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有关文件操作的源码，很有使用价值(source code about the file operation, very valuable)

VC++ MFC文件拷贝显示进度条，选择需要复制的文件、选择需要复制到的路径，开始复制文件时即可显示进度条，进度条上显示有数字百分比，适时显示复制进度。(VC++ MFC file copy shows the progress bar, select files to be copied, the choice of paths need to be copied to the beginning, copying a file to display a progress bar, progress bar displayed on a digital display percentage, the replication schedule timely.)

Qt4数据库应用-东软培训资料，对初学者很有用。这是第四部分。(Qt4 database applications- Neusoft training materials, useful for beginners. This is the fourth part.)

提取并保存应用程序图标。本代码实现了从其他应用程序中提取其应用程序图标的功能！(Extract and save the application icon. The code from other applications to extract the application icon of its features!)

a observer pattern desing example in c++ a basic class room one

用C#開發的YouTube Downloader,只要貼上YouTube URL,就可以把Download YouTube影片(C# development of YouTube Downloader, as long as the paste YouTube URL, you can put Download YouTube Videos)

在linux环境下编写一个控制台应用程序，程序中有一个共享的整型变量shared_var，初始值为0；创建一个线程并使其立即与主线程并发执行。新创建的线程与主线程均不断地循环，并输出shared_var 的值。主线程在循环中不断地对shared_var 进行加1操作，即每次循环shared_var 被加1；而新创建的线程则不断地对shared_var 进行减1 操作，即每次循环shared_var 被减1。观察程序运行的结果，并对你看到的现象进行解释。(Written in the linux environment a console application, the program has a shared integer variable shared_var, the initial value of 0 create A thread and make it run concurrently with the main thread immediately. The newly created thread and main thread are constantly circulating, and the output shared_var Value. The main thread in a loop constantly on shared_var are incremented, that is plus 1 for each cycle shared_var and the new line created Process is constantly on the shared_var decremented, that is, each cycle shared_var is decreased by 1. Observe the results of running the program, and you To explain the phenomenon seen.)

水晶报表VC实例，实例主要实现了水晶报表的按组字段分类，按字段排序，以及检索功能(CrystalReports)

说明：  控制云台的上下左右转动，从而实现对摄像头左右上下的控制(PTZ control up and down turning left and right in order to achieve control of the camera up and down about)

C source code for neteq test