可以这样处理。 我们可以自己建立一个CvvImage.h和一个CvvImage.cpp的文件，添加到工程中。这样我们在工程中包含上这个CvvImage.h的头文件，就可以正常的按照以前的方式使用CvvImage类将图像绘制到MFC控件中了(Many opencv application interface in the MFC display images, but I found that most of these display features used in a class called CvvImage, the recent use of opencv2.3.1, found that the class can not find. There is no specific study of the opencv, but opencv in the MFC to display the image needs to be used in a class called DrawToHDC () function, but I did not find the kind of 2.3.1 under the CvvImage, and this function. There is no information about this in the 2.3.1 document, and it is not known whether the new version of OpenCV has removed this class, or has been implemented in other ways. So I need to use the old way of this class. On the Internet for some information. Found the problem can be handled in this way. We can create a CvvImage.h and a CvvImage.cpp file, added to the project. So we in the project includes the CvvImage.h header file, you can normally use the CvvImage class in accordance with the previous way draws the image to the MFC control.)

可以快速计算文件的CRC32校验值，主要用于bin和hex、rom文件的校验。(It can quickly calculate the CRC32 check value of files, mainly used for the check of bin, hex and ROM files.)