Pick.Business

VC++ 禁止运行程序的多个实例，程序根据主窗口类名和主窗口名判断是否已经有实例存在，如果存在就将其激活，并显示出来，如果是最小化的就还原窗口；如果有实例存在，则返回False并退出。 (VC++ prohibits running the program multiple instances of the program under the main window class name and the main window name to determine whether there are examples exist, if it will activate and show, if it is minimized to restore the window if examples exist, Returns False and exit.)

例子代码：获取Windows系统信息（各种版本信息、平台、状态等等）V1.0(Example code: Get Windows system information (information about the various versions, platforms, status, etc.) V1.0)

C++实现的读写注册表的功能，可以直接读取某个键的值，设定某个键的值和删除某个键的值，非常方便。(Read and write C++ implementation of the registry function, you can directly read the value of a key, set the value of a key to delete a key value, very convenient.)

通过内存映射对象实现程序和进程间的内存共享。(Implement programs and memory sharing between processes through a memory-mapped object.)

输入要查的内容，批量查找百度搜索的工具，简单实用的小工具(Input to check the contents of the batch search Baidu search tool, simple and practical gadgets)

G729a library audio coding, coding PCM for g729a, compressible 16 times

可以实现对数据层的操作，对数据业务逻辑进行处理(The operation of the data layer, business logic on the data processing)

说明：  

vc调用DLL，获取其导出的全局变量值UseExternVarDll的源码(vc call DLL, access to export global variable value UseExternVarDll source)

VC具有高效率的优点,通过com接口将VC和matlab进行连接(VC has the advantages of high efficiency, through the com interface will connect VC and matlab)