有关vc的无闪烁刷平技术，介绍的东西非常有用-vc of the Brush- Flicker-free technology, the introduction of very useful things

创建memdc内存缓冲区，简明演示双缓冲方式实现无闪烁绘，功能很简单-Create memdc memory buffer, concise presentation double buffer to achieve flicker-free drawing, functionality is very simple