MTGCCombobox

基于C51的电子琴设计，有一个现成的音乐，支持14个不同的音调(C51-based design of the organ, there is a ready-made music, support the 14 different pitch)

在框架中获得当前文档指针，VC++精选编程学习源码，很好的参考资料。(Get the current document pointer in the framework, VC++ select learning programming source code, a good reference.)

由于传统的 COM 技术使用静态的非托管编程,net使用动态的托管编程(Because of the traditional COM technology using static unmanaged programming,.net using dynamic managed programming)

VB在treeview的节点处使用图形,有需要的下。(VB at the node in treeview using graphics, there is need for the next.)

windows 环境的 ADSL 拨号监控，由 C++ 语言实现。(ADSL dial-up monitoring windows environment, implemented by the C++ language.)

从数据库生成excel报表的vb子程序。数据库是sqlserver2000,报表预先用excel制作好，运行程序后报表中将自动填入数据并进入打印预览状态(From the database to generate excel report vb subroutine. Database is sqlserver2000, statements, pre-production with excel, and run the program will automatically fill in statements after the data and enter the Print Preview Status)

说明：  使用MFC对图元文件进行操作，包括保存图元文件，使得变换窗口的时候图像不消失(The use of MFC to operate metafile, including the preservation of metafile which transform the window does not disappear when the image)

孙鑫VC++教学课程lesson12：const char *与char * const的区别。C语言对文件读写的支持，FILE指针；文本文件和二进制文件的区别。用文本方式读写文件和以二进制方式读写文件的注意事项。C++对文件读写的支持，ofstream和ifstream的用法。Win32 SDK对文件读写的支持，CreateFile函数、WriteFile函数、ReadFile函数的使用；MFC对文件读写的支持，CFile类和CFileDialog的使用，文件过滤器的设置。win.ini文件和注册表的读写方式及相关知识点。 (Sun Xin VC++ tutorial lesson12: const char* char* const distinction. C language support for file read and write, the FILE pointer difference between text files and binary files. Way to read and write files with text and Note to the binary mode read and write files. The C++ support, ofstream and ifstream usage of file read and write. Win32 SDK file read and write support for the use of the CreateFile function, WriteFile function, ReadFile function the MFC file reading and writing support use CFile class and CFileDialog file filter settings. win.ini file and read and write registry and related knowledge points.)

MFC 程序设计 第二章源码这一章主要讲绘图，包含两个Project,一个是绘制表格，另一个是绘画直尺。(MFC Programming Chapter II of this chapter is about drawing source, consists of two Project, a table is drawn, the other is painting a ruler.)

利用DriverLINX Port IO Driver实现的计算机并口端口位输入输出测试程序。(DriverLINX Port IO Driver using computer parallel port to achieve digital input and output test procedure.)