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说明：  使用Openmp的分别用1、2、3、4核计算π值，对比四核所用时间的关系，同时检测四核是否能工作(Openmp is used to calculate the relationship between 1 cores, 2, 3 and 4 cores, respectively, to compare the relationship between the four cores' time and check whether the four cores work.)

基于单文档，分割windows窗口，设置分割的形式(Based on a single document, split windows windows)

同步机制的解决方法之一(one of the solutions)

用boost::shared_ptr实现command模式，并提供MacroCommand来支持复合的command。(command pattern)

显示多行文字的工具栏，VC++经典编程源码，很好的参考资料。(Display multiple lines of text toolbar, VC++ classic programming source code, a good reference.)

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这个程序输出正弦和余弦波形 使用DAC硬这C8051F060单片机DAC0波形输出　和DAC1　　Timer4中断更新的输出DAC.Timer4 ISR的　　然后导致了DACs计算的输出,这是下一个中断。　输出波形的频率设定的# define <频率>。　　实现定义的精确输出频率<频率>,一个　　/使用外部晶体。(This program outputs sine and cosine waveforms using the hardware DACs // on the C8051F06x microcontroller. The waveforms are output on pins DAC0 // and DAC1. // // The output of the DAC is updated upon a Timer4 interrupt. The Timer4 ISR // then calculates the output of the DACs for the next interrupt. // // The frequency of the output waveforms is set by the#define <FREQUENCY>. // To achieve the exact output frequency defined by <FREQUENCY>, an // external crystal should be used.)

详细解析MALLOC/free；New/delete内部实现机制，以及实现。(Detailed analysis MALLOC/free New/delete internal implementation mechanisms, and implementation.)

说明：  MFC数据库编程MFC数据库编程MFC数据库编程(MFC Database Programming MFC Database Programming MFC Database Programming)